diff options
author | Marek Olšák <[email protected]> | 2020-01-10 21:19:46 -0500 |
---|---|---|
committer | Marek Olšák <[email protected]> | 2020-01-14 18:46:07 -0500 |
commit | 8832a884345686e6a8b2c0c8aa7515ad3f775b9e (patch) | |
tree | e8f6e9166fa8af49b773232d0fec21b64b52ad52 /src/gallium | |
parent | 9b60b3ce93886e1d6b38d4f53b71ada4596c5e4f (diff) |
radeonsi: move PS LLVM code into si_shader_llvm_ps.c
This is an attempt to clean up si_shader.c.
v2: don't move code that is not specific to LLVM
Reviewed-by: Timothy Arceri <[email protected]> (v1)
Diffstat (limited to 'src/gallium')
-rw-r--r-- | src/gallium/drivers/radeonsi/Makefile.sources | 1 | ||||
-rw-r--r-- | src/gallium/drivers/radeonsi/meson.build | 1 | ||||
-rw-r--r-- | src/gallium/drivers/radeonsi/si_shader.c | 1392 | ||||
-rw-r--r-- | src/gallium/drivers/radeonsi/si_shader_internal.h | 37 | ||||
-rw-r--r-- | src/gallium/drivers/radeonsi/si_shader_llvm_build.c | 76 | ||||
-rw-r--r-- | src/gallium/drivers/radeonsi/si_shader_llvm_ps.c | 1061 | ||||
-rw-r--r-- | src/gallium/drivers/radeonsi/si_shader_nir.c | 32 |
7 files changed, 1317 insertions, 1283 deletions
diff --git a/src/gallium/drivers/radeonsi/Makefile.sources b/src/gallium/drivers/radeonsi/Makefile.sources index 5d658b744d0..2b4acc9fbf5 100644 --- a/src/gallium/drivers/radeonsi/Makefile.sources +++ b/src/gallium/drivers/radeonsi/Makefile.sources @@ -37,6 +37,7 @@ C_SOURCES := \ si_shader_internal.h \ si_shader_llvm.c \ si_shader_llvm_build.c \ + si_shader_llvm_ps.c \ si_shader_nir.c \ si_shaderlib_tgsi.c \ si_state.c \ diff --git a/src/gallium/drivers/radeonsi/meson.build b/src/gallium/drivers/radeonsi/meson.build index a0bd10f6ac9..b349cf5c6d4 100644 --- a/src/gallium/drivers/radeonsi/meson.build +++ b/src/gallium/drivers/radeonsi/meson.build @@ -52,6 +52,7 @@ files_libradeonsi = files( 'si_shader_internal.h', 'si_shader_llvm.c', 'si_shader_llvm_build.c', + 'si_shader_llvm_ps.c', 'si_shader_nir.c', 'si_shaderlib_tgsi.c', 'si_state.c', diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index e68bd038845..aff52250bd3 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -53,18 +53,9 @@ static void si_build_vs_prolog_function(struct si_shader_context *ctx, union si_shader_part_key *key); static void si_build_tcs_epilog_function(struct si_shader_context *ctx, union si_shader_part_key *key); -static void si_build_ps_prolog_function(struct si_shader_context *ctx, - union si_shader_part_key *key); -static void si_build_ps_epilog_function(struct si_shader_context *ctx, - union si_shader_part_key *key); static void si_fix_resource_usage(struct si_screen *sscreen, struct si_shader *shader); -/* Ideally pass the sample mask input to the PS epilog as v14, which - * is its usual location, so that the shader doesn't have to add v_mov. - */ -#define PS_EPILOG_SAMPLEMASK_MIN_LOC 14 - static bool llvm_type_is_64bit(struct si_shader_context *ctx, LLVMTypeRef type) { @@ -87,7 +78,7 @@ static bool is_multi_part_shader(struct si_shader_context *ctx) } /** Whether the shader runs on a merged HW stage (LSHS or ESGS) */ -static bool is_merged_shader(struct si_shader_context *ctx) +bool si_is_merged_shader(struct si_shader_context *ctx) { return ctx->shader->key.as_ngg || is_multi_part_shader(ctx); } @@ -1233,119 +1224,6 @@ static LLVMValueRef si_nir_load_input_gs(struct ac_shader_abi *abi, return ac_build_varying_gather_values(&ctx->ac, value, num_components, component); } -static LLVMValueRef si_build_fs_interp(struct si_shader_context *ctx, - unsigned attr_index, unsigned chan, - LLVMValueRef prim_mask, - LLVMValueRef i, LLVMValueRef j) -{ - if (i || j) { - return ac_build_fs_interp(&ctx->ac, - LLVMConstInt(ctx->i32, chan, 0), - LLVMConstInt(ctx->i32, attr_index, 0), - prim_mask, i, j); - } - return ac_build_fs_interp_mov(&ctx->ac, - LLVMConstInt(ctx->i32, 2, 0), /* P0 */ - LLVMConstInt(ctx->i32, chan, 0), - LLVMConstInt(ctx->i32, attr_index, 0), - prim_mask); -} - -/** - * Interpolate a fragment shader input. - * - * @param ctx context - * @param input_index index of the input in hardware - * @param semantic_name TGSI_SEMANTIC_* - * @param semantic_index semantic index - * @param num_interp_inputs number of all interpolated inputs (= BCOLOR offset) - * @param colors_read_mask color components read (4 bits for each color, 8 bits in total) - * @param interp_param interpolation weights (i,j) - * @param prim_mask SI_PARAM_PRIM_MASK - * @param face SI_PARAM_FRONT_FACE - * @param result the return value (4 components) - */ -static void interp_fs_color(struct si_shader_context *ctx, - unsigned input_index, - unsigned semantic_index, - unsigned num_interp_inputs, - unsigned colors_read_mask, - LLVMValueRef interp_param, - LLVMValueRef prim_mask, - LLVMValueRef face, - LLVMValueRef result[4]) -{ - LLVMValueRef i = NULL, j = NULL; - unsigned chan; - - /* fs.constant returns the param from the middle vertex, so it's not - * really useful for flat shading. It's meant to be used for custom - * interpolation (but the intrinsic can't fetch from the other two - * vertices). - * - * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state - * to do the right thing. The only reason we use fs.constant is that - * fs.interp cannot be used on integers, because they can be equal - * to NaN. - * - * When interp is false we will use fs.constant or for newer llvm, - * amdgcn.interp.mov. - */ - bool interp = interp_param != NULL; - - if (interp) { - interp_param = LLVMBuildBitCast(ctx->ac.builder, interp_param, - LLVMVectorType(ctx->f32, 2), ""); - - i = LLVMBuildExtractElement(ctx->ac.builder, interp_param, - ctx->i32_0, ""); - j = LLVMBuildExtractElement(ctx->ac.builder, interp_param, - ctx->i32_1, ""); - } - - if (ctx->shader->key.part.ps.prolog.color_two_side) { - LLVMValueRef is_face_positive; - - /* If BCOLOR0 is used, BCOLOR1 is at offset "num_inputs + 1", - * otherwise it's at offset "num_inputs". - */ - unsigned back_attr_offset = num_interp_inputs; - if (semantic_index == 1 && colors_read_mask & 0xf) - back_attr_offset += 1; - - is_face_positive = LLVMBuildICmp(ctx->ac.builder, LLVMIntNE, - face, ctx->i32_0, ""); - - for (chan = 0; chan < 4; chan++) { - LLVMValueRef front, back; - - front = si_build_fs_interp(ctx, - input_index, chan, - prim_mask, i, j); - back = si_build_fs_interp(ctx, - back_attr_offset, chan, - prim_mask, i, j); - - result[chan] = LLVMBuildSelect(ctx->ac.builder, - is_face_positive, - front, - back, - ""); - } - } else { - for (chan = 0; chan < 4; chan++) { - result[chan] = si_build_fs_interp(ctx, - input_index, chan, - prim_mask, i, j); - } - } -} - -LLVMValueRef si_get_sample_id(struct si_shader_context *ctx) -{ - return si_unpack_param(ctx, ctx->args.ancillary, 8, 4); -} - static LLVMValueRef get_base_vertex(struct ac_shader_abi *abi) { struct si_shader_context *ctx = si_shader_context_from_abi(abi); @@ -1393,44 +1271,6 @@ static LLVMValueRef get_block_size(struct ac_shader_abi *abi) return result; } -/** - * Load a dword from a constant buffer. - */ -static LLVMValueRef buffer_load_const(struct si_shader_context *ctx, - LLVMValueRef resource, - LLVMValueRef offset) -{ - return ac_build_buffer_load(&ctx->ac, resource, 1, NULL, offset, NULL, - 0, 0, true, true); -} - -static LLVMValueRef load_sample_position(struct ac_shader_abi *abi, LLVMValueRef sample_id) -{ - struct si_shader_context *ctx = si_shader_context_from_abi(abi); - LLVMValueRef desc = ac_get_arg(&ctx->ac, ctx->rw_buffers); - LLVMValueRef buf_index = LLVMConstInt(ctx->i32, SI_PS_CONST_SAMPLE_POSITIONS, 0); - LLVMValueRef resource = ac_build_load_to_sgpr(&ctx->ac, desc, buf_index); - - /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */ - LLVMValueRef offset0 = LLVMBuildMul(ctx->ac.builder, sample_id, LLVMConstInt(ctx->i32, 8, 0), ""); - LLVMValueRef offset1 = LLVMBuildAdd(ctx->ac.builder, offset0, LLVMConstInt(ctx->i32, 4, 0), ""); - - LLVMValueRef pos[4] = { - buffer_load_const(ctx, resource, offset0), - buffer_load_const(ctx, resource, offset1), - LLVMConstReal(ctx->f32, 0), - LLVMConstReal(ctx->f32, 0) - }; - - return ac_build_gather_values(&ctx->ac, pos, 4); -} - -static LLVMValueRef load_sample_mask_in(struct ac_shader_abi *abi) -{ - struct si_shader_context *ctx = si_shader_context_from_abi(abi); - return ac_to_integer(&ctx->ac, ac_get_arg(&ctx->ac, ctx->args.sample_coverage)); -} - static LLVMValueRef si_load_tess_coord(struct ac_shader_abi *abi) { struct si_shader_context *ctx = si_shader_context_from_abi(abi); @@ -1479,8 +1319,8 @@ static LLVMValueRef load_tess_level_default(struct si_shader_context *ctx, offset = semantic_name == TGSI_SEMANTIC_TESS_DEFAULT_INNER_LEVEL ? 4 : 0; for (i = 0; i < 4; i++) - val[i] = buffer_load_const(ctx, buf, - LLVMConstInt(ctx->i32, (offset + i) * 4, 0)); + val[i] = si_buffer_load_const(ctx, buf, + LLVMConstInt(ctx->i32, (offset + i) * 4, 0)); return ac_build_gather_values(&ctx->ac, val, 4); } @@ -1626,182 +1466,18 @@ load_ssbo(struct ac_shader_abi *abi, LLVMValueRef index, bool write) } /* Initialize arguments for the shader export intrinsic */ -static void si_llvm_init_export_args(struct si_shader_context *ctx, - LLVMValueRef *values, - unsigned target, - struct ac_export_args *args) -{ - LLVMValueRef f32undef = LLVMGetUndef(ctx->ac.f32); - unsigned spi_shader_col_format = V_028714_SPI_SHADER_32_ABGR; - unsigned chan; - bool is_int8, is_int10; - - /* Default is 0xf. Adjusted below depending on the format. */ - args->enabled_channels = 0xf; /* writemask */ - - /* Specify whether the EXEC mask represents the valid mask */ - args->valid_mask = 0; - - /* Specify whether this is the last export */ - args->done = 0; - - /* Specify the target we are exporting */ - args->target = target; - - if (ctx->type == PIPE_SHADER_FRAGMENT) { - const struct si_shader_key *key = &ctx->shader->key; - unsigned col_formats = key->part.ps.epilog.spi_shader_col_format; - int cbuf = target - V_008DFC_SQ_EXP_MRT; - - assert(cbuf >= 0 && cbuf < 8); - spi_shader_col_format = (col_formats >> (cbuf * 4)) & 0xf; - is_int8 = (key->part.ps.epilog.color_is_int8 >> cbuf) & 0x1; - is_int10 = (key->part.ps.epilog.color_is_int10 >> cbuf) & 0x1; - } - +static void si_llvm_init_vs_export_args(struct si_shader_context *ctx, + LLVMValueRef *values, + unsigned target, + struct ac_export_args *args) +{ + args->enabled_channels = 0xf; /* writemask - default is 0xf */ + args->valid_mask = 0; /* Specify whether the EXEC mask represents the valid mask */ + args->done = 0; /* Specify whether this is the last export */ + args->target = target; /* Specify the target we are exporting */ args->compr = false; - args->out[0] = f32undef; - args->out[1] = f32undef; - args->out[2] = f32undef; - args->out[3] = f32undef; - - LLVMValueRef (*packf)(struct ac_llvm_context *ctx, LLVMValueRef args[2]) = NULL; - LLVMValueRef (*packi)(struct ac_llvm_context *ctx, LLVMValueRef args[2], - unsigned bits, bool hi) = NULL; - - switch (spi_shader_col_format) { - case V_028714_SPI_SHADER_ZERO: - args->enabled_channels = 0; /* writemask */ - args->target = V_008DFC_SQ_EXP_NULL; - break; - - case V_028714_SPI_SHADER_32_R: - args->enabled_channels = 1; /* writemask */ - args->out[0] = values[0]; - break; - - case V_028714_SPI_SHADER_32_GR: - args->enabled_channels = 0x3; /* writemask */ - args->out[0] = values[0]; - args->out[1] = values[1]; - break; - - case V_028714_SPI_SHADER_32_AR: - if (ctx->screen->info.chip_class >= GFX10) { - args->enabled_channels = 0x3; /* writemask */ - args->out[0] = values[0]; - args->out[1] = values[3]; - } else { - args->enabled_channels = 0x9; /* writemask */ - args->out[0] = values[0]; - args->out[3] = values[3]; - } - break; - - case V_028714_SPI_SHADER_FP16_ABGR: - packf = ac_build_cvt_pkrtz_f16; - break; - case V_028714_SPI_SHADER_UNORM16_ABGR: - packf = ac_build_cvt_pknorm_u16; - break; - - case V_028714_SPI_SHADER_SNORM16_ABGR: - packf = ac_build_cvt_pknorm_i16; - break; - - case V_028714_SPI_SHADER_UINT16_ABGR: - packi = ac_build_cvt_pk_u16; - break; - - case V_028714_SPI_SHADER_SINT16_ABGR: - packi = ac_build_cvt_pk_i16; - break; - - case V_028714_SPI_SHADER_32_ABGR: - memcpy(&args->out[0], values, sizeof(values[0]) * 4); - break; - } - - /* Pack f16 or norm_i16/u16. */ - if (packf) { - for (chan = 0; chan < 2; chan++) { - LLVMValueRef pack_args[2] = { - values[2 * chan], - values[2 * chan + 1] - }; - LLVMValueRef packed; - - packed = packf(&ctx->ac, pack_args); - args->out[chan] = ac_to_float(&ctx->ac, packed); - } - args->compr = 1; /* COMPR flag */ - } - /* Pack i16/u16. */ - if (packi) { - for (chan = 0; chan < 2; chan++) { - LLVMValueRef pack_args[2] = { - ac_to_integer(&ctx->ac, values[2 * chan]), - ac_to_integer(&ctx->ac, values[2 * chan + 1]) - }; - LLVMValueRef packed; - - packed = packi(&ctx->ac, pack_args, - is_int8 ? 8 : is_int10 ? 10 : 16, - chan == 1); - args->out[chan] = ac_to_float(&ctx->ac, packed); - } - args->compr = 1; /* COMPR flag */ - } -} - -static void si_alpha_test(struct si_shader_context *ctx, LLVMValueRef alpha) -{ - if (ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_NEVER) { - static LLVMRealPredicate cond_map[PIPE_FUNC_ALWAYS + 1] = { - [PIPE_FUNC_LESS] = LLVMRealOLT, - [PIPE_FUNC_EQUAL] = LLVMRealOEQ, - [PIPE_FUNC_LEQUAL] = LLVMRealOLE, - [PIPE_FUNC_GREATER] = LLVMRealOGT, - [PIPE_FUNC_NOTEQUAL] = LLVMRealONE, - [PIPE_FUNC_GEQUAL] = LLVMRealOGE, - }; - LLVMRealPredicate cond = cond_map[ctx->shader->key.part.ps.epilog.alpha_func]; - assert(cond); - - LLVMValueRef alpha_ref = LLVMGetParam(ctx->main_fn, - SI_PARAM_ALPHA_REF); - LLVMValueRef alpha_pass = - LLVMBuildFCmp(ctx->ac.builder, cond, alpha, alpha_ref, ""); - ac_build_kill_if_false(&ctx->ac, alpha_pass); - } else { - ac_build_kill_if_false(&ctx->ac, ctx->i1false); - } -} - -static LLVMValueRef si_scale_alpha_by_sample_mask(struct si_shader_context *ctx, - LLVMValueRef alpha, - unsigned samplemask_param) -{ - LLVMValueRef coverage; - - /* alpha = alpha * popcount(coverage) / SI_NUM_SMOOTH_AA_SAMPLES */ - coverage = LLVMGetParam(ctx->main_fn, - samplemask_param); - coverage = ac_to_integer(&ctx->ac, coverage); - - coverage = ac_build_intrinsic(&ctx->ac, "llvm.ctpop.i32", - ctx->i32, - &coverage, 1, AC_FUNC_ATTR_READNONE); - - coverage = LLVMBuildUIToFP(ctx->ac.builder, coverage, - ctx->f32, ""); - - coverage = LLVMBuildFMul(ctx->ac.builder, coverage, - LLVMConstReal(ctx->f32, - 1.0 / SI_NUM_SMOOTH_AA_SAMPLES), ""); - - return LLVMBuildFMul(ctx->ac.builder, alpha, coverage, ""); + memcpy(&args->out[0], values, sizeof(values[0]) * 4); } static void si_llvm_emit_clipvertex(struct si_shader_context *ctx, @@ -1830,8 +1506,8 @@ static void si_llvm_emit_clipvertex(struct si_shader_context *ctx, LLVMValueRef addr = LLVMConstInt(ctx->i32, ((reg_index * 4 + chan) * 4 + const_chan) * 4, 0); - base_elt = buffer_load_const(ctx, const_resource, - addr); + base_elt = si_buffer_load_const(ctx, const_resource, + addr); args->out[chan] = ac_build_fmad(&ctx->ac, base_elt, out_elts[const_chan], args->out[chan]); } @@ -2004,8 +1680,8 @@ static void si_export_param(struct si_shader_context *ctx, unsigned index, { struct ac_export_args args; - si_llvm_init_export_args(ctx, values, - V_008DFC_SQ_EXP_PARAM + index, &args); + si_llvm_init_vs_export_args(ctx, values, + V_008DFC_SQ_EXP_PARAM + index, &args); ac_build_export(&ctx->ac, &args); } @@ -2139,8 +1815,8 @@ void si_llvm_export_vs(struct si_shader_context *ctx, for (i = 0; i < noutput; i++) { switch (outputs[i].semantic_name) { case TGSI_SEMANTIC_POSITION: - si_llvm_init_export_args(ctx, outputs[i].values, - V_008DFC_SQ_EXP_POS, &pos_args[0]); + si_llvm_init_vs_export_args(ctx, outputs[i].values, + V_008DFC_SQ_EXP_POS, &pos_args[0]); break; case TGSI_SEMANTIC_PSIZE: psize_value = outputs[i].values[0]; @@ -2157,9 +1833,9 @@ void si_llvm_export_vs(struct si_shader_context *ctx, case TGSI_SEMANTIC_CLIPDIST: if (!shader->key.opt.clip_disable) { unsigned index = 2 + outputs[i].semantic_index; - si_llvm_init_export_args(ctx, outputs[i].values, - V_008DFC_SQ_EXP_POS + index, - &pos_args[index]); + si_llvm_init_vs_export_args(ctx, outputs[i].values, + V_008DFC_SQ_EXP_POS + index, + &pos_args[index]); } break; case TGSI_SEMANTIC_CLIPVERTEX: @@ -2924,192 +2600,6 @@ static void si_llvm_emit_prim_discard_cs_epilogue(struct ac_shader_abi *abi, ctx->return_value = ret; } -struct si_ps_exports { - unsigned num; - struct ac_export_args args[10]; -}; - -static void si_export_mrt_z(struct si_shader_context *ctx, - LLVMValueRef depth, LLVMValueRef stencil, - LLVMValueRef samplemask, struct si_ps_exports *exp) -{ - struct ac_export_args args; - - ac_export_mrt_z(&ctx->ac, depth, stencil, samplemask, &args); - - memcpy(&exp->args[exp->num++], &args, sizeof(args)); -} - -static void si_export_mrt_color(struct si_shader_context *ctx, - LLVMValueRef *color, unsigned index, - unsigned samplemask_param, - bool is_last, struct si_ps_exports *exp) -{ - int i; - - /* Clamp color */ - if (ctx->shader->key.part.ps.epilog.clamp_color) - for (i = 0; i < 4; i++) - color[i] = ac_build_clamp(&ctx->ac, color[i]); - - /* Alpha to one */ - if (ctx->shader->key.part.ps.epilog.alpha_to_one) - color[3] = ctx->ac.f32_1; - - /* Alpha test */ - if (index == 0 && - ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_ALWAYS) - si_alpha_test(ctx, color[3]); - - /* Line & polygon smoothing */ - if (ctx->shader->key.part.ps.epilog.poly_line_smoothing) - color[3] = si_scale_alpha_by_sample_mask(ctx, color[3], - samplemask_param); - - /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */ - if (ctx->shader->key.part.ps.epilog.last_cbuf > 0) { - struct ac_export_args args[8]; - int c, last = -1; - - /* Get the export arguments, also find out what the last one is. */ - for (c = 0; c <= ctx->shader->key.part.ps.epilog.last_cbuf; c++) { - si_llvm_init_export_args(ctx, color, - V_008DFC_SQ_EXP_MRT + c, &args[c]); - if (args[c].enabled_channels) - last = c; - } - - /* Emit all exports. */ - for (c = 0; c <= ctx->shader->key.part.ps.epilog.last_cbuf; c++) { - if (is_last && last == c) { - args[c].valid_mask = 1; /* whether the EXEC mask is valid */ - args[c].done = 1; /* DONE bit */ - } else if (!args[c].enabled_channels) - continue; /* unnecessary NULL export */ - - memcpy(&exp->args[exp->num++], &args[c], sizeof(args[c])); - } - } else { - struct ac_export_args args; - - /* Export */ - si_llvm_init_export_args(ctx, color, V_008DFC_SQ_EXP_MRT + index, - &args); - if (is_last) { - args.valid_mask = 1; /* whether the EXEC mask is valid */ - args.done = 1; /* DONE bit */ - } else if (!args.enabled_channels) - return; /* unnecessary NULL export */ - - memcpy(&exp->args[exp->num++], &args, sizeof(args)); - } -} - -static void si_emit_ps_exports(struct si_shader_context *ctx, - struct si_ps_exports *exp) -{ - for (unsigned i = 0; i < exp->num; i++) - ac_build_export(&ctx->ac, &exp->args[i]); -} - -/** - * Return PS outputs in this order: - * - * v[0:3] = color0.xyzw - * v[4:7] = color1.xyzw - * ... - * vN+0 = Depth - * vN+1 = Stencil - * vN+2 = SampleMask - * vN+3 = SampleMaskIn (used for OpenGL smoothing) - * - * The alpha-ref SGPR is returned via its original location. - */ -static void si_llvm_return_fs_outputs(struct ac_shader_abi *abi, - unsigned max_outputs, - LLVMValueRef *addrs) -{ - struct si_shader_context *ctx = si_shader_context_from_abi(abi); - struct si_shader *shader = ctx->shader; - struct si_shader_info *info = &shader->selector->info; - LLVMBuilderRef builder = ctx->ac.builder; - unsigned i, j, first_vgpr, vgpr; - - LLVMValueRef color[8][4] = {}; - LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; - LLVMValueRef ret; - - if (ctx->postponed_kill) - ac_build_kill_if_false(&ctx->ac, LLVMBuildLoad(builder, ctx->postponed_kill, "")); - - /* Read the output values. */ - for (i = 0; i < info->num_outputs; i++) { - unsigned semantic_name = info->output_semantic_name[i]; - unsigned semantic_index = info->output_semantic_index[i]; - - switch (semantic_name) { - case TGSI_SEMANTIC_COLOR: - assert(semantic_index < 8); - for (j = 0; j < 4; j++) { - LLVMValueRef ptr = addrs[4 * i + j]; - LLVMValueRef result = LLVMBuildLoad(builder, ptr, ""); - color[semantic_index][j] = result; - } - break; - case TGSI_SEMANTIC_POSITION: - depth = LLVMBuildLoad(builder, - addrs[4 * i + 0], ""); - break; - case TGSI_SEMANTIC_STENCIL: - stencil = LLVMBuildLoad(builder, - addrs[4 * i + 0], ""); - break; - case TGSI_SEMANTIC_SAMPLEMASK: - samplemask = LLVMBuildLoad(builder, - addrs[4 * i + 0], ""); - break; - default: - fprintf(stderr, "Warning: GFX6 unhandled fs output type:%d\n", - semantic_name); - } - } - - /* Fill the return structure. */ - ret = ctx->return_value; - - /* Set SGPRs. */ - ret = LLVMBuildInsertValue(builder, ret, - ac_to_integer(&ctx->ac, - LLVMGetParam(ctx->main_fn, - SI_PARAM_ALPHA_REF)), - SI_SGPR_ALPHA_REF, ""); - - /* Set VGPRs */ - first_vgpr = vgpr = SI_SGPR_ALPHA_REF + 1; - for (i = 0; i < ARRAY_SIZE(color); i++) { - if (!color[i][0]) - continue; - - for (j = 0; j < 4; j++) - ret = LLVMBuildInsertValue(builder, ret, color[i][j], vgpr++, ""); - } - if (depth) - ret = LLVMBuildInsertValue(builder, ret, depth, vgpr++, ""); - if (stencil) - ret = LLVMBuildInsertValue(builder, ret, stencil, vgpr++, ""); - if (samplemask) - ret = LLVMBuildInsertValue(builder, ret, samplemask, vgpr++, ""); - - /* Add the input sample mask for smoothing at the end. */ - if (vgpr < first_vgpr + PS_EPILOG_SAMPLEMASK_MIN_LOC) - vgpr = first_vgpr + PS_EPILOG_SAMPLEMASK_MIN_LOC; - ret = LLVMBuildInsertValue(builder, ret, - LLVMGetParam(ctx->main_fn, - SI_PARAM_SAMPLE_COVERAGE), vgpr++, ""); - - ctx->return_value = ret; -} - /* Emit one vertex from the geometry shader */ static void si_llvm_emit_vertex(struct ac_shader_abi *abi, unsigned stream, @@ -3345,7 +2835,7 @@ static void declare_vb_descriptor_input_sgprs(struct si_shader_context *ctx) if (num_vbos_in_user_sgprs) { unsigned user_sgprs = ctx->args.num_sgprs_used; - if (is_merged_shader(ctx)) + if (si_is_merged_shader(ctx)) user_sgprs -= 8; assert(user_sgprs <= SI_SGPR_VS_VB_DESCRIPTOR_FIRST); @@ -3434,11 +2924,11 @@ enum { SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY, }; -static void add_arg_checked(struct ac_shader_args *args, - enum ac_arg_regfile file, - unsigned registers, enum ac_arg_type type, - struct ac_arg *arg, - unsigned idx) +void si_add_arg_checked(struct ac_shader_args *args, + enum ac_arg_regfile file, + unsigned registers, enum ac_arg_type type, + struct ac_arg *arg, + unsigned idx) { assert(args->arg_count == idx); ac_add_arg(args, file, registers, type, arg); @@ -3683,44 +3173,44 @@ static void create_function(struct si_shader_context *ctx) case PIPE_SHADER_FRAGMENT: declare_global_desc_pointers(ctx); declare_per_stage_desc_pointers(ctx, true); - add_arg_checked(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, NULL, + si_add_arg_checked(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, NULL, SI_PARAM_ALPHA_REF); - add_arg_checked(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, &ctx->args.prim_mask, SI_PARAM_PRIM_MASK); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, &ctx->args.persp_sample, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, &ctx->args.persp_sample, SI_PARAM_PERSP_SAMPLE); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, &ctx->args.persp_center, SI_PARAM_PERSP_CENTER); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, &ctx->args.persp_centroid, SI_PARAM_PERSP_CENTROID); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 3, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 3, AC_ARG_INT, NULL, SI_PARAM_PERSP_PULL_MODEL); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, &ctx->args.linear_sample, SI_PARAM_LINEAR_SAMPLE); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, &ctx->args.linear_center, SI_PARAM_LINEAR_CENTER); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 2, AC_ARG_INT, &ctx->args.linear_centroid, SI_PARAM_LINEAR_CENTROID); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 3, AC_ARG_FLOAT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 3, AC_ARG_FLOAT, NULL, SI_PARAM_LINE_STIPPLE_TEX); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, &ctx->args.frag_pos[0], SI_PARAM_POS_X_FLOAT); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, &ctx->args.frag_pos[1], SI_PARAM_POS_Y_FLOAT); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, &ctx->args.frag_pos[2], SI_PARAM_POS_Z_FLOAT); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, &ctx->args.frag_pos[3], SI_PARAM_POS_W_FLOAT); shader->info.face_vgpr_index = ctx->args.num_vgprs_used; - add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_INT, &ctx->args.front_face, SI_PARAM_FRONT_FACE); shader->info.ancillary_vgpr_index = ctx->args.num_vgprs_used; - add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_INT, &ctx->args.ancillary, SI_PARAM_ANCILLARY); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, &ctx->args.sample_coverage, SI_PARAM_SAMPLE_COVERAGE); - add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_INT, + si_add_arg_checked(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_INT, &ctx->pos_fixed_pt, SI_PARAM_POS_FIXED_PT); /* Color inputs from the prolog. */ @@ -3980,34 +3470,6 @@ static void preload_ring_buffers(struct si_shader_context *ctx) } } -static void si_llvm_emit_polygon_stipple(struct si_shader_context *ctx, - LLVMValueRef param_rw_buffers, - struct ac_arg param_pos_fixed_pt) -{ - LLVMBuilderRef builder = ctx->ac.builder; - LLVMValueRef slot, desc, offset, row, bit, address[2]; - - /* Use the fixed-point gl_FragCoord input. - * Since the stipple pattern is 32x32 and it repeats, just get 5 bits - * per coordinate to get the repeating effect. - */ - address[0] = si_unpack_param(ctx, param_pos_fixed_pt, 0, 5); - address[1] = si_unpack_param(ctx, param_pos_fixed_pt, 16, 5); - - /* Load the buffer descriptor. */ - slot = LLVMConstInt(ctx->i32, SI_PS_CONST_POLY_STIPPLE, 0); - desc = ac_build_load_to_sgpr(&ctx->ac, param_rw_buffers, slot); - - /* The stipple pattern is 32x32, each row has 32 bits. */ - offset = LLVMBuildMul(builder, address[1], - LLVMConstInt(ctx->i32, 4, 0), ""); - row = buffer_load_const(ctx, desc, offset); - row = ac_to_integer(&ctx->ac, row); - bit = LLVMBuildLShr(builder, row, address[0], ""); - bit = LLVMBuildTrunc(builder, bit, ctx->i1, ""); - ac_build_kill_if_false(&ctx->ac, bit); -} - /* For the UMR disassembler. */ #define DEBUGGER_END_OF_CODE_MARKER 0xbf9f0000 /* invalid instruction */ #define DEBUGGER_NUM_MARKERS 5 @@ -4488,14 +3950,6 @@ static int si_compile_llvm(struct si_screen *sscreen, return 0; } -static void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret) -{ - if (LLVMGetTypeKind(LLVMTypeOf(ret)) == LLVMVoidTypeKind) - LLVMBuildRetVoid(ctx->ac.builder); - else - LLVMBuildRet(ctx->ac.builder, ret); -} - /* Generate code for the hardware VS shader stage to go with a geometry shader */ struct si_shader * si_generate_gs_copy_shader(struct si_screen *sscreen, @@ -4840,32 +4294,12 @@ LLVMValueRef si_is_gs_thread(struct si_shader_context *ctx) si_unpack_param(ctx, ctx->merged_wave_info, 8, 8), ""); } -static void si_llvm_emit_kill(struct ac_shader_abi *abi, LLVMValueRef visible) -{ - struct si_shader_context *ctx = si_shader_context_from_abi(abi); - LLVMBuilderRef builder = ctx->ac.builder; - - if (ctx->shader->selector->force_correct_derivs_after_kill) { - /* Kill immediately while maintaining WQM. */ - ac_build_kill_if_false(&ctx->ac, - ac_build_wqm_vote(&ctx->ac, visible)); - - LLVMValueRef mask = LLVMBuildLoad(builder, ctx->postponed_kill, ""); - mask = LLVMBuildAnd(builder, mask, visible, ""); - LLVMBuildStore(builder, mask, ctx->postponed_kill); - return; - } - - ac_build_kill_if_false(&ctx->ac, visible); -} - static bool si_build_main_function(struct si_shader_context *ctx, struct nir_shader *nir, bool free_nir) { struct si_shader *shader = ctx->shader; struct si_shader_selector *sel = shader->selector; - // TODO clean all this up! switch (ctx->type) { case PIPE_SHADER_VERTEX: if (shader->key.as_ls) @@ -4906,11 +4340,7 @@ static bool si_build_main_function(struct si_shader_context *ctx, ctx->abi.emit_outputs = si_llvm_emit_gs_epilogue; break; case PIPE_SHADER_FRAGMENT: - ctx->abi.emit_outputs = si_llvm_return_fs_outputs; - ctx->abi.load_sample_position = load_sample_position; - ctx->abi.load_sample_mask_in = load_sample_mask_in; - ctx->abi.emit_fbfetch = si_nir_emit_fbfetch; - ctx->abi.emit_kill = si_llvm_emit_kill; + si_llvm_init_ps_callbacks(ctx); break; case PIPE_SHADER_COMPUTE: ctx->abi.load_local_group_size = get_block_size; @@ -5127,172 +4557,6 @@ static void si_get_vs_prolog_key(const struct si_shader_info *info, } /** - * Compute the PS prolog key, which contains all the information needed to - * build the PS prolog function, and set related bits in shader->config. - */ -static void si_get_ps_prolog_key(struct si_shader *shader, - union si_shader_part_key *key, - bool separate_prolog) -{ - struct si_shader_info *info = &shader->selector->info; - - memset(key, 0, sizeof(*key)); - key->ps_prolog.states = shader->key.part.ps.prolog; - key->ps_prolog.colors_read = info->colors_read; - key->ps_prolog.num_input_sgprs = shader->info.num_input_sgprs; - key->ps_prolog.num_input_vgprs = shader->info.num_input_vgprs; - key->ps_prolog.wqm = info->uses_derivatives && - (key->ps_prolog.colors_read || - key->ps_prolog.states.force_persp_sample_interp || - key->ps_prolog.states.force_linear_sample_interp || - key->ps_prolog.states.force_persp_center_interp || - key->ps_prolog.states.force_linear_center_interp || - key->ps_prolog.states.bc_optimize_for_persp || - key->ps_prolog.states.bc_optimize_for_linear); - key->ps_prolog.ancillary_vgpr_index = shader->info.ancillary_vgpr_index; - - if (info->colors_read) { - unsigned *color = shader->selector->color_attr_index; - - if (shader->key.part.ps.prolog.color_two_side) { - /* BCOLORs are stored after the last input. */ - key->ps_prolog.num_interp_inputs = info->num_inputs; - key->ps_prolog.face_vgpr_index = shader->info.face_vgpr_index; - if (separate_prolog) - shader->config.spi_ps_input_ena |= S_0286CC_FRONT_FACE_ENA(1); - } - - for (unsigned i = 0; i < 2; i++) { - unsigned interp = info->input_interpolate[color[i]]; - unsigned location = info->input_interpolate_loc[color[i]]; - - if (!(info->colors_read & (0xf << i*4))) - continue; - - key->ps_prolog.color_attr_index[i] = color[i]; - - if (shader->key.part.ps.prolog.flatshade_colors && - interp == TGSI_INTERPOLATE_COLOR) - interp = TGSI_INTERPOLATE_CONSTANT; - - switch (interp) { - case TGSI_INTERPOLATE_CONSTANT: - key->ps_prolog.color_interp_vgpr_index[i] = -1; - break; - case TGSI_INTERPOLATE_PERSPECTIVE: - case TGSI_INTERPOLATE_COLOR: - /* Force the interpolation location for colors here. */ - if (shader->key.part.ps.prolog.force_persp_sample_interp) - location = TGSI_INTERPOLATE_LOC_SAMPLE; - if (shader->key.part.ps.prolog.force_persp_center_interp) - location = TGSI_INTERPOLATE_LOC_CENTER; - - switch (location) { - case TGSI_INTERPOLATE_LOC_SAMPLE: - key->ps_prolog.color_interp_vgpr_index[i] = 0; - if (separate_prolog) { - shader->config.spi_ps_input_ena |= - S_0286CC_PERSP_SAMPLE_ENA(1); - } - break; - case TGSI_INTERPOLATE_LOC_CENTER: - key->ps_prolog.color_interp_vgpr_index[i] = 2; - if (separate_prolog) { - shader->config.spi_ps_input_ena |= - S_0286CC_PERSP_CENTER_ENA(1); - } - break; - case TGSI_INTERPOLATE_LOC_CENTROID: - key->ps_prolog.color_interp_vgpr_index[i] = 4; - if (separate_prolog) { - shader->config.spi_ps_input_ena |= - S_0286CC_PERSP_CENTROID_ENA(1); - } - break; - default: - assert(0); - } - break; - case TGSI_INTERPOLATE_LINEAR: - /* Force the interpolation location for colors here. */ - if (shader->key.part.ps.prolog.force_linear_sample_interp) - location = TGSI_INTERPOLATE_LOC_SAMPLE; - if (shader->key.part.ps.prolog.force_linear_center_interp) - location = TGSI_INTERPOLATE_LOC_CENTER; - - /* The VGPR assignment for non-monolithic shaders - * works because InitialPSInputAddr is set on the - * main shader and PERSP_PULL_MODEL is never used. - */ - switch (location) { - case TGSI_INTERPOLATE_LOC_SAMPLE: - key->ps_prolog.color_interp_vgpr_index[i] = - separate_prolog ? 6 : 9; - if (separate_prolog) { - shader->config.spi_ps_input_ena |= - S_0286CC_LINEAR_SAMPLE_ENA(1); - } - break; - case TGSI_INTERPOLATE_LOC_CENTER: - key->ps_prolog.color_interp_vgpr_index[i] = - separate_prolog ? 8 : 11; - if (separate_prolog) { - shader->config.spi_ps_input_ena |= - S_0286CC_LINEAR_CENTER_ENA(1); - } - break; - case TGSI_INTERPOLATE_LOC_CENTROID: - key->ps_prolog.color_interp_vgpr_index[i] = - separate_prolog ? 10 : 13; - if (separate_prolog) { - shader->config.spi_ps_input_ena |= - S_0286CC_LINEAR_CENTROID_ENA(1); - } - break; - default: - assert(0); - } - break; - default: - assert(0); - } - } - } -} - -/** - * Check whether a PS prolog is required based on the key. - */ -static bool si_need_ps_prolog(const union si_shader_part_key *key) -{ - return key->ps_prolog.colors_read || - key->ps_prolog.states.force_persp_sample_interp || - key->ps_prolog.states.force_linear_sample_interp || - key->ps_prolog.states.force_persp_center_interp || - key->ps_prolog.states.force_linear_center_interp || - key->ps_prolog.states.bc_optimize_for_persp || - key->ps_prolog.states.bc_optimize_for_linear || - key->ps_prolog.states.poly_stipple || - key->ps_prolog.states.samplemask_log_ps_iter; -} - -/** - * Compute the PS epilog key, which contains all the information needed to - * build the PS epilog function. - */ -static void si_get_ps_epilog_key(struct si_shader *shader, - union si_shader_part_key *key) -{ - struct si_shader_info *info = &shader->selector->info; - memset(key, 0, sizeof(*key)); - key->ps_epilog.colors_written = info->colors_written; - key->ps_epilog.writes_z = info->writes_z; - key->ps_epilog.writes_stencil = info->writes_stencil; - key->ps_epilog.writes_samplemask = info->writes_samplemask; - key->ps_epilog.states = shader->key.part.ps.epilog; -} - -/** * Build the GS prolog function. Rotate the input vertices for triangle strips * with adjacency. */ @@ -5419,11 +4683,9 @@ static void si_build_gs_prolog_function(struct si_shader_context *ctx, * Given a list of shader part functions, build a wrapper function that * runs them in sequence to form a monolithic shader. */ -static void si_build_wrapper_function(struct si_shader_context *ctx, - LLVMValueRef *parts, - unsigned num_parts, - unsigned main_part, - unsigned next_shader_first_part) +void si_build_wrapper_function(struct si_shader_context *ctx, LLVMValueRef *parts, + unsigned num_parts, unsigned main_part, + unsigned next_shader_first_part) { LLVMBuilderRef builder = ctx->ac.builder; /* PS epilog has one arg per color component; gfx9 merged shader @@ -5515,7 +4777,7 @@ static void si_build_wrapper_function(struct si_shader_context *ctx, si_llvm_create_func(ctx, "wrapper", returns, num_returns, si_get_max_workgroup_size(ctx->shader)); - if (is_merged_shader(ctx)) + if (si_is_merged_shader(ctx)) ac_init_exec_full_mask(&ctx->ac); /* Record the arguments of the function as if they were an output of @@ -5922,27 +5184,7 @@ int si_compile_shader(struct si_screen *sscreen, si_build_wrapper_function(&ctx, parts, 2, 1, 0); } } else if (shader->is_monolithic && ctx.type == PIPE_SHADER_FRAGMENT) { - LLVMValueRef parts[3]; - union si_shader_part_key prolog_key; - union si_shader_part_key epilog_key; - bool need_prolog; - - si_get_ps_prolog_key(shader, &prolog_key, false); - need_prolog = si_need_ps_prolog(&prolog_key); - - parts[need_prolog ? 1 : 0] = ctx.main_fn; - - if (need_prolog) { - si_build_ps_prolog_function(&ctx, &prolog_key); - parts[0] = ctx.main_fn; - } - - si_get_ps_epilog_key(shader, &epilog_key); - si_build_ps_epilog_function(&ctx, &epilog_key); - parts[need_prolog ? 2 : 1] = ctx.main_fn; - - si_build_wrapper_function(&ctx, parts, need_prolog ? 3 : 2, - need_prolog ? 1 : 0, 0); + si_llvm_build_monolithic_ps(&ctx, shader); } si_llvm_optimize_module(&ctx); @@ -6005,7 +5247,7 @@ int si_compile_shader(struct si_screen *sscreen, } /* Add the scratch offset to input SGPRs. */ - if (shader->config.scratch_bytes_per_wave && !is_merged_shader(&ctx)) + if (shader->config.scratch_bytes_per_wave && !si_is_merged_shader(&ctx)) shader->info.num_input_sgprs += 1; /* scratch byte offset */ /* Calculate the number of fragment input VGPRs. */ @@ -6116,17 +5358,6 @@ out: return result; } -static LLVMValueRef si_prolog_get_rw_buffers(struct si_shader_context *ctx) -{ - LLVMValueRef ptr[2], list; - bool merged_shader = is_merged_shader(ctx); - - ptr[0] = LLVMGetParam(ctx->main_fn, (merged_shader ? 8 : 0) + SI_SGPR_RW_BUFFERS); - list = LLVMBuildIntToPtr(ctx->ac.builder, ptr[0], - ac_array_in_const32_addr_space(ctx->v4i32), ""); - return list; -} - /** * Build the vertex shader prolog function. * @@ -6281,8 +5512,8 @@ static void si_build_vs_prolog_function(struct si_shader_context *ctx, for (unsigned j = 0; j < 4; j++) { udiv_factors[j] = - buffer_load_const(ctx, instance_divisor_constbuf, - LLVMConstInt(ctx->i32, i*16 + j*4, 0)); + si_buffer_load_const(ctx, instance_divisor_constbuf, + LLVMConstInt(ctx->i32, i*16 + j*4, 0)); udiv_factors[j] = ac_to_integer(&ctx->ac, udiv_factors[j]); } /* The faster NUW version doesn't work when InstanceID == UINT_MAX. @@ -6507,396 +5738,169 @@ static bool si_shader_select_gs_parts(struct si_screen *sscreen, } /** - * Build the pixel shader prolog function. This handles: - * - two-side color selection and interpolation - * - overriding interpolation parameters for the API PS - * - polygon stippling - * - * All preloaded SGPRs and VGPRs are passed through unmodified unless they are - * overriden by other states. (e.g. per-sample interpolation) - * Interpolated colors are stored after the preloaded VGPRs. + * Compute the PS prolog key, which contains all the information needed to + * build the PS prolog function, and set related bits in shader->config. */ -static void si_build_ps_prolog_function(struct si_shader_context *ctx, - union si_shader_part_key *key) +void si_get_ps_prolog_key(struct si_shader *shader, + union si_shader_part_key *key, + bool separate_prolog) { - LLVMValueRef ret, func; - int num_returns, i, num_color_channels; + struct si_shader_info *info = &shader->selector->info; - assert(si_need_ps_prolog(key)); + memset(key, 0, sizeof(*key)); + key->ps_prolog.states = shader->key.part.ps.prolog; + key->ps_prolog.colors_read = info->colors_read; + key->ps_prolog.num_input_sgprs = shader->info.num_input_sgprs; + key->ps_prolog.num_input_vgprs = shader->info.num_input_vgprs; + key->ps_prolog.wqm = info->uses_derivatives && + (key->ps_prolog.colors_read || + key->ps_prolog.states.force_persp_sample_interp || + key->ps_prolog.states.force_linear_sample_interp || + key->ps_prolog.states.force_persp_center_interp || + key->ps_prolog.states.force_linear_center_interp || + key->ps_prolog.states.bc_optimize_for_persp || + key->ps_prolog.states.bc_optimize_for_linear); + key->ps_prolog.ancillary_vgpr_index = shader->info.ancillary_vgpr_index; - memset(&ctx->args, 0, sizeof(ctx->args)); + if (info->colors_read) { + unsigned *color = shader->selector->color_attr_index; - /* Declare inputs. */ - LLVMTypeRef return_types[AC_MAX_ARGS]; - num_returns = 0; - num_color_channels = util_bitcount(key->ps_prolog.colors_read); - assert(key->ps_prolog.num_input_sgprs + - key->ps_prolog.num_input_vgprs + - num_color_channels <= AC_MAX_ARGS); - for (i = 0; i < key->ps_prolog.num_input_sgprs; i++) { - ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, NULL); - return_types[num_returns++] = ctx->i32; - - } - - struct ac_arg pos_fixed_pt; - struct ac_arg ancillary; - struct ac_arg param_sample_mask; - for (i = 0; i < key->ps_prolog.num_input_vgprs; i++) { - struct ac_arg *arg = NULL; - if (i == key->ps_prolog.ancillary_vgpr_index) { - arg = &ancillary; - } else if (i == key->ps_prolog.ancillary_vgpr_index + 1) { - arg = ¶m_sample_mask; - } else if (i == key->ps_prolog.num_input_vgprs - 1) { - /* POS_FIXED_PT is always last. */ - arg = &pos_fixed_pt; + if (shader->key.part.ps.prolog.color_two_side) { + /* BCOLORs are stored after the last input. */ + key->ps_prolog.num_interp_inputs = info->num_inputs; + key->ps_prolog.face_vgpr_index = shader->info.face_vgpr_index; + if (separate_prolog) + shader->config.spi_ps_input_ena |= S_0286CC_FRONT_FACE_ENA(1); } - ac_add_arg(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, arg); - return_types[num_returns++] = ctx->f32; - } - /* Declare outputs (same as inputs + add colors if needed) */ - for (i = 0; i < num_color_channels; i++) - return_types[num_returns++] = ctx->f32; + for (unsigned i = 0; i < 2; i++) { + unsigned interp = info->input_interpolate[color[i]]; + unsigned location = info->input_interpolate_loc[color[i]]; - /* Create the function. */ - si_llvm_create_func(ctx, "ps_prolog", return_types, num_returns, 0); - func = ctx->main_fn; + if (!(info->colors_read & (0xf << i*4))) + continue; - /* Copy inputs to outputs. This should be no-op, as the registers match, - * but it will prevent the compiler from overwriting them unintentionally. - */ - ret = ctx->return_value; - for (i = 0; i < ctx->args.arg_count; i++) { - LLVMValueRef p = LLVMGetParam(func, i); - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, p, i, ""); - } + key->ps_prolog.color_attr_index[i] = color[i]; - /* Polygon stippling. */ - if (key->ps_prolog.states.poly_stipple) { - LLVMValueRef list = si_prolog_get_rw_buffers(ctx); + if (shader->key.part.ps.prolog.flatshade_colors && + interp == TGSI_INTERPOLATE_COLOR) + interp = TGSI_INTERPOLATE_CONSTANT; - si_llvm_emit_polygon_stipple(ctx, list, pos_fixed_pt); - } + switch (interp) { + case TGSI_INTERPOLATE_CONSTANT: + key->ps_prolog.color_interp_vgpr_index[i] = -1; + break; + case TGSI_INTERPOLATE_PERSPECTIVE: + case TGSI_INTERPOLATE_COLOR: + /* Force the interpolation location for colors here. */ + if (shader->key.part.ps.prolog.force_persp_sample_interp) + location = TGSI_INTERPOLATE_LOC_SAMPLE; + if (shader->key.part.ps.prolog.force_persp_center_interp) + location = TGSI_INTERPOLATE_LOC_CENTER; - if (key->ps_prolog.states.bc_optimize_for_persp || - key->ps_prolog.states.bc_optimize_for_linear) { - unsigned i, base = key->ps_prolog.num_input_sgprs; - LLVMValueRef center[2], centroid[2], tmp, bc_optimize; + switch (location) { + case TGSI_INTERPOLATE_LOC_SAMPLE: + key->ps_prolog.color_interp_vgpr_index[i] = 0; + if (separate_prolog) { + shader->config.spi_ps_input_ena |= + S_0286CC_PERSP_SAMPLE_ENA(1); + } + break; + case TGSI_INTERPOLATE_LOC_CENTER: + key->ps_prolog.color_interp_vgpr_index[i] = 2; + if (separate_prolog) { + shader->config.spi_ps_input_ena |= + S_0286CC_PERSP_CENTER_ENA(1); + } + break; + case TGSI_INTERPOLATE_LOC_CENTROID: + key->ps_prolog.color_interp_vgpr_index[i] = 4; + if (separate_prolog) { + shader->config.spi_ps_input_ena |= + S_0286CC_PERSP_CENTROID_ENA(1); + } + break; + default: + assert(0); + } + break; + case TGSI_INTERPOLATE_LINEAR: + /* Force the interpolation location for colors here. */ + if (shader->key.part.ps.prolog.force_linear_sample_interp) + location = TGSI_INTERPOLATE_LOC_SAMPLE; + if (shader->key.part.ps.prolog.force_linear_center_interp) + location = TGSI_INTERPOLATE_LOC_CENTER; - /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER; - * The hw doesn't compute CENTROID if the whole wave only - * contains fully-covered quads. - * - * PRIM_MASK is after user SGPRs. - */ - bc_optimize = LLVMGetParam(func, SI_PS_NUM_USER_SGPR); - bc_optimize = LLVMBuildLShr(ctx->ac.builder, bc_optimize, - LLVMConstInt(ctx->i32, 31, 0), ""); - bc_optimize = LLVMBuildTrunc(ctx->ac.builder, bc_optimize, - ctx->i1, ""); - - if (key->ps_prolog.states.bc_optimize_for_persp) { - /* Read PERSP_CENTER. */ - for (i = 0; i < 2; i++) - center[i] = LLVMGetParam(func, base + 2 + i); - /* Read PERSP_CENTROID. */ - for (i = 0; i < 2; i++) - centroid[i] = LLVMGetParam(func, base + 4 + i); - /* Select PERSP_CENTROID. */ - for (i = 0; i < 2; i++) { - tmp = LLVMBuildSelect(ctx->ac.builder, bc_optimize, - center[i], centroid[i], ""); - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - tmp, base + 4 + i, ""); - } - } - if (key->ps_prolog.states.bc_optimize_for_linear) { - /* Read LINEAR_CENTER. */ - for (i = 0; i < 2; i++) - center[i] = LLVMGetParam(func, base + 8 + i); - /* Read LINEAR_CENTROID. */ - for (i = 0; i < 2; i++) - centroid[i] = LLVMGetParam(func, base + 10 + i); - /* Select LINEAR_CENTROID. */ - for (i = 0; i < 2; i++) { - tmp = LLVMBuildSelect(ctx->ac.builder, bc_optimize, - center[i], centroid[i], ""); - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - tmp, base + 10 + i, ""); + /* The VGPR assignment for non-monolithic shaders + * works because InitialPSInputAddr is set on the + * main shader and PERSP_PULL_MODEL is never used. + */ + switch (location) { + case TGSI_INTERPOLATE_LOC_SAMPLE: + key->ps_prolog.color_interp_vgpr_index[i] = + separate_prolog ? 6 : 9; + if (separate_prolog) { + shader->config.spi_ps_input_ena |= + S_0286CC_LINEAR_SAMPLE_ENA(1); + } + break; + case TGSI_INTERPOLATE_LOC_CENTER: + key->ps_prolog.color_interp_vgpr_index[i] = + separate_prolog ? 8 : 11; + if (separate_prolog) { + shader->config.spi_ps_input_ena |= + S_0286CC_LINEAR_CENTER_ENA(1); + } + break; + case TGSI_INTERPOLATE_LOC_CENTROID: + key->ps_prolog.color_interp_vgpr_index[i] = + separate_prolog ? 10 : 13; + if (separate_prolog) { + shader->config.spi_ps_input_ena |= + S_0286CC_LINEAR_CENTROID_ENA(1); + } + break; + default: + assert(0); + } + break; + default: + assert(0); } } } - - /* Force per-sample interpolation. */ - if (key->ps_prolog.states.force_persp_sample_interp) { - unsigned i, base = key->ps_prolog.num_input_sgprs; - LLVMValueRef persp_sample[2]; - - /* Read PERSP_SAMPLE. */ - for (i = 0; i < 2; i++) - persp_sample[i] = LLVMGetParam(func, base + i); - /* Overwrite PERSP_CENTER. */ - for (i = 0; i < 2; i++) - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - persp_sample[i], base + 2 + i, ""); - /* Overwrite PERSP_CENTROID. */ - for (i = 0; i < 2; i++) - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - persp_sample[i], base + 4 + i, ""); - } - if (key->ps_prolog.states.force_linear_sample_interp) { - unsigned i, base = key->ps_prolog.num_input_sgprs; - LLVMValueRef linear_sample[2]; - - /* Read LINEAR_SAMPLE. */ - for (i = 0; i < 2; i++) - linear_sample[i] = LLVMGetParam(func, base + 6 + i); - /* Overwrite LINEAR_CENTER. */ - for (i = 0; i < 2; i++) - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - linear_sample[i], base + 8 + i, ""); - /* Overwrite LINEAR_CENTROID. */ - for (i = 0; i < 2; i++) - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - linear_sample[i], base + 10 + i, ""); - } - - /* Force center interpolation. */ - if (key->ps_prolog.states.force_persp_center_interp) { - unsigned i, base = key->ps_prolog.num_input_sgprs; - LLVMValueRef persp_center[2]; - - /* Read PERSP_CENTER. */ - for (i = 0; i < 2; i++) - persp_center[i] = LLVMGetParam(func, base + 2 + i); - /* Overwrite PERSP_SAMPLE. */ - for (i = 0; i < 2; i++) - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - persp_center[i], base + i, ""); - /* Overwrite PERSP_CENTROID. */ - for (i = 0; i < 2; i++) - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - persp_center[i], base + 4 + i, ""); - } - if (key->ps_prolog.states.force_linear_center_interp) { - unsigned i, base = key->ps_prolog.num_input_sgprs; - LLVMValueRef linear_center[2]; - - /* Read LINEAR_CENTER. */ - for (i = 0; i < 2; i++) - linear_center[i] = LLVMGetParam(func, base + 8 + i); - /* Overwrite LINEAR_SAMPLE. */ - for (i = 0; i < 2; i++) - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - linear_center[i], base + 6 + i, ""); - /* Overwrite LINEAR_CENTROID. */ - for (i = 0; i < 2; i++) - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, - linear_center[i], base + 10 + i, ""); - } - - /* Interpolate colors. */ - unsigned color_out_idx = 0; - for (i = 0; i < 2; i++) { - unsigned writemask = (key->ps_prolog.colors_read >> (i * 4)) & 0xf; - unsigned face_vgpr = key->ps_prolog.num_input_sgprs + - key->ps_prolog.face_vgpr_index; - LLVMValueRef interp[2], color[4]; - LLVMValueRef interp_ij = NULL, prim_mask = NULL, face = NULL; - - if (!writemask) - continue; - - /* If the interpolation qualifier is not CONSTANT (-1). */ - if (key->ps_prolog.color_interp_vgpr_index[i] != -1) { - unsigned interp_vgpr = key->ps_prolog.num_input_sgprs + - key->ps_prolog.color_interp_vgpr_index[i]; - - /* Get the (i,j) updated by bc_optimize handling. */ - interp[0] = LLVMBuildExtractValue(ctx->ac.builder, ret, - interp_vgpr, ""); - interp[1] = LLVMBuildExtractValue(ctx->ac.builder, ret, - interp_vgpr + 1, ""); - interp_ij = ac_build_gather_values(&ctx->ac, interp, 2); - } - - /* Use the absolute location of the input. */ - prim_mask = LLVMGetParam(func, SI_PS_NUM_USER_SGPR); - - if (key->ps_prolog.states.color_two_side) { - face = LLVMGetParam(func, face_vgpr); - face = ac_to_integer(&ctx->ac, face); - } - - interp_fs_color(ctx, - key->ps_prolog.color_attr_index[i], i, - key->ps_prolog.num_interp_inputs, - key->ps_prolog.colors_read, interp_ij, - prim_mask, face, color); - - while (writemask) { - unsigned chan = u_bit_scan(&writemask); - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, color[chan], - ctx->args.arg_count + color_out_idx++, ""); - } - } - - /* Section 15.2.2 (Shader Inputs) of the OpenGL 4.5 (Core Profile) spec - * says: - * - * "When per-sample shading is active due to the use of a fragment - * input qualified by sample or due to the use of the gl_SampleID - * or gl_SamplePosition variables, only the bit for the current - * sample is set in gl_SampleMaskIn. When state specifies multiple - * fragment shader invocations for a given fragment, the sample - * mask for any single fragment shader invocation may specify a - * subset of the covered samples for the fragment. In this case, - * the bit corresponding to each covered sample will be set in - * exactly one fragment shader invocation." - * - * The samplemask loaded by hardware is always the coverage of the - * entire pixel/fragment, so mask bits out based on the sample ID. - */ - if (key->ps_prolog.states.samplemask_log_ps_iter) { - /* The bit pattern matches that used by fixed function fragment - * processing. */ - static const uint16_t ps_iter_masks[] = { - 0xffff, /* not used */ - 0x5555, - 0x1111, - 0x0101, - 0x0001, - }; - assert(key->ps_prolog.states.samplemask_log_ps_iter < ARRAY_SIZE(ps_iter_masks)); - - uint32_t ps_iter_mask = ps_iter_masks[key->ps_prolog.states.samplemask_log_ps_iter]; - LLVMValueRef sampleid = si_unpack_param(ctx, ancillary, 8, 4); - LLVMValueRef samplemask = ac_get_arg(&ctx->ac, param_sample_mask); - - samplemask = ac_to_integer(&ctx->ac, samplemask); - samplemask = LLVMBuildAnd( - ctx->ac.builder, - samplemask, - LLVMBuildShl(ctx->ac.builder, - LLVMConstInt(ctx->i32, ps_iter_mask, false), - sampleid, ""), - ""); - samplemask = ac_to_float(&ctx->ac, samplemask); - - ret = LLVMBuildInsertValue(ctx->ac.builder, ret, samplemask, - param_sample_mask.arg_index, ""); - } - - /* Tell LLVM to insert WQM instruction sequence when needed. */ - if (key->ps_prolog.wqm) { - LLVMAddTargetDependentFunctionAttr(func, - "amdgpu-ps-wqm-outputs", ""); - } - - si_llvm_build_ret(ctx, ret); } /** - * Build the pixel shader epilog function. This handles everything that must be - * emulated for pixel shader exports. (alpha-test, format conversions, etc) + * Check whether a PS prolog is required based on the key. */ -static void si_build_ps_epilog_function(struct si_shader_context *ctx, - union si_shader_part_key *key) +bool si_need_ps_prolog(const union si_shader_part_key *key) { - LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; - int i; - struct si_ps_exports exp = {}; - - memset(&ctx->args, 0, sizeof(ctx->args)); - - /* Declare input SGPRs. */ - ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, &ctx->rw_buffers); - ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, - &ctx->bindless_samplers_and_images); - ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, - &ctx->const_and_shader_buffers); - ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, - &ctx->samplers_and_images); - add_arg_checked(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_FLOAT, - NULL, SI_PARAM_ALPHA_REF); - - /* Declare input VGPRs. */ - unsigned required_num_params = - ctx->args.num_sgprs_used + - util_bitcount(key->ps_epilog.colors_written) * 4 + - key->ps_epilog.writes_z + - key->ps_epilog.writes_stencil + - key->ps_epilog.writes_samplemask; - - required_num_params = MAX2(required_num_params, - ctx->args.num_sgprs_used + PS_EPILOG_SAMPLEMASK_MIN_LOC + 1); - - while (ctx->args.arg_count < required_num_params) - ac_add_arg(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, NULL); - - /* Create the function. */ - si_llvm_create_func(ctx, "ps_epilog", NULL, 0, 0); - /* Disable elimination of unused inputs. */ - ac_llvm_add_target_dep_function_attr(ctx->main_fn, - "InitialPSInputAddr", 0xffffff); - - /* Process colors. */ - unsigned vgpr = ctx->args.num_sgprs_used; - unsigned colors_written = key->ps_epilog.colors_written; - int last_color_export = -1; - - /* Find the last color export. */ - if (!key->ps_epilog.writes_z && - !key->ps_epilog.writes_stencil && - !key->ps_epilog.writes_samplemask) { - unsigned spi_format = key->ps_epilog.states.spi_shader_col_format; - - /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */ - if (colors_written == 0x1 && key->ps_epilog.states.last_cbuf > 0) { - /* Just set this if any of the colorbuffers are enabled. */ - if (spi_format & - ((1ull << (4 * (key->ps_epilog.states.last_cbuf + 1))) - 1)) - last_color_export = 0; - } else { - for (i = 0; i < 8; i++) - if (colors_written & (1 << i) && - (spi_format >> (i * 4)) & 0xf) - last_color_export = i; - } - } - - while (colors_written) { - LLVMValueRef color[4]; - int mrt = u_bit_scan(&colors_written); - - for (i = 0; i < 4; i++) - color[i] = LLVMGetParam(ctx->main_fn, vgpr++); - - si_export_mrt_color(ctx, color, mrt, - ctx->args.arg_count - 1, - mrt == last_color_export, &exp); - } - - /* Process depth, stencil, samplemask. */ - if (key->ps_epilog.writes_z) - depth = LLVMGetParam(ctx->main_fn, vgpr++); - if (key->ps_epilog.writes_stencil) - stencil = LLVMGetParam(ctx->main_fn, vgpr++); - if (key->ps_epilog.writes_samplemask) - samplemask = LLVMGetParam(ctx->main_fn, vgpr++); - - if (depth || stencil || samplemask) - si_export_mrt_z(ctx, depth, stencil, samplemask, &exp); - else if (last_color_export == -1) - ac_build_export_null(&ctx->ac); - - if (exp.num) - si_emit_ps_exports(ctx, &exp); + return key->ps_prolog.colors_read || + key->ps_prolog.states.force_persp_sample_interp || + key->ps_prolog.states.force_linear_sample_interp || + key->ps_prolog.states.force_persp_center_interp || + key->ps_prolog.states.force_linear_center_interp || + key->ps_prolog.states.bc_optimize_for_persp || + key->ps_prolog.states.bc_optimize_for_linear || + key->ps_prolog.states.poly_stipple || + key->ps_prolog.states.samplemask_log_ps_iter; +} - /* Compile. */ - LLVMBuildRetVoid(ctx->ac.builder); +/** + * Compute the PS epilog key, which contains all the information needed to + * build the PS epilog function. + */ +void si_get_ps_epilog_key(struct si_shader *shader, + union si_shader_part_key *key) +{ + struct si_shader_info *info = &shader->selector->info; + memset(key, 0, sizeof(*key)); + key->ps_epilog.colors_written = info->colors_written; + key->ps_epilog.writes_z = info->writes_z; + key->ps_epilog.writes_stencil = info->writes_stencil; + key->ps_epilog.writes_samplemask = info->writes_samplemask; + key->ps_epilog.states = shader->key.part.ps.epilog; } /** @@ -6919,7 +5923,7 @@ static bool si_shader_select_ps_parts(struct si_screen *sscreen, si_get_shader_part(sscreen, &sscreen->ps_prologs, PIPE_SHADER_FRAGMENT, true, &prolog_key, compiler, debug, - si_build_ps_prolog_function, + si_llvm_build_ps_prolog, "Fragment Shader Prolog"); if (!shader->prolog) return false; @@ -6932,7 +5936,7 @@ static bool si_shader_select_ps_parts(struct si_screen *sscreen, si_get_shader_part(sscreen, &sscreen->ps_epilogs, PIPE_SHADER_FRAGMENT, false, &epilog_key, compiler, debug, - si_build_ps_epilog_function, + si_llvm_build_ps_epilog, "Fragment Shader Epilog"); if (!shader->epilog) return false; diff --git a/src/gallium/drivers/radeonsi/si_shader_internal.h b/src/gallium/drivers/radeonsi/si_shader_internal.h index 7b64ca30630..5fc13279a81 100644 --- a/src/gallium/drivers/radeonsi/si_shader_internal.h +++ b/src/gallium/drivers/radeonsi/si_shader_internal.h @@ -35,6 +35,11 @@ struct pipe_debug_callback; #define RADEON_LLVM_MAX_INPUTS 32 * 4 +/* Ideally pass the sample mask input to the PS epilog as v14, which + * is its usual location, so that the shader doesn't have to add v_mov. + */ +#define PS_EPILOG_SAMPLEMASK_MIN_LOC 14 + struct si_shader_output_values { LLVMValueRef values[4]; unsigned semantic_name; @@ -235,9 +240,7 @@ LLVMValueRef si_nir_load_input_tes(struct ac_shader_abi *abi, bool is_patch, bool is_compact, bool load_input); -LLVMValueRef si_nir_lookup_interp_param(struct ac_shader_abi *abi, - enum glsl_interp_mode interp, - unsigned location); +bool si_is_merged_shader(struct si_shader_context *ctx); LLVMValueRef si_get_sample_id(struct si_shader_context *ctx); LLVMValueRef si_load_sampler_desc(struct si_shader_context *ctx, LLVMValueRef list, LLVMValueRef index, @@ -246,7 +249,10 @@ LLVMValueRef si_load_image_desc(struct si_shader_context *ctx, LLVMValueRef list, LLVMValueRef index, enum ac_descriptor_type desc_type, bool uses_store, bool bindless); -LLVMValueRef si_nir_emit_fbfetch(struct ac_shader_abi *abi); +LLVMValueRef si_buffer_load_const(struct si_shader_context *ctx, + LLVMValueRef resource, LLVMValueRef offset); +void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret); +LLVMValueRef si_prolog_get_rw_buffers(struct si_shader_context *ctx); void si_declare_compute_memory(struct si_shader_context *ctx); LLVMValueRef si_get_primitive_id(struct si_shader_context *ctx, unsigned swizzle); @@ -258,6 +264,11 @@ void si_emit_streamout_output(struct si_shader_context *ctx, LLVMValueRef const *so_write_offsets, struct pipe_stream_output *stream_out, struct si_shader_output_values *shader_out); +void si_add_arg_checked(struct ac_shader_args *args, + enum ac_arg_regfile file, + unsigned registers, enum ac_arg_type type, + struct ac_arg *arg, + unsigned idx); void si_llvm_load_input_vs( struct si_shader_context *ctx, @@ -271,6 +282,15 @@ LLVMValueRef si_unpack_param(struct si_shader_context *ctx, unsigned bitwidth); LLVMValueRef si_is_es_thread(struct si_shader_context *ctx); LLVMValueRef si_is_gs_thread(struct si_shader_context *ctx); +void si_build_wrapper_function(struct si_shader_context *ctx, LLVMValueRef *parts, + unsigned num_parts, unsigned main_part, + unsigned next_shader_first_part); +bool si_need_ps_prolog(const union si_shader_part_key *key); +void si_get_ps_prolog_key(struct si_shader *shader, + union si_shader_part_key *key, + bool separate_prolog); +void si_get_ps_epilog_key(struct si_shader *shader, + union si_shader_part_key *key); void gfx10_emit_ngg_epilogue(struct ac_shader_abi *abi, unsigned max_outputs, @@ -282,4 +302,13 @@ void gfx10_ngg_gs_emit_prologue(struct si_shader_context *ctx); void gfx10_ngg_gs_emit_epilogue(struct si_shader_context *ctx); void gfx10_ngg_calculate_subgroup_info(struct si_shader *shader); +/* si_shader_llvm_ps.c */ +void si_llvm_build_ps_prolog(struct si_shader_context *ctx, + union si_shader_part_key *key); +void si_llvm_build_ps_epilog(struct si_shader_context *ctx, + union si_shader_part_key *key); +void si_llvm_build_monolithic_ps(struct si_shader_context *ctx, + struct si_shader *shader); +void si_llvm_init_ps_callbacks(struct si_shader_context *ctx); + #endif diff --git a/src/gallium/drivers/radeonsi/si_shader_llvm_build.c b/src/gallium/drivers/radeonsi/si_shader_llvm_build.c index e3625214258..ddf499998c0 100644 --- a/src/gallium/drivers/radeonsi/si_shader_llvm_build.c +++ b/src/gallium/drivers/radeonsi/si_shader_llvm_build.c @@ -159,61 +159,31 @@ LLVMValueRef si_load_sampler_desc(struct si_shader_context *ctx, return ac_build_load_to_sgpr(&ctx->ac, list, index); } -LLVMValueRef si_nir_emit_fbfetch(struct ac_shader_abi *abi) +/** + * Load a dword from a constant buffer. + */ +LLVMValueRef si_buffer_load_const(struct si_shader_context *ctx, + LLVMValueRef resource, LLVMValueRef offset) { - struct si_shader_context *ctx = si_shader_context_from_abi(abi); - struct ac_image_args args = {}; - LLVMValueRef ptr, image, fmask; - - /* Ignore src0, because KHR_blend_func_extended disallows multiple render - * targets. - */ - - /* Load the image descriptor. */ - STATIC_ASSERT(SI_PS_IMAGE_COLORBUF0 % 2 == 0); - ptr = ac_get_arg(&ctx->ac, ctx->rw_buffers); - ptr = LLVMBuildPointerCast(ctx->ac.builder, ptr, - ac_array_in_const32_addr_space(ctx->v8i32), ""); - image = ac_build_load_to_sgpr(&ctx->ac, ptr, - LLVMConstInt(ctx->i32, SI_PS_IMAGE_COLORBUF0 / 2, 0)); - - unsigned chan = 0; - - args.coords[chan++] = si_unpack_param(ctx, ctx->pos_fixed_pt, 0, 16); - - if (!ctx->shader->key.mono.u.ps.fbfetch_is_1D) - args.coords[chan++] = si_unpack_param(ctx, ctx->pos_fixed_pt, 16, 16); - - /* Get the current render target layer index. */ - if (ctx->shader->key.mono.u.ps.fbfetch_layered) - args.coords[chan++] = si_unpack_param(ctx, ctx->args.ancillary, 16, 11); - - if (ctx->shader->key.mono.u.ps.fbfetch_msaa) - args.coords[chan++] = si_get_sample_id(ctx); - - if (ctx->shader->key.mono.u.ps.fbfetch_msaa && - !(ctx->screen->debug_flags & DBG(NO_FMASK))) { - fmask = ac_build_load_to_sgpr(&ctx->ac, ptr, - LLVMConstInt(ctx->i32, SI_PS_IMAGE_COLORBUF0_FMASK / 2, 0)); - - ac_apply_fmask_to_sample(&ctx->ac, fmask, args.coords, - ctx->shader->key.mono.u.ps.fbfetch_layered); - } + return ac_build_buffer_load(&ctx->ac, resource, 1, NULL, offset, NULL, + 0, 0, true, true); +} - args.opcode = ac_image_load; - args.resource = image; - args.dmask = 0xf; - args.attributes = AC_FUNC_ATTR_READNONE; - - if (ctx->shader->key.mono.u.ps.fbfetch_msaa) - args.dim = ctx->shader->key.mono.u.ps.fbfetch_layered ? - ac_image_2darraymsaa : ac_image_2dmsaa; - else if (ctx->shader->key.mono.u.ps.fbfetch_is_1D) - args.dim = ctx->shader->key.mono.u.ps.fbfetch_layered ? - ac_image_1darray : ac_image_1d; +void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret) +{ + if (LLVMGetTypeKind(LLVMTypeOf(ret)) == LLVMVoidTypeKind) + LLVMBuildRetVoid(ctx->ac.builder); else - args.dim = ctx->shader->key.mono.u.ps.fbfetch_layered ? - ac_image_2darray : ac_image_2d; + LLVMBuildRet(ctx->ac.builder, ret); +} + +LLVMValueRef si_prolog_get_rw_buffers(struct si_shader_context *ctx) +{ + LLVMValueRef ptr[2], list; + bool merged_shader = si_is_merged_shader(ctx); - return ac_build_image_opcode(&ctx->ac, &args); + ptr[0] = LLVMGetParam(ctx->main_fn, (merged_shader ? 8 : 0) + SI_SGPR_RW_BUFFERS); + list = LLVMBuildIntToPtr(ctx->ac.builder, ptr[0], + ac_array_in_const32_addr_space(ctx->v4i32), ""); + return list; } diff --git a/src/gallium/drivers/radeonsi/si_shader_llvm_ps.c b/src/gallium/drivers/radeonsi/si_shader_llvm_ps.c new file mode 100644 index 00000000000..74ae6f7b96e --- /dev/null +++ b/src/gallium/drivers/radeonsi/si_shader_llvm_ps.c @@ -0,0 +1,1061 @@ +/* + * Copyright 2020 Advanced Micro Devices, Inc. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "si_shader_internal.h" +#include "si_pipe.h" +#include "sid.h" + +LLVMValueRef si_get_sample_id(struct si_shader_context *ctx) +{ + return si_unpack_param(ctx, ctx->args.ancillary, 8, 4); +} + +static LLVMValueRef load_sample_mask_in(struct ac_shader_abi *abi) +{ + struct si_shader_context *ctx = si_shader_context_from_abi(abi); + return ac_to_integer(&ctx->ac, ac_get_arg(&ctx->ac, ctx->args.sample_coverage)); +} + +static LLVMValueRef load_sample_position(struct ac_shader_abi *abi, LLVMValueRef sample_id) +{ + struct si_shader_context *ctx = si_shader_context_from_abi(abi); + LLVMValueRef desc = ac_get_arg(&ctx->ac, ctx->rw_buffers); + LLVMValueRef buf_index = LLVMConstInt(ctx->i32, SI_PS_CONST_SAMPLE_POSITIONS, 0); + LLVMValueRef resource = ac_build_load_to_sgpr(&ctx->ac, desc, buf_index); + + /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */ + LLVMValueRef offset0 = LLVMBuildMul(ctx->ac.builder, sample_id, LLVMConstInt(ctx->i32, 8, 0), ""); + LLVMValueRef offset1 = LLVMBuildAdd(ctx->ac.builder, offset0, LLVMConstInt(ctx->i32, 4, 0), ""); + + LLVMValueRef pos[4] = { + si_buffer_load_const(ctx, resource, offset0), + si_buffer_load_const(ctx, resource, offset1), + LLVMConstReal(ctx->f32, 0), + LLVMConstReal(ctx->f32, 0) + }; + + return ac_build_gather_values(&ctx->ac, pos, 4); +} + +static LLVMValueRef si_nir_emit_fbfetch(struct ac_shader_abi *abi) +{ + struct si_shader_context *ctx = si_shader_context_from_abi(abi); + struct ac_image_args args = {}; + LLVMValueRef ptr, image, fmask; + + /* Ignore src0, because KHR_blend_func_extended disallows multiple render + * targets. + */ + + /* Load the image descriptor. */ + STATIC_ASSERT(SI_PS_IMAGE_COLORBUF0 % 2 == 0); + ptr = ac_get_arg(&ctx->ac, ctx->rw_buffers); + ptr = LLVMBuildPointerCast(ctx->ac.builder, ptr, + ac_array_in_const32_addr_space(ctx->v8i32), ""); + image = ac_build_load_to_sgpr(&ctx->ac, ptr, + LLVMConstInt(ctx->i32, SI_PS_IMAGE_COLORBUF0 / 2, 0)); + + unsigned chan = 0; + + args.coords[chan++] = si_unpack_param(ctx, ctx->pos_fixed_pt, 0, 16); + + if (!ctx->shader->key.mono.u.ps.fbfetch_is_1D) + args.coords[chan++] = si_unpack_param(ctx, ctx->pos_fixed_pt, 16, 16); + + /* Get the current render target layer index. */ + if (ctx->shader->key.mono.u.ps.fbfetch_layered) + args.coords[chan++] = si_unpack_param(ctx, ctx->args.ancillary, 16, 11); + + if (ctx->shader->key.mono.u.ps.fbfetch_msaa) + args.coords[chan++] = si_get_sample_id(ctx); + + if (ctx->shader->key.mono.u.ps.fbfetch_msaa && + !(ctx->screen->debug_flags & DBG(NO_FMASK))) { + fmask = ac_build_load_to_sgpr(&ctx->ac, ptr, + LLVMConstInt(ctx->i32, SI_PS_IMAGE_COLORBUF0_FMASK / 2, 0)); + + ac_apply_fmask_to_sample(&ctx->ac, fmask, args.coords, + ctx->shader->key.mono.u.ps.fbfetch_layered); + } + + args.opcode = ac_image_load; + args.resource = image; + args.dmask = 0xf; + args.attributes = AC_FUNC_ATTR_READNONE; + + if (ctx->shader->key.mono.u.ps.fbfetch_msaa) + args.dim = ctx->shader->key.mono.u.ps.fbfetch_layered ? + ac_image_2darraymsaa : ac_image_2dmsaa; + else if (ctx->shader->key.mono.u.ps.fbfetch_is_1D) + args.dim = ctx->shader->key.mono.u.ps.fbfetch_layered ? + ac_image_1darray : ac_image_1d; + else + args.dim = ctx->shader->key.mono.u.ps.fbfetch_layered ? + ac_image_2darray : ac_image_2d; + + return ac_build_image_opcode(&ctx->ac, &args); +} + +static LLVMValueRef si_build_fs_interp(struct si_shader_context *ctx, + unsigned attr_index, unsigned chan, + LLVMValueRef prim_mask, + LLVMValueRef i, LLVMValueRef j) +{ + if (i || j) { + return ac_build_fs_interp(&ctx->ac, + LLVMConstInt(ctx->i32, chan, 0), + LLVMConstInt(ctx->i32, attr_index, 0), + prim_mask, i, j); + } + return ac_build_fs_interp_mov(&ctx->ac, + LLVMConstInt(ctx->i32, 2, 0), /* P0 */ + LLVMConstInt(ctx->i32, chan, 0), + LLVMConstInt(ctx->i32, attr_index, 0), + prim_mask); +} + +/** + * Interpolate a fragment shader input. + * + * @param ctx context + * @param input_index index of the input in hardware + * @param semantic_name TGSI_SEMANTIC_* + * @param semantic_index semantic index + * @param num_interp_inputs number of all interpolated inputs (= BCOLOR offset) + * @param colors_read_mask color components read (4 bits for each color, 8 bits in total) + * @param interp_param interpolation weights (i,j) + * @param prim_mask SI_PARAM_PRIM_MASK + * @param face SI_PARAM_FRONT_FACE + * @param result the return value (4 components) + */ +static void interp_fs_color(struct si_shader_context *ctx, + unsigned input_index, + unsigned semantic_index, + unsigned num_interp_inputs, + unsigned colors_read_mask, + LLVMValueRef interp_param, + LLVMValueRef prim_mask, + LLVMValueRef face, + LLVMValueRef result[4]) +{ + LLVMValueRef i = NULL, j = NULL; + unsigned chan; + + /* fs.constant returns the param from the middle vertex, so it's not + * really useful for flat shading. It's meant to be used for custom + * interpolation (but the intrinsic can't fetch from the other two + * vertices). + * + * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state + * to do the right thing. The only reason we use fs.constant is that + * fs.interp cannot be used on integers, because they can be equal + * to NaN. + * + * When interp is false we will use fs.constant or for newer llvm, + * amdgcn.interp.mov. + */ + bool interp = interp_param != NULL; + + if (interp) { + interp_param = LLVMBuildBitCast(ctx->ac.builder, interp_param, + LLVMVectorType(ctx->f32, 2), ""); + + i = LLVMBuildExtractElement(ctx->ac.builder, interp_param, + ctx->i32_0, ""); + j = LLVMBuildExtractElement(ctx->ac.builder, interp_param, + ctx->i32_1, ""); + } + + if (ctx->shader->key.part.ps.prolog.color_two_side) { + LLVMValueRef is_face_positive; + + /* If BCOLOR0 is used, BCOLOR1 is at offset "num_inputs + 1", + * otherwise it's at offset "num_inputs". + */ + unsigned back_attr_offset = num_interp_inputs; + if (semantic_index == 1 && colors_read_mask & 0xf) + back_attr_offset += 1; + + is_face_positive = LLVMBuildICmp(ctx->ac.builder, LLVMIntNE, + face, ctx->i32_0, ""); + + for (chan = 0; chan < 4; chan++) { + LLVMValueRef front, back; + + front = si_build_fs_interp(ctx, + input_index, chan, + prim_mask, i, j); + back = si_build_fs_interp(ctx, + back_attr_offset, chan, + prim_mask, i, j); + + result[chan] = LLVMBuildSelect(ctx->ac.builder, + is_face_positive, + front, + back, + ""); + } + } else { + for (chan = 0; chan < 4; chan++) { + result[chan] = si_build_fs_interp(ctx, + input_index, chan, + prim_mask, i, j); + } + } +} + +static void si_alpha_test(struct si_shader_context *ctx, LLVMValueRef alpha) +{ + if (ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_NEVER) { + static LLVMRealPredicate cond_map[PIPE_FUNC_ALWAYS + 1] = { + [PIPE_FUNC_LESS] = LLVMRealOLT, + [PIPE_FUNC_EQUAL] = LLVMRealOEQ, + [PIPE_FUNC_LEQUAL] = LLVMRealOLE, + [PIPE_FUNC_GREATER] = LLVMRealOGT, + [PIPE_FUNC_NOTEQUAL] = LLVMRealONE, + [PIPE_FUNC_GEQUAL] = LLVMRealOGE, + }; + LLVMRealPredicate cond = cond_map[ctx->shader->key.part.ps.epilog.alpha_func]; + assert(cond); + + LLVMValueRef alpha_ref = LLVMGetParam(ctx->main_fn, + SI_PARAM_ALPHA_REF); + LLVMValueRef alpha_pass = + LLVMBuildFCmp(ctx->ac.builder, cond, alpha, alpha_ref, ""); + ac_build_kill_if_false(&ctx->ac, alpha_pass); + } else { + ac_build_kill_if_false(&ctx->ac, ctx->i1false); + } +} + +static LLVMValueRef si_scale_alpha_by_sample_mask(struct si_shader_context *ctx, + LLVMValueRef alpha, + unsigned samplemask_param) +{ + LLVMValueRef coverage; + + /* alpha = alpha * popcount(coverage) / SI_NUM_SMOOTH_AA_SAMPLES */ + coverage = LLVMGetParam(ctx->main_fn, + samplemask_param); + coverage = ac_to_integer(&ctx->ac, coverage); + + coverage = ac_build_intrinsic(&ctx->ac, "llvm.ctpop.i32", + ctx->i32, + &coverage, 1, AC_FUNC_ATTR_READNONE); + + coverage = LLVMBuildUIToFP(ctx->ac.builder, coverage, + ctx->f32, ""); + + coverage = LLVMBuildFMul(ctx->ac.builder, coverage, + LLVMConstReal(ctx->f32, + 1.0 / SI_NUM_SMOOTH_AA_SAMPLES), ""); + + return LLVMBuildFMul(ctx->ac.builder, alpha, coverage, ""); +} + +struct si_ps_exports { + unsigned num; + struct ac_export_args args[10]; +}; + +static void si_export_mrt_z(struct si_shader_context *ctx, + LLVMValueRef depth, LLVMValueRef stencil, + LLVMValueRef samplemask, struct si_ps_exports *exp) +{ + struct ac_export_args args; + + ac_export_mrt_z(&ctx->ac, depth, stencil, samplemask, &args); + + memcpy(&exp->args[exp->num++], &args, sizeof(args)); +} + +/* Initialize arguments for the shader export intrinsic */ +static void si_llvm_init_ps_export_args(struct si_shader_context *ctx, + LLVMValueRef *values, + unsigned target, + struct ac_export_args *args) +{ + const struct si_shader_key *key = &ctx->shader->key; + unsigned col_formats = key->part.ps.epilog.spi_shader_col_format; + LLVMValueRef f32undef = LLVMGetUndef(ctx->ac.f32); + unsigned spi_shader_col_format; + unsigned chan; + bool is_int8, is_int10; + int cbuf = target - V_008DFC_SQ_EXP_MRT; + + assert(cbuf >= 0 && cbuf < 8); + + spi_shader_col_format = (col_formats >> (cbuf * 4)) & 0xf; + is_int8 = (key->part.ps.epilog.color_is_int8 >> cbuf) & 0x1; + is_int10 = (key->part.ps.epilog.color_is_int10 >> cbuf) & 0x1; + + /* Default is 0xf. Adjusted below depending on the format. */ + args->enabled_channels = 0xf; /* writemask */ + + /* Specify whether the EXEC mask represents the valid mask */ + args->valid_mask = 0; + + /* Specify whether this is the last export */ + args->done = 0; + + /* Specify the target we are exporting */ + args->target = target; + + args->compr = false; + args->out[0] = f32undef; + args->out[1] = f32undef; + args->out[2] = f32undef; + args->out[3] = f32undef; + + LLVMValueRef (*packf)(struct ac_llvm_context *ctx, LLVMValueRef args[2]) = NULL; + LLVMValueRef (*packi)(struct ac_llvm_context *ctx, LLVMValueRef args[2], + unsigned bits, bool hi) = NULL; + + switch (spi_shader_col_format) { + case V_028714_SPI_SHADER_ZERO: + args->enabled_channels = 0; /* writemask */ + args->target = V_008DFC_SQ_EXP_NULL; + break; + + case V_028714_SPI_SHADER_32_R: + args->enabled_channels = 1; /* writemask */ + args->out[0] = values[0]; + break; + + case V_028714_SPI_SHADER_32_GR: + args->enabled_channels = 0x3; /* writemask */ + args->out[0] = values[0]; + args->out[1] = values[1]; + break; + + case V_028714_SPI_SHADER_32_AR: + if (ctx->screen->info.chip_class >= GFX10) { + args->enabled_channels = 0x3; /* writemask */ + args->out[0] = values[0]; + args->out[1] = values[3]; + } else { + args->enabled_channels = 0x9; /* writemask */ + args->out[0] = values[0]; + args->out[3] = values[3]; + } + break; + + case V_028714_SPI_SHADER_FP16_ABGR: + packf = ac_build_cvt_pkrtz_f16; + break; + + case V_028714_SPI_SHADER_UNORM16_ABGR: + packf = ac_build_cvt_pknorm_u16; + break; + + case V_028714_SPI_SHADER_SNORM16_ABGR: + packf = ac_build_cvt_pknorm_i16; + break; + + case V_028714_SPI_SHADER_UINT16_ABGR: + packi = ac_build_cvt_pk_u16; + break; + + case V_028714_SPI_SHADER_SINT16_ABGR: + packi = ac_build_cvt_pk_i16; + break; + + case V_028714_SPI_SHADER_32_ABGR: + memcpy(&args->out[0], values, sizeof(values[0]) * 4); + break; + } + + /* Pack f16 or norm_i16/u16. */ + if (packf) { + for (chan = 0; chan < 2; chan++) { + LLVMValueRef pack_args[2] = { + values[2 * chan], + values[2 * chan + 1] + }; + LLVMValueRef packed; + + packed = packf(&ctx->ac, pack_args); + args->out[chan] = ac_to_float(&ctx->ac, packed); + } + args->compr = 1; /* COMPR flag */ + } + /* Pack i16/u16. */ + if (packi) { + for (chan = 0; chan < 2; chan++) { + LLVMValueRef pack_args[2] = { + ac_to_integer(&ctx->ac, values[2 * chan]), + ac_to_integer(&ctx->ac, values[2 * chan + 1]) + }; + LLVMValueRef packed; + + packed = packi(&ctx->ac, pack_args, + is_int8 ? 8 : is_int10 ? 10 : 16, + chan == 1); + args->out[chan] = ac_to_float(&ctx->ac, packed); + } + args->compr = 1; /* COMPR flag */ + } +} + +static void si_export_mrt_color(struct si_shader_context *ctx, + LLVMValueRef *color, unsigned index, + unsigned samplemask_param, + bool is_last, struct si_ps_exports *exp) +{ + int i; + + /* Clamp color */ + if (ctx->shader->key.part.ps.epilog.clamp_color) + for (i = 0; i < 4; i++) + color[i] = ac_build_clamp(&ctx->ac, color[i]); + + /* Alpha to one */ + if (ctx->shader->key.part.ps.epilog.alpha_to_one) + color[3] = ctx->ac.f32_1; + + /* Alpha test */ + if (index == 0 && + ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_ALWAYS) + si_alpha_test(ctx, color[3]); + + /* Line & polygon smoothing */ + if (ctx->shader->key.part.ps.epilog.poly_line_smoothing) + color[3] = si_scale_alpha_by_sample_mask(ctx, color[3], + samplemask_param); + + /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */ + if (ctx->shader->key.part.ps.epilog.last_cbuf > 0) { + struct ac_export_args args[8]; + int c, last = -1; + + /* Get the export arguments, also find out what the last one is. */ + for (c = 0; c <= ctx->shader->key.part.ps.epilog.last_cbuf; c++) { + si_llvm_init_ps_export_args(ctx, color, + V_008DFC_SQ_EXP_MRT + c, &args[c]); + if (args[c].enabled_channels) + last = c; + } + + /* Emit all exports. */ + for (c = 0; c <= ctx->shader->key.part.ps.epilog.last_cbuf; c++) { + if (is_last && last == c) { + args[c].valid_mask = 1; /* whether the EXEC mask is valid */ + args[c].done = 1; /* DONE bit */ + } else if (!args[c].enabled_channels) + continue; /* unnecessary NULL export */ + + memcpy(&exp->args[exp->num++], &args[c], sizeof(args[c])); + } + } else { + struct ac_export_args args; + + /* Export */ + si_llvm_init_ps_export_args(ctx, color, V_008DFC_SQ_EXP_MRT + index, + &args); + if (is_last) { + args.valid_mask = 1; /* whether the EXEC mask is valid */ + args.done = 1; /* DONE bit */ + } else if (!args.enabled_channels) + return; /* unnecessary NULL export */ + + memcpy(&exp->args[exp->num++], &args, sizeof(args)); + } +} + +static void si_emit_ps_exports(struct si_shader_context *ctx, + struct si_ps_exports *exp) +{ + for (unsigned i = 0; i < exp->num; i++) + ac_build_export(&ctx->ac, &exp->args[i]); +} + +/** + * Return PS outputs in this order: + * + * v[0:3] = color0.xyzw + * v[4:7] = color1.xyzw + * ... + * vN+0 = Depth + * vN+1 = Stencil + * vN+2 = SampleMask + * vN+3 = SampleMaskIn (used for OpenGL smoothing) + * + * The alpha-ref SGPR is returned via its original location. + */ +static void si_llvm_return_fs_outputs(struct ac_shader_abi *abi, + unsigned max_outputs, + LLVMValueRef *addrs) +{ + struct si_shader_context *ctx = si_shader_context_from_abi(abi); + struct si_shader *shader = ctx->shader; + struct si_shader_info *info = &shader->selector->info; + LLVMBuilderRef builder = ctx->ac.builder; + unsigned i, j, first_vgpr, vgpr; + + LLVMValueRef color[8][4] = {}; + LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; + LLVMValueRef ret; + + if (ctx->postponed_kill) + ac_build_kill_if_false(&ctx->ac, LLVMBuildLoad(builder, ctx->postponed_kill, "")); + + /* Read the output values. */ + for (i = 0; i < info->num_outputs; i++) { + unsigned semantic_name = info->output_semantic_name[i]; + unsigned semantic_index = info->output_semantic_index[i]; + + switch (semantic_name) { + case TGSI_SEMANTIC_COLOR: + assert(semantic_index < 8); + for (j = 0; j < 4; j++) { + LLVMValueRef ptr = addrs[4 * i + j]; + LLVMValueRef result = LLVMBuildLoad(builder, ptr, ""); + color[semantic_index][j] = result; + } + break; + case TGSI_SEMANTIC_POSITION: + depth = LLVMBuildLoad(builder, + addrs[4 * i + 0], ""); + break; + case TGSI_SEMANTIC_STENCIL: + stencil = LLVMBuildLoad(builder, + addrs[4 * i + 0], ""); + break; + case TGSI_SEMANTIC_SAMPLEMASK: + samplemask = LLVMBuildLoad(builder, + addrs[4 * i + 0], ""); + break; + default: + fprintf(stderr, "Warning: GFX6 unhandled fs output type:%d\n", + semantic_name); + } + } + + /* Fill the return structure. */ + ret = ctx->return_value; + + /* Set SGPRs. */ + ret = LLVMBuildInsertValue(builder, ret, + ac_to_integer(&ctx->ac, + LLVMGetParam(ctx->main_fn, + SI_PARAM_ALPHA_REF)), + SI_SGPR_ALPHA_REF, ""); + + /* Set VGPRs */ + first_vgpr = vgpr = SI_SGPR_ALPHA_REF + 1; + for (i = 0; i < ARRAY_SIZE(color); i++) { + if (!color[i][0]) + continue; + + for (j = 0; j < 4; j++) + ret = LLVMBuildInsertValue(builder, ret, color[i][j], vgpr++, ""); + } + if (depth) + ret = LLVMBuildInsertValue(builder, ret, depth, vgpr++, ""); + if (stencil) + ret = LLVMBuildInsertValue(builder, ret, stencil, vgpr++, ""); + if (samplemask) + ret = LLVMBuildInsertValue(builder, ret, samplemask, vgpr++, ""); + + /* Add the input sample mask for smoothing at the end. */ + if (vgpr < first_vgpr + PS_EPILOG_SAMPLEMASK_MIN_LOC) + vgpr = first_vgpr + PS_EPILOG_SAMPLEMASK_MIN_LOC; + ret = LLVMBuildInsertValue(builder, ret, + LLVMGetParam(ctx->main_fn, + SI_PARAM_SAMPLE_COVERAGE), vgpr++, ""); + + ctx->return_value = ret; +} + +static void si_llvm_emit_polygon_stipple(struct si_shader_context *ctx, + LLVMValueRef param_rw_buffers, + struct ac_arg param_pos_fixed_pt) +{ + LLVMBuilderRef builder = ctx->ac.builder; + LLVMValueRef slot, desc, offset, row, bit, address[2]; + + /* Use the fixed-point gl_FragCoord input. + * Since the stipple pattern is 32x32 and it repeats, just get 5 bits + * per coordinate to get the repeating effect. + */ + address[0] = si_unpack_param(ctx, param_pos_fixed_pt, 0, 5); + address[1] = si_unpack_param(ctx, param_pos_fixed_pt, 16, 5); + + /* Load the buffer descriptor. */ + slot = LLVMConstInt(ctx->i32, SI_PS_CONST_POLY_STIPPLE, 0); + desc = ac_build_load_to_sgpr(&ctx->ac, param_rw_buffers, slot); + + /* The stipple pattern is 32x32, each row has 32 bits. */ + offset = LLVMBuildMul(builder, address[1], + LLVMConstInt(ctx->i32, 4, 0), ""); + row = si_buffer_load_const(ctx, desc, offset); + row = ac_to_integer(&ctx->ac, row); + bit = LLVMBuildLShr(builder, row, address[0], ""); + bit = LLVMBuildTrunc(builder, bit, ctx->i1, ""); + ac_build_kill_if_false(&ctx->ac, bit); +} + +static void si_llvm_emit_kill(struct ac_shader_abi *abi, LLVMValueRef visible) +{ + struct si_shader_context *ctx = si_shader_context_from_abi(abi); + LLVMBuilderRef builder = ctx->ac.builder; + + if (ctx->shader->selector->force_correct_derivs_after_kill) { + /* Kill immediately while maintaining WQM. */ + ac_build_kill_if_false(&ctx->ac, + ac_build_wqm_vote(&ctx->ac, visible)); + + LLVMValueRef mask = LLVMBuildLoad(builder, ctx->postponed_kill, ""); + mask = LLVMBuildAnd(builder, mask, visible, ""); + LLVMBuildStore(builder, mask, ctx->postponed_kill); + return; + } + + ac_build_kill_if_false(&ctx->ac, visible); +} + +/** + * Build the pixel shader prolog function. This handles: + * - two-side color selection and interpolation + * - overriding interpolation parameters for the API PS + * - polygon stippling + * + * All preloaded SGPRs and VGPRs are passed through unmodified unless they are + * overriden by other states. (e.g. per-sample interpolation) + * Interpolated colors are stored after the preloaded VGPRs. + */ +void si_llvm_build_ps_prolog(struct si_shader_context *ctx, + union si_shader_part_key *key) +{ + LLVMValueRef ret, func; + int num_returns, i, num_color_channels; + + memset(&ctx->args, 0, sizeof(ctx->args)); + + /* Declare inputs. */ + LLVMTypeRef return_types[AC_MAX_ARGS]; + num_returns = 0; + num_color_channels = util_bitcount(key->ps_prolog.colors_read); + assert(key->ps_prolog.num_input_sgprs + + key->ps_prolog.num_input_vgprs + + num_color_channels <= AC_MAX_ARGS); + for (i = 0; i < key->ps_prolog.num_input_sgprs; i++) { + ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, NULL); + return_types[num_returns++] = ctx->i32; + + } + + struct ac_arg pos_fixed_pt; + struct ac_arg ancillary; + struct ac_arg param_sample_mask; + for (i = 0; i < key->ps_prolog.num_input_vgprs; i++) { + struct ac_arg *arg = NULL; + if (i == key->ps_prolog.ancillary_vgpr_index) { + arg = &ancillary; + } else if (i == key->ps_prolog.ancillary_vgpr_index + 1) { + arg = ¶m_sample_mask; + } else if (i == key->ps_prolog.num_input_vgprs - 1) { + /* POS_FIXED_PT is always last. */ + arg = &pos_fixed_pt; + } + ac_add_arg(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, arg); + return_types[num_returns++] = ctx->f32; + } + + /* Declare outputs (same as inputs + add colors if needed) */ + for (i = 0; i < num_color_channels; i++) + return_types[num_returns++] = ctx->f32; + + /* Create the function. */ + si_llvm_create_func(ctx, "ps_prolog", return_types, num_returns, 0); + func = ctx->main_fn; + + /* Copy inputs to outputs. This should be no-op, as the registers match, + * but it will prevent the compiler from overwriting them unintentionally. + */ + ret = ctx->return_value; + for (i = 0; i < ctx->args.arg_count; i++) { + LLVMValueRef p = LLVMGetParam(func, i); + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, p, i, ""); + } + + /* Polygon stippling. */ + if (key->ps_prolog.states.poly_stipple) { + LLVMValueRef list = si_prolog_get_rw_buffers(ctx); + + si_llvm_emit_polygon_stipple(ctx, list, pos_fixed_pt); + } + + if (key->ps_prolog.states.bc_optimize_for_persp || + key->ps_prolog.states.bc_optimize_for_linear) { + unsigned i, base = key->ps_prolog.num_input_sgprs; + LLVMValueRef center[2], centroid[2], tmp, bc_optimize; + + /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER; + * The hw doesn't compute CENTROID if the whole wave only + * contains fully-covered quads. + * + * PRIM_MASK is after user SGPRs. + */ + bc_optimize = LLVMGetParam(func, SI_PS_NUM_USER_SGPR); + bc_optimize = LLVMBuildLShr(ctx->ac.builder, bc_optimize, + LLVMConstInt(ctx->i32, 31, 0), ""); + bc_optimize = LLVMBuildTrunc(ctx->ac.builder, bc_optimize, + ctx->i1, ""); + + if (key->ps_prolog.states.bc_optimize_for_persp) { + /* Read PERSP_CENTER. */ + for (i = 0; i < 2; i++) + center[i] = LLVMGetParam(func, base + 2 + i); + /* Read PERSP_CENTROID. */ + for (i = 0; i < 2; i++) + centroid[i] = LLVMGetParam(func, base + 4 + i); + /* Select PERSP_CENTROID. */ + for (i = 0; i < 2; i++) { + tmp = LLVMBuildSelect(ctx->ac.builder, bc_optimize, + center[i], centroid[i], ""); + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + tmp, base + 4 + i, ""); + } + } + if (key->ps_prolog.states.bc_optimize_for_linear) { + /* Read LINEAR_CENTER. */ + for (i = 0; i < 2; i++) + center[i] = LLVMGetParam(func, base + 8 + i); + /* Read LINEAR_CENTROID. */ + for (i = 0; i < 2; i++) + centroid[i] = LLVMGetParam(func, base + 10 + i); + /* Select LINEAR_CENTROID. */ + for (i = 0; i < 2; i++) { + tmp = LLVMBuildSelect(ctx->ac.builder, bc_optimize, + center[i], centroid[i], ""); + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + tmp, base + 10 + i, ""); + } + } + } + + /* Force per-sample interpolation. */ + if (key->ps_prolog.states.force_persp_sample_interp) { + unsigned i, base = key->ps_prolog.num_input_sgprs; + LLVMValueRef persp_sample[2]; + + /* Read PERSP_SAMPLE. */ + for (i = 0; i < 2; i++) + persp_sample[i] = LLVMGetParam(func, base + i); + /* Overwrite PERSP_CENTER. */ + for (i = 0; i < 2; i++) + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + persp_sample[i], base + 2 + i, ""); + /* Overwrite PERSP_CENTROID. */ + for (i = 0; i < 2; i++) + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + persp_sample[i], base + 4 + i, ""); + } + if (key->ps_prolog.states.force_linear_sample_interp) { + unsigned i, base = key->ps_prolog.num_input_sgprs; + LLVMValueRef linear_sample[2]; + + /* Read LINEAR_SAMPLE. */ + for (i = 0; i < 2; i++) + linear_sample[i] = LLVMGetParam(func, base + 6 + i); + /* Overwrite LINEAR_CENTER. */ + for (i = 0; i < 2; i++) + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + linear_sample[i], base + 8 + i, ""); + /* Overwrite LINEAR_CENTROID. */ + for (i = 0; i < 2; i++) + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + linear_sample[i], base + 10 + i, ""); + } + + /* Force center interpolation. */ + if (key->ps_prolog.states.force_persp_center_interp) { + unsigned i, base = key->ps_prolog.num_input_sgprs; + LLVMValueRef persp_center[2]; + + /* Read PERSP_CENTER. */ + for (i = 0; i < 2; i++) + persp_center[i] = LLVMGetParam(func, base + 2 + i); + /* Overwrite PERSP_SAMPLE. */ + for (i = 0; i < 2; i++) + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + persp_center[i], base + i, ""); + /* Overwrite PERSP_CENTROID. */ + for (i = 0; i < 2; i++) + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + persp_center[i], base + 4 + i, ""); + } + if (key->ps_prolog.states.force_linear_center_interp) { + unsigned i, base = key->ps_prolog.num_input_sgprs; + LLVMValueRef linear_center[2]; + + /* Read LINEAR_CENTER. */ + for (i = 0; i < 2; i++) + linear_center[i] = LLVMGetParam(func, base + 8 + i); + /* Overwrite LINEAR_SAMPLE. */ + for (i = 0; i < 2; i++) + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + linear_center[i], base + 6 + i, ""); + /* Overwrite LINEAR_CENTROID. */ + for (i = 0; i < 2; i++) + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, + linear_center[i], base + 10 + i, ""); + } + + /* Interpolate colors. */ + unsigned color_out_idx = 0; + for (i = 0; i < 2; i++) { + unsigned writemask = (key->ps_prolog.colors_read >> (i * 4)) & 0xf; + unsigned face_vgpr = key->ps_prolog.num_input_sgprs + + key->ps_prolog.face_vgpr_index; + LLVMValueRef interp[2], color[4]; + LLVMValueRef interp_ij = NULL, prim_mask = NULL, face = NULL; + + if (!writemask) + continue; + + /* If the interpolation qualifier is not CONSTANT (-1). */ + if (key->ps_prolog.color_interp_vgpr_index[i] != -1) { + unsigned interp_vgpr = key->ps_prolog.num_input_sgprs + + key->ps_prolog.color_interp_vgpr_index[i]; + + /* Get the (i,j) updated by bc_optimize handling. */ + interp[0] = LLVMBuildExtractValue(ctx->ac.builder, ret, + interp_vgpr, ""); + interp[1] = LLVMBuildExtractValue(ctx->ac.builder, ret, + interp_vgpr + 1, ""); + interp_ij = ac_build_gather_values(&ctx->ac, interp, 2); + } + + /* Use the absolute location of the input. */ + prim_mask = LLVMGetParam(func, SI_PS_NUM_USER_SGPR); + + if (key->ps_prolog.states.color_two_side) { + face = LLVMGetParam(func, face_vgpr); + face = ac_to_integer(&ctx->ac, face); + } + + interp_fs_color(ctx, + key->ps_prolog.color_attr_index[i], i, + key->ps_prolog.num_interp_inputs, + key->ps_prolog.colors_read, interp_ij, + prim_mask, face, color); + + while (writemask) { + unsigned chan = u_bit_scan(&writemask); + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, color[chan], + ctx->args.arg_count + color_out_idx++, ""); + } + } + + /* Section 15.2.2 (Shader Inputs) of the OpenGL 4.5 (Core Profile) spec + * says: + * + * "When per-sample shading is active due to the use of a fragment + * input qualified by sample or due to the use of the gl_SampleID + * or gl_SamplePosition variables, only the bit for the current + * sample is set in gl_SampleMaskIn. When state specifies multiple + * fragment shader invocations for a given fragment, the sample + * mask for any single fragment shader invocation may specify a + * subset of the covered samples for the fragment. In this case, + * the bit corresponding to each covered sample will be set in + * exactly one fragment shader invocation." + * + * The samplemask loaded by hardware is always the coverage of the + * entire pixel/fragment, so mask bits out based on the sample ID. + */ + if (key->ps_prolog.states.samplemask_log_ps_iter) { + /* The bit pattern matches that used by fixed function fragment + * processing. */ + static const uint16_t ps_iter_masks[] = { + 0xffff, /* not used */ + 0x5555, + 0x1111, + 0x0101, + 0x0001, + }; + assert(key->ps_prolog.states.samplemask_log_ps_iter < ARRAY_SIZE(ps_iter_masks)); + + uint32_t ps_iter_mask = ps_iter_masks[key->ps_prolog.states.samplemask_log_ps_iter]; + LLVMValueRef sampleid = si_unpack_param(ctx, ancillary, 8, 4); + LLVMValueRef samplemask = ac_get_arg(&ctx->ac, param_sample_mask); + + samplemask = ac_to_integer(&ctx->ac, samplemask); + samplemask = LLVMBuildAnd( + ctx->ac.builder, + samplemask, + LLVMBuildShl(ctx->ac.builder, + LLVMConstInt(ctx->i32, ps_iter_mask, false), + sampleid, ""), + ""); + samplemask = ac_to_float(&ctx->ac, samplemask); + + ret = LLVMBuildInsertValue(ctx->ac.builder, ret, samplemask, + param_sample_mask.arg_index, ""); + } + + /* Tell LLVM to insert WQM instruction sequence when needed. */ + if (key->ps_prolog.wqm) { + LLVMAddTargetDependentFunctionAttr(func, + "amdgpu-ps-wqm-outputs", ""); + } + + si_llvm_build_ret(ctx, ret); +} + +/** + * Build the pixel shader epilog function. This handles everything that must be + * emulated for pixel shader exports. (alpha-test, format conversions, etc) + */ +void si_llvm_build_ps_epilog(struct si_shader_context *ctx, + union si_shader_part_key *key) +{ + LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; + int i; + struct si_ps_exports exp = {}; + + memset(&ctx->args, 0, sizeof(ctx->args)); + + /* Declare input SGPRs. */ + ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, &ctx->rw_buffers); + ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, + &ctx->bindless_samplers_and_images); + ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, + &ctx->const_and_shader_buffers); + ac_add_arg(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_INT, + &ctx->samplers_and_images); + si_add_arg_checked(&ctx->args, AC_ARG_SGPR, 1, AC_ARG_FLOAT, + NULL, SI_PARAM_ALPHA_REF); + + /* Declare input VGPRs. */ + unsigned required_num_params = + ctx->args.num_sgprs_used + + util_bitcount(key->ps_epilog.colors_written) * 4 + + key->ps_epilog.writes_z + + key->ps_epilog.writes_stencil + + key->ps_epilog.writes_samplemask; + + required_num_params = MAX2(required_num_params, + ctx->args.num_sgprs_used + PS_EPILOG_SAMPLEMASK_MIN_LOC + 1); + + while (ctx->args.arg_count < required_num_params) + ac_add_arg(&ctx->args, AC_ARG_VGPR, 1, AC_ARG_FLOAT, NULL); + + /* Create the function. */ + si_llvm_create_func(ctx, "ps_epilog", NULL, 0, 0); + /* Disable elimination of unused inputs. */ + ac_llvm_add_target_dep_function_attr(ctx->main_fn, + "InitialPSInputAddr", 0xffffff); + + /* Process colors. */ + unsigned vgpr = ctx->args.num_sgprs_used; + unsigned colors_written = key->ps_epilog.colors_written; + int last_color_export = -1; + + /* Find the last color export. */ + if (!key->ps_epilog.writes_z && + !key->ps_epilog.writes_stencil && + !key->ps_epilog.writes_samplemask) { + unsigned spi_format = key->ps_epilog.states.spi_shader_col_format; + + /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */ + if (colors_written == 0x1 && key->ps_epilog.states.last_cbuf > 0) { + /* Just set this if any of the colorbuffers are enabled. */ + if (spi_format & + ((1ull << (4 * (key->ps_epilog.states.last_cbuf + 1))) - 1)) + last_color_export = 0; + } else { + for (i = 0; i < 8; i++) + if (colors_written & (1 << i) && + (spi_format >> (i * 4)) & 0xf) + last_color_export = i; + } + } + + while (colors_written) { + LLVMValueRef color[4]; + int mrt = u_bit_scan(&colors_written); + + for (i = 0; i < 4; i++) + color[i] = LLVMGetParam(ctx->main_fn, vgpr++); + + si_export_mrt_color(ctx, color, mrt, + ctx->args.arg_count - 1, + mrt == last_color_export, &exp); + } + + /* Process depth, stencil, samplemask. */ + if (key->ps_epilog.writes_z) + depth = LLVMGetParam(ctx->main_fn, vgpr++); + if (key->ps_epilog.writes_stencil) + stencil = LLVMGetParam(ctx->main_fn, vgpr++); + if (key->ps_epilog.writes_samplemask) + samplemask = LLVMGetParam(ctx->main_fn, vgpr++); + + if (depth || stencil || samplemask) + si_export_mrt_z(ctx, depth, stencil, samplemask, &exp); + else if (last_color_export == -1) + ac_build_export_null(&ctx->ac); + + if (exp.num) + si_emit_ps_exports(ctx, &exp); + + /* Compile. */ + LLVMBuildRetVoid(ctx->ac.builder); +} + +void si_llvm_build_monolithic_ps(struct si_shader_context *ctx, + struct si_shader *shader) +{ + LLVMValueRef parts[3]; + unsigned num_parts = 0, main_index; + + union si_shader_part_key prolog_key; + si_get_ps_prolog_key(shader, &prolog_key, false); + + if (si_need_ps_prolog(&prolog_key)) { + si_llvm_build_ps_prolog(ctx, &prolog_key); + parts[num_parts++] = ctx->main_fn; + } + + main_index = num_parts; + parts[num_parts++] = ctx->main_fn; + + union si_shader_part_key epilog_key; + si_get_ps_epilog_key(shader, &epilog_key); + si_llvm_build_ps_epilog(ctx, &epilog_key); + parts[num_parts++] = ctx->main_fn; + + si_build_wrapper_function(ctx, parts, num_parts, main_index, 0); +} + +void si_llvm_init_ps_callbacks(struct si_shader_context *ctx) +{ + ctx->abi.emit_outputs = si_llvm_return_fs_outputs; + ctx->abi.load_sample_position = load_sample_position; + ctx->abi.load_sample_mask_in = load_sample_mask_in; + ctx->abi.emit_fbfetch = si_nir_emit_fbfetch; + ctx->abi.emit_kill = si_llvm_emit_kill; +} diff --git a/src/gallium/drivers/radeonsi/si_shader_nir.c b/src/gallium/drivers/radeonsi/si_shader_nir.c index a9bc34a5e75..f1969bf4491 100644 --- a/src/gallium/drivers/radeonsi/si_shader_nir.c +++ b/src/gallium/drivers/radeonsi/si_shader_nir.c @@ -1005,38 +1005,6 @@ static void declare_nir_input_vs(struct si_shader_context *ctx, si_llvm_load_input_vs(ctx, input_index, out); } -LLVMValueRef -si_nir_lookup_interp_param(struct ac_shader_abi *abi, - enum glsl_interp_mode interp, unsigned location) -{ - struct si_shader_context *ctx = si_shader_context_from_abi(abi); - - switch (interp) { - case INTERP_MODE_FLAT: - return NULL; - case INTERP_MODE_SMOOTH: - case INTERP_MODE_NONE: - if (location == INTERP_CENTER) - return ac_get_arg(&ctx->ac, ctx->args.persp_center); - else if (location == INTERP_CENTROID) - return ctx->abi.persp_centroid; - else if (location == INTERP_SAMPLE) - return ac_get_arg(&ctx->ac, ctx->args.persp_sample); - break; - case INTERP_MODE_NOPERSPECTIVE: - if (location == INTERP_CENTER) - return ac_get_arg(&ctx->ac, ctx->args.linear_center); - else if (location == INTERP_CENTROID) - return ac_get_arg(&ctx->ac, ctx->args.linear_centroid); - else if (location == INTERP_SAMPLE) - return ac_get_arg(&ctx->ac, ctx->args.linear_sample); - break; - default: - assert(!"Unhandled interpolation mode."); - } - return NULL; -} - static LLVMValueRef si_nir_load_sampler_desc(struct ac_shader_abi *abi, unsigned descriptor_set, unsigned base_index, |