diff options
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_arit.c | 143 | ||||
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_const.c | 8 | ||||
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_logic.c | 100 | ||||
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 592 | ||||
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_type.h | 50 |
5 files changed, 601 insertions, 292 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_arit.c b/src/gallium/auxiliary/gallivm/lp_bld_arit.c index 32f9e5201c5..e2c67883972 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_arit.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_arit.c @@ -644,13 +644,26 @@ lp_build_abs(struct lp_build_context *bld, if(type.floating) { /* Mask out the sign bit */ - LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); - unsigned long long absMask = ~(1ULL << (type.width - 1)); - LLVMValueRef mask = lp_build_int_const_scalar(type, ((unsigned long long) absMask)); - a = LLVMBuildBitCast(bld->builder, a, int_vec_type, ""); - a = LLVMBuildAnd(bld->builder, a, mask, ""); - a = LLVMBuildBitCast(bld->builder, a, vec_type, ""); - return a; + if (type.length == 1) { + LLVMTypeRef int_type = LLVMIntType(type.width); + LLVMTypeRef float_type = LLVMFloatType(); + unsigned long long absMask = ~(1ULL << (type.width - 1)); + LLVMValueRef mask = LLVMConstInt(int_type, absMask, 0); + a = LLVMBuildBitCast(bld->builder, a, int_type, ""); + a = LLVMBuildAnd(bld->builder, a, mask, ""); + a = LLVMBuildBitCast(bld->builder, a, float_type, ""); + return a; + } + else { + /* vector of floats */ + LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); + unsigned long long absMask = ~(1ULL << (type.width - 1)); + LLVMValueRef mask = lp_build_int_const_scalar(type, ((unsigned long long) absMask)); + a = LLVMBuildBitCast(bld->builder, a, int_vec_type, ""); + a = LLVMBuildAnd(bld->builder, a, mask, ""); + a = LLVMBuildBitCast(bld->builder, a, vec_type, ""); + return a; + } } if(type.width*type.length == 128 && util_cpu_caps.has_ssse3) { @@ -753,7 +766,7 @@ lp_build_set_sign(struct lp_build_context *bld, /** - * Convert vector of int to vector of float. + * Convert vector of (or scalar) int to vector of (or scalar) float. */ LLVMValueRef lp_build_int_to_float(struct lp_build_context *bld, @@ -764,7 +777,11 @@ lp_build_int_to_float(struct lp_build_context *bld, assert(type.floating); /*assert(lp_check_value(type, a));*/ - { + if (type.length == 1) { + LLVMTypeRef float_type = LLVMFloatType(); + return LLVMBuildSIToFP(bld->builder, a, float_type, ""); + } + else { LLVMTypeRef vec_type = lp_build_vec_type(type); /*LLVMTypeRef int_vec_type = lp_build_int_vec_type(type);*/ LLVMValueRef res; @@ -921,12 +938,18 @@ lp_build_itrunc(struct lp_build_context *bld, LLVMValueRef a) { const struct lp_type type = bld->type; - LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); assert(type.floating); - assert(lp_check_value(type, a)); - return LLVMBuildFPToSI(bld->builder, a, int_vec_type, ""); + if (type.length == 1) { + LLVMTypeRef int_type = LLVMIntType(type.width); + return LLVMBuildFPTrunc(bld->builder, a, int_type, ""); + } + else { + LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); + assert(lp_check_value(type, a)); + return LLVMBuildFPToSI(bld->builder, a, int_vec_type, ""); + } } @@ -939,6 +962,15 @@ lp_build_iround(struct lp_build_context *bld, LLVMValueRef res; assert(type.floating); + + if (type.length == 1) { + /* scalar float to int */ + LLVMTypeRef int_type = LLVMIntType(type.width); + /* XXX we want rounding here! */ + res = LLVMBuildFPToSI(bld->builder, a, int_type, ""); + return res; + } + assert(lp_check_value(type, a)); if(util_cpu_caps.has_sse4_1) { @@ -1207,6 +1239,7 @@ lp_build_polynomial(struct lp_build_context *bld, unsigned num_coeffs) { const struct lp_type type = bld->type; + LLVMTypeRef float_type = LLVMFloatType(); LLVMValueRef res = NULL; unsigned i; @@ -1216,7 +1249,13 @@ lp_build_polynomial(struct lp_build_context *bld, __FUNCTION__); for (i = num_coeffs; i--; ) { - LLVMValueRef coeff = lp_build_const_scalar(type, coeffs[i]); + LLVMValueRef coeff; + + if (type.length == 1) + coeff = LLVMConstReal(float_type, coeffs[i]); + else + coeff = lp_build_const_scalar(type, coeffs[i]); + if(res) res = lp_build_add(bld, coeff, lp_build_mul(bld, x, res)); else @@ -1410,11 +1449,87 @@ lp_build_log2_approx(struct lp_build_context *bld, } +/** scalar version of above function */ +static void +lp_build_float_log2_approx(struct lp_build_context *bld, + LLVMValueRef x, + LLVMValueRef *p_exp, + LLVMValueRef *p_floor_log2, + LLVMValueRef *p_log2) +{ + const struct lp_type type = bld->type; + LLVMTypeRef float_type = LLVMFloatType(); + LLVMTypeRef int_type = LLVMIntType(type.width); + + LLVMValueRef expmask = LLVMConstInt(int_type, 0x7f800000, 0); + LLVMValueRef mantmask = LLVMConstInt(int_type, 0x007fffff, 0); + LLVMValueRef one = LLVMConstBitCast(bld->one, int_type); + + LLVMValueRef i = NULL; + LLVMValueRef exp = NULL; + LLVMValueRef mant = NULL; + LLVMValueRef logexp = NULL; + LLVMValueRef logmant = NULL; + LLVMValueRef res = NULL; + + if(p_exp || p_floor_log2 || p_log2) { + /* TODO: optimize the constant case */ + if(LLVMIsConstant(x)) + debug_printf("%s: inefficient/imprecise constant arithmetic\n", + __FUNCTION__); + + assert(type.floating && type.width == 32); + + i = LLVMBuildBitCast(bld->builder, x, int_type, ""); + + /* exp = (float) exponent(x) */ + exp = LLVMBuildAnd(bld->builder, i, expmask, ""); + } + + if(p_floor_log2 || p_log2) { + LLVMValueRef c23 = LLVMConstInt(int_type, 23, 0); + LLVMValueRef c127 = LLVMConstInt(int_type, 127, 0); + logexp = LLVMBuildLShr(bld->builder, exp, c23, ""); + logexp = LLVMBuildSub(bld->builder, logexp, c127, ""); + logexp = LLVMBuildSIToFP(bld->builder, logexp, float_type, ""); + } + + if(p_log2) { + /* mant = (float) mantissa(x) */ + mant = LLVMBuildAnd(bld->builder, i, mantmask, ""); + mant = LLVMBuildOr(bld->builder, mant, one, ""); + mant = LLVMBuildBitCast(bld->builder, mant, float_type, ""); + + logmant = lp_build_polynomial(bld, mant, lp_build_log2_polynomial, + Elements(lp_build_log2_polynomial)); + + /* This effectively increases the polynomial degree by one, but ensures that log2(1) == 0*/ + logmant = LLVMBuildMul(bld->builder, logmant, LLVMBuildSub(bld->builder, mant, bld->one, ""), ""); + + res = LLVMBuildAdd(bld->builder, logmant, logexp, ""); + } + + if(p_exp) + *p_exp = exp; + + if(p_floor_log2) + *p_floor_log2 = logexp; + + if(p_log2) + *p_log2 = res; +} + + LLVMValueRef lp_build_log2(struct lp_build_context *bld, LLVMValueRef x) { LLVMValueRef res; - lp_build_log2_approx(bld, x, NULL, NULL, &res); + if (bld->type.length == 1) { + lp_build_float_log2_approx(bld, x, NULL, NULL, &res); + } + else { + lp_build_log2_approx(bld, x, NULL, NULL, &res); + } return res; } diff --git a/src/gallium/auxiliary/gallivm/lp_bld_const.c b/src/gallium/auxiliary/gallivm/lp_bld_const.c index c8eaa8c3940..53447757e8e 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_const.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_const.c @@ -264,10 +264,16 @@ lp_build_one(struct lp_type type) for(i = 1; i < type.length; ++i) elems[i] = elems[0]; - return LLVMConstVector(elems, type.length); + if (type.length == 1) + return elems[0]; + else + return LLVMConstVector(elems, type.length); } +/** + * Build constant-valued vector from a scalar value. + */ LLVMValueRef lp_build_const_scalar(struct lp_type type, double val) diff --git a/src/gallium/auxiliary/gallivm/lp_bld_logic.c b/src/gallium/auxiliary/gallivm/lp_bld_logic.c index 2726747eaea..7c585fda788 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_logic.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_logic.c @@ -198,7 +198,7 @@ lp_build_compare(LLVMBuilderRef builder, return res; } - } + } /* if (type.width * type.length == 128) */ #endif if(type.floating) { @@ -238,20 +238,25 @@ lp_build_compare(LLVMBuilderRef builder, cond = LLVMBuildFCmp(builder, op, a, b, ""); res = LLVMBuildSelect(builder, cond, ones, zeros, ""); #else - debug_printf("%s: warning: using slow element-wise vector comparison\n", - __FUNCTION__); res = LLVMGetUndef(int_vec_type); - for(i = 0; i < type.length; ++i) { - LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); - cond = LLVMBuildFCmp(builder, op, - LLVMBuildExtractElement(builder, a, index, ""), - LLVMBuildExtractElement(builder, b, index, ""), - ""); - cond = LLVMBuildSelect(builder, cond, - LLVMConstExtractElement(ones, index), - LLVMConstExtractElement(zeros, index), - ""); - res = LLVMBuildInsertElement(builder, res, cond, index, ""); + if (type.length == 1) { + res = LLVMBuildFCmp(builder, op, a, b, ""); + } + else { + debug_printf("%s: warning: using slow element-wise float" + " vector comparison\n", __FUNCTION__); + for (i = 0; i < type.length; ++i) { + LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); + cond = LLVMBuildFCmp(builder, op, + LLVMBuildExtractElement(builder, a, index, ""), + LLVMBuildExtractElement(builder, b, index, ""), + ""); + cond = LLVMBuildSelect(builder, cond, + LLVMConstExtractElement(ones, index), + LLVMConstExtractElement(zeros, index), + ""); + res = LLVMBuildInsertElement(builder, res, cond, index, ""); + } } #endif } @@ -286,20 +291,26 @@ lp_build_compare(LLVMBuilderRef builder, cond = LLVMBuildICmp(builder, op, a, b, ""); res = LLVMBuildSelect(builder, cond, ones, zeros, ""); #else - debug_printf("%s: warning: using slow element-wise int vector comparison\n", - __FUNCTION__); res = LLVMGetUndef(int_vec_type); - for(i = 0; i < type.length; ++i) { - LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); - cond = LLVMBuildICmp(builder, op, - LLVMBuildExtractElement(builder, a, index, ""), - LLVMBuildExtractElement(builder, b, index, ""), - ""); - cond = LLVMBuildSelect(builder, cond, - LLVMConstExtractElement(ones, index), - LLVMConstExtractElement(zeros, index), - ""); - res = LLVMBuildInsertElement(builder, res, cond, index, ""); + if (type.length == 1) { + res = LLVMBuildICmp(builder, op, a, b, ""); + } + else { + debug_printf("%s: warning: using slow element-wise int" + " vector comparison\n", __FUNCTION__); + + for(i = 0; i < type.length; ++i) { + LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); + cond = LLVMBuildICmp(builder, op, + LLVMBuildExtractElement(builder, a, index, ""), + LLVMBuildExtractElement(builder, b, index, ""), + ""); + cond = LLVMBuildSelect(builder, cond, + LLVMConstExtractElement(ones, index), + LLVMConstExtractElement(zeros, index), + ""); + res = LLVMBuildInsertElement(builder, res, cond, index, ""); + } } #endif } @@ -339,26 +350,31 @@ lp_build_select(struct lp_build_context *bld, if(a == b) return a; - if(type.floating) { - LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); - a = LLVMBuildBitCast(bld->builder, a, int_vec_type, ""); - b = LLVMBuildBitCast(bld->builder, b, int_vec_type, ""); + if (type.length == 1) { + res = LLVMBuildSelect(bld->builder, mask, a, b, ""); } + else { + if(type.floating) { + LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); + a = LLVMBuildBitCast(bld->builder, a, int_vec_type, ""); + b = LLVMBuildBitCast(bld->builder, b, int_vec_type, ""); + } - a = LLVMBuildAnd(bld->builder, a, mask, ""); + a = LLVMBuildAnd(bld->builder, a, mask, ""); - /* This often gets translated to PANDN, but sometimes the NOT is - * pre-computed and stored in another constant. The best strategy depends - * on available registers, so it is not a big deal -- hopefully LLVM does - * the right decision attending the rest of the program. - */ - b = LLVMBuildAnd(bld->builder, b, LLVMBuildNot(bld->builder, mask, ""), ""); + /* This often gets translated to PANDN, but sometimes the NOT is + * pre-computed and stored in another constant. The best strategy depends + * on available registers, so it is not a big deal -- hopefully LLVM does + * the right decision attending the rest of the program. + */ + b = LLVMBuildAnd(bld->builder, b, LLVMBuildNot(bld->builder, mask, ""), ""); - res = LLVMBuildOr(bld->builder, a, b, ""); + res = LLVMBuildOr(bld->builder, a, b, ""); - if(type.floating) { - LLVMTypeRef vec_type = lp_build_vec_type(type); - res = LLVMBuildBitCast(bld->builder, res, vec_type, ""); + if(type.floating) { + LLVMTypeRef vec_type = lp_build_vec_type(type); + res = LLVMBuildBitCast(bld->builder, res, vec_type, ""); + } } return res; diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c index 1dca29cdd58..a965d394f44 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -65,6 +65,14 @@ struct lp_build_sample_context const struct util_format_description *format_desc; + /** regular scalar float type */ + struct lp_type float_type; + struct lp_build_context float_bld; + + /** regular scalar float type */ + struct lp_type int_type; + struct lp_build_context int_bld; + /** Incoming coordinates type and build context */ struct lp_type coord_type; struct lp_build_context coord_bld; @@ -108,6 +116,27 @@ wrap_mode_uses_border_color(unsigned mode) } +static LLVMValueRef +lp_build_get_mipmap_level(struct lp_build_sample_context *bld, + LLVMValueRef data_array, LLVMValueRef level) +{ + LLVMValueRef indexes[2], data_ptr; + indexes[0] = LLVMConstInt(LLVMInt32Type(), 0, 0); + indexes[1] = level; + data_ptr = LLVMBuildGEP(bld->builder, data_array, indexes, 2, ""); + data_ptr = LLVMBuildLoad(bld->builder, data_ptr, ""); + return data_ptr; +} + + +static LLVMValueRef +lp_build_get_const_mipmap_level(struct lp_build_sample_context *bld, + LLVMValueRef data_array, int level) +{ + LLVMValueRef lvl = LLVMConstInt(LLVMInt32Type(), level, 0); + return lp_build_get_mipmap_level(bld, data_array, lvl); +} + /** * Gen code to fetch a texel from a texture at int coords (x, y). @@ -124,14 +153,13 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, LLVMValueRef x, LLVMValueRef y, LLVMValueRef y_stride, - LLVMValueRef data_array, + LLVMValueRef data_ptr, LLVMValueRef *texel) { struct lp_build_context *int_coord_bld = &bld->int_coord_bld; LLVMValueRef offset; LLVMValueRef packed; LLVMValueRef use_border = NULL; - LLVMValueRef data_ptr; /* use_border = x < 0 || x >= width || y < 0 || y >= height */ if (wrap_mode_uses_border_color(bld->static_state->wrap_s)) { @@ -154,16 +182,6 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, } } - /* XXX always use mipmap level 0 for now */ - { - const int level = 0; - LLVMValueRef indexes[2]; - indexes[0] = LLVMConstInt(LLVMInt32Type(), 0, 0); - indexes[1] = LLVMConstInt(LLVMInt32Type(), level, 0); - data_ptr = LLVMBuildGEP(bld->builder, data_array, indexes, 2, ""); - data_ptr = LLVMBuildLoad(bld->builder, data_ptr, ""); - } - /* * Note: if we find an app which frequently samples the texture border * we might want to implement a true conditional here to avoid sampling @@ -233,17 +251,8 @@ lp_build_sample_packed(struct lp_build_sample_context *bld, assert(bld->format_desc->block.height == 1); assert(bld->format_desc->block.bits <= bld->texel_type.width); - /* XXX always use mipmap level 0 for now */ - { - const int level = 0; - LLVMValueRef indexes[2]; - /* get data_ptr[level] */ - indexes[0] = LLVMConstInt(LLVMInt32Type(), 0, 0); - indexes[1] = LLVMConstInt(LLVMInt32Type(), level, 0); - data_ptr = LLVMBuildGEP(bld->builder, data_array, indexes, 2, ""); - /* load texture base address */ - data_ptr = LLVMBuildLoad(bld->builder, data_ptr, ""); - } + /* get pointer to mipmap level 0 data */ + data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0); return lp_build_gather(bld->builder, bld->texel_type.length, @@ -733,7 +742,210 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, /** - * Sample 2D texture with nearest filtering. + * Codegen equivalent for u_minify(). + * Return max(1, base_size >> level); + */ +static LLVMValueRef +lp_build_minify(struct lp_build_sample_context *bld, + LLVMValueRef base_size, + LLVMValueRef level) +{ + LLVMValueRef size = LLVMBuildAShr(bld->builder, base_size, level, "minify"); + size = lp_build_max(&bld->int_coord_bld, size, bld->int_coord_bld.one); + return size; +} + + +static int +texture_dims(enum pipe_texture_target tex) +{ + switch (tex) { + case PIPE_TEXTURE_1D: + return 1; + case PIPE_TEXTURE_2D: + case PIPE_TEXTURE_CUBE: + return 2; + case PIPE_TEXTURE_3D: + return 3; + default: + assert(0 && "bad texture target in texture_dims()"); + return 2; + } +} + + +/** + * Generate code to compute texture level of detail (lambda). + * \param s vector of texcoord s values + * \param t vector of texcoord t values + * \param r vector of texcoord r values + * \param width scalar int texture width + * \param height scalar int texture height + * \param depth scalar int texture depth + */ +static LLVMValueRef +lp_build_lod_selector(struct lp_build_sample_context *bld, + LLVMValueRef s, + LLVMValueRef t, + LLVMValueRef r, + LLVMValueRef width, + LLVMValueRef height, + LLVMValueRef depth) + +{ + const int dims = texture_dims(bld->static_state->target); + struct lp_build_context *coord_bld = &bld->coord_bld; + struct lp_build_context *float_bld = &bld->float_bld; + LLVMValueRef lod_bias = LLVMConstReal(LLVMFloatType(), bld->static_state->lod_bias); + LLVMValueRef min_lod = LLVMConstReal(LLVMFloatType(), bld->static_state->min_lod); + LLVMValueRef max_lod = LLVMConstReal(LLVMFloatType(), bld->static_state->max_lod); + + LLVMValueRef index0 = LLVMConstInt(LLVMInt32Type(), 0, 0); + LLVMValueRef index1 = LLVMConstInt(LLVMInt32Type(), 1, 0); + LLVMValueRef index2 = LLVMConstInt(LLVMInt32Type(), 2, 0); + + LLVMValueRef s0, s1, s2; + LLVMValueRef t0, t1, t2; + LLVMValueRef r0, r1, r2; + LLVMValueRef dsdx, dsdy, dtdx, dtdy, drdx, drdy; + LLVMValueRef rho, lod; + + /* + * dsdx = abs(s[1] - s[0]); + * dsdy = abs(s[2] - s[0]); + * dtdx = abs(t[1] - t[0]); + * dtdy = abs(t[2] - t[0]); + * drdx = abs(r[1] - r[0]); + * drdy = abs(r[2] - r[0]); + * XXX we're assuming a four-element quad in 2x2 layout here. + */ + s0 = LLVMBuildExtractElement(bld->builder, s, index0, "s0"); + s1 = LLVMBuildExtractElement(bld->builder, s, index1, "s1"); + s2 = LLVMBuildExtractElement(bld->builder, s, index2, "s2"); + dsdx = LLVMBuildSub(bld->builder, s1, s0, ""); + dsdx = lp_build_abs(float_bld, dsdx); + dsdy = LLVMBuildSub(bld->builder, s2, s0, ""); + dsdy = lp_build_abs(float_bld, dsdy); + if (dims > 1) { + t0 = LLVMBuildExtractElement(bld->builder, t, index0, "t0"); + t1 = LLVMBuildExtractElement(bld->builder, t, index1, "t1"); + t2 = LLVMBuildExtractElement(bld->builder, t, index2, "t2"); + dtdx = LLVMBuildSub(bld->builder, t1, t0, ""); + dtdx = lp_build_abs(float_bld, dtdx); + dtdy = LLVMBuildSub(bld->builder, t2, t0, ""); + dtdy = lp_build_abs(float_bld, dtdy); + if (dims > 2) { + r0 = LLVMBuildExtractElement(bld->builder, r, index0, "r0"); + r1 = LLVMBuildExtractElement(bld->builder, r, index1, "r1"); + r2 = LLVMBuildExtractElement(bld->builder, r, index2, "r2"); + drdx = LLVMBuildSub(bld->builder, r1, r0, ""); + drdx = lp_build_abs(float_bld, drdx); + drdy = LLVMBuildSub(bld->builder, r2, r0, ""); + drdy = lp_build_abs(float_bld, drdy); + } + } + + /* Compute rho = max of all partial derivatives scaled by texture size. + * XXX this could be vectorized somewhat + */ + rho = LLVMBuildMul(bld->builder, + lp_build_max(float_bld, dsdx, dsdy), + lp_build_int_to_float(float_bld, width), ""); + if (dims > 1) { + LLVMValueRef max; + max = LLVMBuildMul(bld->builder, + lp_build_max(float_bld, dtdx, dtdy), + lp_build_int_to_float(float_bld, height), ""); + rho = lp_build_max(float_bld, rho, max); + if (dims > 2) { + max = LLVMBuildMul(bld->builder, + lp_build_max(float_bld, drdx, drdy), + lp_build_int_to_float(float_bld, depth), ""); + rho = lp_build_max(float_bld, rho, max); + } + } + + /* compute lod = log2(rho) */ + lod = lp_build_log2(float_bld, rho); + + /* add lod bias */ + lod = LLVMBuildAdd(bld->builder, lod, lod_bias, "LOD bias"); + + /* clamp lod */ + lod = lp_build_clamp(float_bld, lod, min_lod, max_lod); + + return lod; +} + + +/** + * For PIPE_TEX_MIPFILTER_NEAREST, convert float LOD to integer + * mipmap level index. + * Note: this is all scalar code. + * \param lod scalar float texture level of detail + * \param level_out returns integer + */ +static void +lp_build_nearest_mip_level(struct lp_build_sample_context *bld, + unsigned unit, + LLVMValueRef lod, + LLVMValueRef *level_out) +{ + struct lp_build_context *float_bld = &bld->float_bld; + struct lp_build_context *int_bld = &bld->int_bld; + LLVMValueRef last_level, level; + + LLVMValueRef zero = LLVMConstInt(LLVMInt32Type(), 0, 0); + + last_level = bld->dynamic_state->last_level(bld->dynamic_state, + bld->builder, unit); + + /* convert float lod to integer */ + level = lp_build_iround(float_bld, lod); + + /* clamp level to legal range of levels */ + *level_out = lp_build_clamp(int_bld, level, zero, last_level); +} + + +/** + * For PIPE_TEX_MIPFILTER_LINEAR, convert float LOD to integer to + * two (adjacent) mipmap level indexes. Later, we'll sample from those + * two mipmap levels and interpolate between them. + */ +static void +lp_build_linear_mip_levels(struct lp_build_sample_context *bld, + unsigned unit, + LLVMValueRef lod, + LLVMValueRef *level0_out, + LLVMValueRef *level1_out, + LLVMValueRef *weight_out) +{ + struct lp_build_context *coord_bld = &bld->coord_bld; + struct lp_build_context *int_coord_bld = &bld->int_coord_bld; + LLVMValueRef last_level, level; + + last_level = bld->dynamic_state->last_level(bld->dynamic_state, + bld->builder, unit); + + /* convert float lod to integer */ + level = lp_build_ifloor(coord_bld, lod); + + /* compute level 0 and clamp to legal range of levels */ + *level0_out = lp_build_clamp(int_coord_bld, level, + int_coord_bld->zero, + last_level); + /* compute level 1 and clamp to legal range of levels */ + *level1_out = lp_build_add(int_coord_bld, *level0_out, int_coord_bld->one); + *level1_out = lp_build_min(int_coord_bld, *level1_out, int_coord_bld->zero); + + *weight_out = lp_build_fract(coord_bld, lod); +} + + + +/** + * Sample 2D texture with nearest filtering, no mipmapping. */ static void lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld, @@ -746,6 +958,7 @@ lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld, LLVMValueRef *texel) { LLVMValueRef x, y; + LLVMValueRef data_ptr; x = lp_build_sample_wrap_nearest(bld, s, width, bld->static_state->pot_width, @@ -757,7 +970,63 @@ lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld, lp_build_name(x, "tex.x.wrapped"); lp_build_name(y, "tex.y.wrapped"); - lp_build_sample_texel_soa(bld, width, height, x, y, stride, data_array, texel); + /* get pointer to mipmap level 0 data */ + data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0); + + lp_build_sample_texel_soa(bld, width, height, x, y, stride, data_ptr, texel); +} + + +/** + * Sample 2D texture with nearest filtering, nearest mipmap. + */ +static void +lp_build_sample_2d_nearest_mip_nearest_soa(struct lp_build_sample_context *bld, + unsigned unit, + LLVMValueRef s, + LLVMValueRef t, + LLVMValueRef width, + LLVMValueRef height, + LLVMValueRef width_vec, + LLVMValueRef height_vec, + LLVMValueRef stride, + LLVMValueRef data_array, + LLVMValueRef *texel) +{ + LLVMValueRef x, y; + LLVMValueRef lod, ilevel, ilevel_vec; + LLVMValueRef data_ptr; + + /* compute float LOD */ + lod = lp_build_lod_selector(bld, s, t, NULL, width, height, NULL); + + /* convert LOD to int */ + lp_build_nearest_mip_level(bld, unit, lod, &ilevel); + + ilevel_vec = lp_build_broadcast_scalar(&bld->int_coord_bld, ilevel); + + /* compute width_vec, height at mipmap level 'ilevel' */ + width_vec = lp_build_minify(bld, width_vec, ilevel_vec); + height_vec = lp_build_minify(bld, height_vec, ilevel_vec); + stride = lp_build_minify(bld, stride, ilevel_vec); + + x = lp_build_sample_wrap_nearest(bld, s, width_vec, + bld->static_state->pot_width, + bld->static_state->wrap_s); + y = lp_build_sample_wrap_nearest(bld, t, height_vec, + bld->static_state->pot_height, + bld->static_state->wrap_t); + + lp_build_name(x, "tex.x.wrapped"); + lp_build_name(y, "tex.y.wrapped"); + + /* get pointer to mipmap level [ilevel] data */ + if (0) + data_ptr = lp_build_get_mipmap_level(bld, data_array, ilevel); + else + data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0); + + lp_build_sample_texel_soa(bld, width_vec, height_vec, x, y, stride, data_ptr, texel); } @@ -779,6 +1048,7 @@ lp_build_sample_2d_linear_soa(struct lp_build_sample_context *bld, LLVMValueRef x0, x1; LLVMValueRef y0, y1; LLVMValueRef neighbors[2][2][4]; + LLVMValueRef data_ptr; unsigned chan; lp_build_sample_wrap_linear(bld, s, width, bld->static_state->pot_width, @@ -786,10 +1056,13 @@ lp_build_sample_2d_linear_soa(struct lp_build_sample_context *bld, lp_build_sample_wrap_linear(bld, t, height, bld->static_state->pot_height, bld->static_state->wrap_t, &y0, &y1, &t_fpart); - lp_build_sample_texel_soa(bld, width, height, x0, y0, stride, data_array, neighbors[0][0]); - lp_build_sample_texel_soa(bld, width, height, x1, y0, stride, data_array, neighbors[0][1]); - lp_build_sample_texel_soa(bld, width, height, x0, y1, stride, data_array, neighbors[1][0]); - lp_build_sample_texel_soa(bld, width, height, x1, y1, stride, data_array, neighbors[1][1]); + /* get pointer to mipmap level 0 data */ + data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0); + + lp_build_sample_texel_soa(bld, width, height, x0, y0, stride, data_ptr, neighbors[0][0]); + lp_build_sample_texel_soa(bld, width, height, x1, y0, stride, data_ptr, neighbors[0][1]); + lp_build_sample_texel_soa(bld, width, height, x0, y1, stride, data_ptr, neighbors[1][0]); + lp_build_sample_texel_soa(bld, width, height, x1, y1, stride, data_ptr, neighbors[1][1]); /* TODO: Don't interpolate missing channels */ for(chan = 0; chan < 4; ++chan) { @@ -857,7 +1130,7 @@ lp_build_sample_2d_linear_aos(struct lp_build_sample_context *bld, LLVMValueRef packed, packed_lo, packed_hi; LLVMValueRef unswizzled[4]; - lp_build_context_init(&i32, builder, lp_type_int(32)); + lp_build_context_init(&i32, builder, lp_type_int_vec(32)); lp_build_context_init(&h16, builder, lp_type_ufixed(16)); lp_build_context_init(&u8n, builder, lp_type_unorm(8)); @@ -1066,194 +1339,11 @@ lp_build_sample_compare(struct lp_build_sample_context *bld, } -static int -texture_dims(enum pipe_texture_target tex) -{ - switch (tex) { - case PIPE_TEXTURE_1D: - return 1; - case PIPE_TEXTURE_2D: - case PIPE_TEXTURE_CUBE: - return 2; - case PIPE_TEXTURE_3D: - return 3; - default: - assert(0 && "bad texture target in texture_dims()"); - return 2; - } -} - - -/** - * Generate code to compute texture level of detail (lambda). - * \param s vector of texcoord s values - * \param t vector of texcoord t values - * \param r vector of texcoord r values - * \param width scalar int texture width - * \param height scalar int texture height - * \param depth scalar int texture depth - */ -static LLVMValueRef -lp_build_lod_selector(struct lp_build_sample_context *bld, - LLVMValueRef s, - LLVMValueRef t, - LLVMValueRef r, - LLVMValueRef width, - LLVMValueRef height, - LLVMValueRef depth) - -{ - const int dims = texture_dims(bld->static_state->target); - struct lp_build_context *coord_bld = &bld->coord_bld; - - LLVMValueRef lod_bias = lp_build_const_scalar(bld->coord_bld.type, - bld->static_state->lod_bias); - LLVMValueRef min_lod = lp_build_const_scalar(bld->coord_bld.type, - bld->static_state->min_lod); - LLVMValueRef max_lod = lp_build_const_scalar(bld->coord_bld.type, - bld->static_state->max_lod); - - LLVMValueRef index0 = LLVMConstInt(LLVMInt32Type(), 0, 0); - LLVMValueRef index1 = LLVMConstInt(LLVMInt32Type(), 1, 0); - LLVMValueRef index2 = LLVMConstInt(LLVMInt32Type(), 2, 0); - - LLVMValueRef s0, s1, s2; - LLVMValueRef t0, t1, t2; - LLVMValueRef r0, r1, r2; - LLVMValueRef dsdx, dsdy, dtdx, dtdy, drdx, drdy; - LLVMValueRef rho, lod; - - /* - * dsdx = abs(s[1] - s[0]); - * dsdy = abs(s[2] - s[0]); - * dtdx = abs(t[1] - t[0]); - * dtdy = abs(t[2] - t[0]); - * drdx = abs(r[1] - r[0]); - * drdy = abs(r[2] - r[0]); - * XXX we're assuming a four-element quad in 2x2 layout here. - */ - s0 = LLVMBuildExtractElement(bld->builder, s, index0, "s0"); - s1 = LLVMBuildExtractElement(bld->builder, s, index1, "s1"); - s2 = LLVMBuildExtractElement(bld->builder, s, index2, "s2"); - dsdx = lp_build_abs(coord_bld, lp_build_sub(coord_bld, s1, s0)); - dsdy = lp_build_abs(coord_bld, lp_build_sub(coord_bld, s2, s0)); - if (dims > 1) { - t0 = LLVMBuildExtractElement(bld->builder, t, index0, "t0"); - t1 = LLVMBuildExtractElement(bld->builder, t, index1, "t1"); - t2 = LLVMBuildExtractElement(bld->builder, t, index2, "t2"); - dtdx = lp_build_abs(coord_bld, lp_build_sub(coord_bld, t1, t0)); - dtdy = lp_build_abs(coord_bld, lp_build_sub(coord_bld, t2, t0)); - if (dims > 2) { - r0 = LLVMBuildExtractElement(bld->builder, r, index0, "r0"); - r1 = LLVMBuildExtractElement(bld->builder, r, index1, "r1"); - r2 = LLVMBuildExtractElement(bld->builder, r, index2, "r2"); - drdx = lp_build_abs(coord_bld, lp_build_sub(coord_bld, r1, r0)); - drdy = lp_build_abs(coord_bld, lp_build_sub(coord_bld, r2, r0)); - } - } - - /* Compute rho = max of all partial derivatives scaled by texture size. - * XXX this can be vectorized somewhat - */ - rho = lp_build_mul(coord_bld, - lp_build_max(coord_bld, dsdx, dsdy), - lp_build_int_to_float(coord_bld, width)); - if (dims > 1) { - LLVMValueRef max; - max = lp_build_mul(coord_bld, - lp_build_max(coord_bld, dtdx, dtdy), - lp_build_int_to_float(coord_bld, height)); - rho = lp_build_max(coord_bld, rho, max); - if (dims > 2) { - max = lp_build_mul(coord_bld, - lp_build_max(coord_bld, drdx, drdy), - lp_build_int_to_float(coord_bld, depth)); - rho = lp_build_max(coord_bld, rho, max); - } - } - - /* compute lod = log2(rho) */ - lod = lp_build_log2(coord_bld, rho); - - /* add lod bias */ - lod = lp_build_add(coord_bld, lod, lod_bias); - - /* clamp lod */ - lod = lp_build_clamp(coord_bld, lod, min_lod, max_lod); - - return lod; -} - - -/** - * For PIPE_TEX_MIPFILTER_NEAREST, convert float LOD to integer - * mipmap level index. - * \param lod scalar float texture level of detail - * \param level_out returns integer - */ -static void -lp_build_nearest_mip_level(struct lp_build_sample_context *bld, - unsigned unit, - LLVMValueRef lod, - LLVMValueRef *level_out) -{ - struct lp_build_context *coord_bld = &bld->coord_bld; - struct lp_build_context *int_coord_bld = &bld->int_coord_bld; - LLVMValueRef last_level, level; - - last_level = bld->dynamic_state->last_level(bld->dynamic_state, - bld->builder, unit); - - /* convert float lod to integer */ - level = lp_build_iround(coord_bld, lod); - - /* clamp level to legal range of levels */ - *level_out = lp_build_clamp(int_coord_bld, level, - int_coord_bld->zero, - last_level); -} - - -/** - * For PIPE_TEX_MIPFILTER_LINEAR, convert float LOD to integer to - * two (adjacent) mipmap level indexes. Later, we'll sample from those - * two mipmap levels and interpolate between them. - */ -static void -lp_build_linear_mip_levels(struct lp_build_sample_context *bld, - unsigned unit, - LLVMValueRef lod, - LLVMValueRef *level0_out, - LLVMValueRef *level1_out, - LLVMValueRef *weight_out) -{ - struct lp_build_context *coord_bld = &bld->coord_bld; - struct lp_build_context *int_coord_bld = &bld->int_coord_bld; - LLVMValueRef last_level, level; - - last_level = bld->dynamic_state->last_level(bld->dynamic_state, - bld->builder, unit); - - /* convert float lod to integer */ - level = lp_build_ifloor(coord_bld, lod); - - /* compute level 0 and clamp to legal range of levels */ - *level0_out = lp_build_clamp(int_coord_bld, level, - int_coord_bld->zero, - last_level); - /* compute level 1 and clamp to legal range of levels */ - *level1_out = lp_build_add(int_coord_bld, *level0_out, int_coord_bld->one); - *level1_out = lp_build_min(int_coord_bld, *level1_out, int_coord_bld->zero); - - *weight_out = lp_build_fract(coord_bld, lod); -} - - - /** * Build texture sampling code. * 'texel' will return a vector of four LLVMValueRefs corresponding to * R, G, B, A. + * \param type vector float type to use for coords, etc. */ void lp_build_sample_soa(LLVMBuilderRef builder, @@ -1267,17 +1357,19 @@ lp_build_sample_soa(LLVMBuilderRef builder, LLVMValueRef *texel) { struct lp_build_sample_context bld; - LLVMValueRef width; - LLVMValueRef height; - LLVMValueRef stride; + LLVMValueRef width, width_vec; + LLVMValueRef height, height_vec; + LLVMValueRef stride, stride_vec; LLVMValueRef data_array; LLVMValueRef s; LLVMValueRef t; LLVMValueRef r; + boolean done = FALSE; (void) lp_build_lod_selector; /* temporary to silence warning */ (void) lp_build_nearest_mip_level; (void) lp_build_linear_mip_levels; + (void) lp_build_minify; /* Setup our build context */ memset(&bld, 0, sizeof bld); @@ -1285,10 +1377,16 @@ lp_build_sample_soa(LLVMBuilderRef builder, bld.static_state = static_state; bld.dynamic_state = dynamic_state; bld.format_desc = util_format_description(static_state->format); + + bld.float_type = lp_type_float(32); + bld.int_type = lp_type_int(32); bld.coord_type = type; bld.uint_coord_type = lp_uint_type(type); bld.int_coord_type = lp_int_type(type); bld.texel_type = type; + + lp_build_context_init(&bld.float_bld, builder, bld.float_type); + lp_build_context_init(&bld.int_bld, builder, bld.int_type); lp_build_context_init(&bld.coord_bld, builder, bld.coord_type); lp_build_context_init(&bld.uint_coord_bld, builder, bld.uint_coord_type); lp_build_context_init(&bld.int_coord_bld, builder, bld.int_coord_type); @@ -1305,30 +1403,56 @@ lp_build_sample_soa(LLVMBuilderRef builder, t = coords[1]; r = coords[2]; - width = lp_build_broadcast_scalar(&bld.uint_coord_bld, width); - height = lp_build_broadcast_scalar(&bld.uint_coord_bld, height); - stride = lp_build_broadcast_scalar(&bld.uint_coord_bld, stride); + width_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, width); + height_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, height); + stride_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, stride); if(static_state->target == PIPE_TEXTURE_1D) t = bld.coord_bld.zero; - switch (static_state->min_img_filter) { - case PIPE_TEX_FILTER_NEAREST: - lp_build_sample_2d_nearest_soa(&bld, s, t, width, height, - stride, data_array, texel); + switch (static_state->min_mip_filter) { + case PIPE_TEX_MIPFILTER_NONE: break; - case PIPE_TEX_FILTER_LINEAR: - if(lp_format_is_rgba8(bld.format_desc) && - is_simple_wrap_mode(static_state->wrap_s) && - is_simple_wrap_mode(static_state->wrap_t)) - lp_build_sample_2d_linear_aos(&bld, s, t, width, height, - stride, data_array, texel); - else - lp_build_sample_2d_linear_soa(&bld, s, t, width, height, - stride, data_array, texel); + case PIPE_TEX_MIPFILTER_NEAREST: + + switch (static_state->min_img_filter) { + case PIPE_TEX_FILTER_NEAREST: + lp_build_sample_2d_nearest_mip_nearest_soa(&bld, unit, + s, t, + width, height, + width_vec, height_vec, + stride_vec, + data_array, texel); + done = TRUE; + break; + } + + break; + case PIPE_TEX_MIPFILTER_LINEAR: break; default: - assert(0); + assert(0 && "invalid mip filter"); + } + + if (!done) { + switch (static_state->min_img_filter) { + case PIPE_TEX_FILTER_NEAREST: + lp_build_sample_2d_nearest_soa(&bld, s, t, width_vec, height_vec, + stride_vec, data_array, texel); + break; + case PIPE_TEX_FILTER_LINEAR: + if(lp_format_is_rgba8(bld.format_desc) && + is_simple_wrap_mode(static_state->wrap_s) && + is_simple_wrap_mode(static_state->wrap_t)) + lp_build_sample_2d_linear_aos(&bld, s, t, width_vec, height_vec, + stride_vec, data_array, texel); + else + lp_build_sample_2d_linear_soa(&bld, s, t, width_vec, height_vec, + stride_vec, data_array, texel); + break; + default: + assert(0); + } } /* FIXME: respect static_state->min_mip_filter */; diff --git a/src/gallium/auxiliary/gallivm/lp_bld_type.h b/src/gallium/auxiliary/gallivm/lp_bld_type.h index 16946cc28a2..4daa904e633 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_type.h +++ b/src/gallium/auxiliary/gallivm/lp_bld_type.h @@ -103,7 +103,7 @@ struct lp_type { unsigned width:14; /** - * Vector length. + * Vector length. If length==1, this is a scalar (float/int) type. * * width*length should be a power of two greater or equal to eight. * @@ -139,6 +139,7 @@ struct lp_build_context }; +/** Create scalar float type */ static INLINE struct lp_type lp_type_float(unsigned width) { @@ -148,12 +149,29 @@ lp_type_float(unsigned width) res_type.floating = TRUE; res_type.sign = TRUE; res_type.width = width; + res_type.length = 1; + + return res_type; +} + + +/** Create vector of float type */ +static INLINE struct lp_type +lp_type_float_vec(unsigned width) +{ + struct lp_type res_type; + + memset(&res_type, 0, sizeof res_type); + res_type.floating = TRUE; + res_type.sign = TRUE; + res_type.width = width; res_type.length = LP_NATIVE_VECTOR_WIDTH / width; return res_type; } +/** Create scalar int type */ static INLINE struct lp_type lp_type_int(unsigned width) { @@ -162,12 +180,28 @@ lp_type_int(unsigned width) memset(&res_type, 0, sizeof res_type); res_type.sign = TRUE; res_type.width = width; + res_type.length = 1; + + return res_type; +} + + +/** Create vector int type */ +static INLINE struct lp_type +lp_type_int_vec(unsigned width) +{ + struct lp_type res_type; + + memset(&res_type, 0, sizeof res_type); + res_type.sign = TRUE; + res_type.width = width; res_type.length = LP_NATIVE_VECTOR_WIDTH / width; return res_type; } +/** Create scalar uint type */ static INLINE struct lp_type lp_type_uint(unsigned width) { @@ -175,6 +209,20 @@ lp_type_uint(unsigned width) memset(&res_type, 0, sizeof res_type); res_type.width = width; + res_type.length = 1; + + return res_type; +} + + +/** Create vector uint type */ +static INLINE struct lp_type +lp_type_uint_vec(unsigned width) +{ + struct lp_type res_type; + + memset(&res_type, 0, sizeof res_type); + res_type.width = width; res_type.length = LP_NATIVE_VECTOR_WIDTH / width; return res_type; |