/* * Copyright © 2012 Intel Corporation * * 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 * the rights to use, copy, modify, merge, publish, distribute, sublicense, * 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 NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS 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 #include "program/prog_instruction.h" #include "blorp_priv.h" #include "brw_compiler.h" #include "brw_nir.h" void blorp_init(struct blorp_context *blorp, void *driver_ctx, struct isl_device *isl_dev) { blorp->driver_ctx = driver_ctx; blorp->isl_dev = isl_dev; } void blorp_finish(struct blorp_context *blorp) { blorp->driver_ctx = NULL; } void blorp_batch_init(struct blorp_context *blorp, struct blorp_batch *batch, void *driver_batch, enum blorp_batch_flags flags) { batch->blorp = blorp; batch->driver_batch = driver_batch; batch->flags = flags; } void blorp_batch_finish(struct blorp_batch *batch) { batch->blorp = NULL; } void brw_blorp_surface_info_init(struct blorp_context *blorp, struct brw_blorp_surface_info *info, const struct blorp_surf *surf, unsigned int level, unsigned int layer, enum isl_format format, bool is_render_target) { info->enabled = true; if (format == ISL_FORMAT_UNSUPPORTED) format = surf->surf->format; if (format == ISL_FORMAT_R24_UNORM_X8_TYPELESS) { /* Unfortunately, ISL_FORMAT_R24_UNORM_X8_TYPELESS it isn't supported as * a render target, which would prevent us from blitting to 24-bit * depth. The miptree consists of 32 bits per pixel, arranged as 24-bit * depth values interleaved with 8 "don't care" bits. Since depth * values don't require any blending, it doesn't matter how we interpret * the bit pattern as long as we copy the right amount of data, so just * map it as 8-bit BGRA. */ format = ISL_FORMAT_B8G8R8A8_UNORM; } else if (surf->surf->usage & ISL_SURF_USAGE_STENCIL_BIT) { assert(surf->surf->format == ISL_FORMAT_R8_UINT); /* Prior to Broadwell, we can't render to R8_UINT */ if (blorp->isl_dev->info->gen < 8) format = ISL_FORMAT_R8_UNORM; } info->surf = *surf->surf; info->addr = surf->addr; info->aux_usage = surf->aux_usage; if (info->aux_usage != ISL_AUX_USAGE_NONE) { info->aux_surf = *surf->aux_surf; info->aux_addr = surf->aux_addr; } info->clear_color = surf->clear_color; info->view = (struct isl_view) { .usage = is_render_target ? ISL_SURF_USAGE_RENDER_TARGET_BIT : ISL_SURF_USAGE_TEXTURE_BIT, .format = format, .base_level = level, .levels = 1, .swizzle = ISL_SWIZZLE_IDENTITY, }; info->view.array_len = MAX2(info->surf.logical_level0_px.depth, info->surf.logical_level0_px.array_len); if (!is_render_target && (info->surf.dim == ISL_SURF_DIM_3D || info->surf.msaa_layout == ISL_MSAA_LAYOUT_ARRAY)) { /* 3-D textures don't support base_array layer and neither do 2-D * multisampled textures on IVB so we need to pass it through the * sampler in those cases. These are also two cases where we are * guaranteed that we won't be doing any funny surface hacks. */ info->view.base_array_layer = 0; info->z_offset = layer; } else { info->view.base_array_layer = layer; assert(info->view.array_len >= info->view.base_array_layer); info->view.array_len -= info->view.base_array_layer; info->z_offset = 0; } /* Sandy Bridge has a limit of a maximum of 512 layers for layered * rendering. */ if (is_render_target && blorp->isl_dev->info->gen == 6) info->view.array_len = MIN2(info->view.array_len, 512); } void blorp_params_init(struct blorp_params *params) { memset(params, 0, sizeof(*params)); params->num_draw_buffers = 1; params->num_layers = 1; } void brw_blorp_init_wm_prog_key(struct brw_wm_prog_key *wm_key) { memset(wm_key, 0, sizeof(*wm_key)); wm_key->nr_color_regions = 1; for (int i = 0; i < MAX_SAMPLERS; i++) wm_key->tex.swizzles[i] = SWIZZLE_XYZW; } static int nir_uniform_type_size(const struct glsl_type *type) { /* Only very basic types are allowed */ assert(glsl_type_is_vector_or_scalar(type)); assert(glsl_get_bit_size(type) == 32); return glsl_get_vector_elements(type) * 4; } const unsigned * brw_blorp_compile_nir_shader(struct blorp_context *blorp, struct nir_shader *nir, const struct brw_wm_prog_key *wm_key, bool use_repclear, struct brw_blorp_prog_data *prog_data, unsigned *program_size) { const struct brw_compiler *compiler = blorp->compiler; void *mem_ctx = ralloc_context(NULL); /* Calling brw_preprocess_nir and friends is destructive and, if cloning is * enabled, may end up completely replacing the nir_shader. Therefore, we * own it and might as well put it in our context for easy cleanup. */ ralloc_steal(mem_ctx, nir); nir->options = compiler->glsl_compiler_options[MESA_SHADER_FRAGMENT].NirOptions; struct brw_wm_prog_data wm_prog_data; memset(&wm_prog_data, 0, sizeof(wm_prog_data)); wm_prog_data.base.nr_params = 0; wm_prog_data.base.param = NULL; /* BLORP always just uses the first two binding table entries */ wm_prog_data.binding_table.render_target_start = BLORP_RENDERBUFFER_BT_INDEX; wm_prog_data.base.binding_table.texture_start = BLORP_TEXTURE_BT_INDEX; nir = brw_preprocess_nir(compiler, nir); nir_remove_dead_variables(nir, nir_var_shader_in); nir_shader_gather_info(nir, nir_shader_get_entrypoint(nir)); /* Uniforms are required to be lowered before going into compile_fs. For * BLORP, we'll assume that whoever builds the shader sets the location * they want so we just need to lower them and figure out how many we have * in total. */ nir->num_uniforms = 0; nir_foreach_variable(var, &nir->uniforms) { var->data.driver_location = var->data.location; unsigned end = var->data.location + nir_uniform_type_size(var->type); nir->num_uniforms = MAX2(nir->num_uniforms, end); } nir_lower_io(nir, nir_var_uniform, nir_uniform_type_size, 0); const unsigned *program = brw_compile_fs(compiler, blorp->driver_ctx, mem_ctx, wm_key, &wm_prog_data, nir, NULL, -1, -1, false, use_repclear, program_size, NULL); /* Copy the relavent bits of wm_prog_data over into the blorp prog data */ prog_data->dispatch_8 = wm_prog_data.dispatch_8; prog_data->dispatch_16 = wm_prog_data.dispatch_16; prog_data->first_curbe_grf_0 = wm_prog_data.base.dispatch_grf_start_reg; prog_data->first_curbe_grf_2 = wm_prog_data.dispatch_grf_start_reg_2; prog_data->ksp_offset_2 = wm_prog_data.prog_offset_2; prog_data->persample_msaa_dispatch = wm_prog_data.persample_dispatch; prog_data->flat_inputs = wm_prog_data.flat_inputs; prog_data->num_varying_inputs = wm_prog_data.num_varying_inputs; prog_data->inputs_read = nir->info->inputs_read; assert(wm_prog_data.base.nr_params == 0); return program; } void blorp_gen6_hiz_op(struct blorp_batch *batch, struct blorp_surf *surf, unsigned level, unsigned layer, enum blorp_hiz_op op) { struct blorp_params params; blorp_params_init(¶ms); params.hiz_op = op; brw_blorp_surface_info_init(batch->blorp, ¶ms.depth, surf, level, layer, surf->surf->format, true); /* Align the rectangle primitive to 8x4 pixels. * * During fast depth clears, the emitted rectangle primitive must be * aligned to 8x4 pixels. From the Ivybridge PRM, Vol 2 Part 1 Section * 11.5.3.1 Depth Buffer Clear (and the matching section in the Sandybridge * PRM): * If Number of Multisamples is NUMSAMPLES_1, the rectangle must be * aligned to an 8x4 pixel block relative to the upper left corner * of the depth buffer [...] * * For hiz resolves, the rectangle must also be 8x4 aligned. Item * WaHizAmbiguate8x4Aligned from the Haswell workarounds page and the * Ivybridge simulator require the alignment. * * To be safe, let's just align the rect for all hiz operations and all * hardware generations. * * However, for some miptree slices of a Z24 texture, emitting an 8x4 * aligned rectangle that covers the slice may clobber adjacent slices if * we strictly adhered to the texture alignments specified in the PRM. The * Ivybridge PRM, Section "Alignment Unit Size", states that * SURFACE_STATE.Surface_Horizontal_Alignment should be 4 for Z24 surfaces, * not 8. But commit 1f112cc increased the alignment from 4 to 8, which * prevents the clobbering. */ params.x1 = minify(params.depth.surf.logical_level0_px.width, params.depth.view.base_level); params.y1 = minify(params.depth.surf.logical_level0_px.height, params.depth.view.base_level); params.x1 = ALIGN(params.x1, 8); params.y1 = ALIGN(params.y1, 4); if (params.depth.view.base_level == 0) { /* TODO: What about MSAA? */ params.depth.surf.logical_level0_px.width = params.x1; params.depth.surf.logical_level0_px.height = params.y1; } params.dst.surf.samples = params.depth.surf.samples; params.dst.surf.logical_level0_px = params.depth.surf.logical_level0_px; params.depth_format = isl_format_get_depth_format(surf->surf->format, false); batch->blorp->exec(batch, ¶ms); }