diff options
Diffstat (limited to 'src/intel/blorp/blorp.c')
| -rw-r--r-- | src/intel/blorp/blorp.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/src/intel/blorp/blorp.c b/src/intel/blorp/blorp.c new file mode 100644 index 0000000..4dbba01 --- /dev/null +++ b/src/intel/blorp/blorp.c @@ -0,0 +1,292 @@ +/* + * 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 <errno.h> + +#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) +{ + batch->blorp = blorp; + batch->driver_batch = driver_batch; +} + +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) +{ + /* Layer is a physical layer, so if this is a 2D multisample array texture + * using INTEL_MSAA_LAYOUT_UMS or INTEL_MSAA_LAYOUT_CMS, then it had better + * be a multiple of num_samples. + */ + unsigned layer_multiplier = 1; + if (surf->surf->msaa_layout == ISL_MSAA_LAYOUT_ARRAY) { + assert(layer % surf->surf->samples == 0); + layer_multiplier = surf->surf->samples; + } + + 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, + .channel_select = { + ISL_CHANNEL_SELECT_RED, + ISL_CHANNEL_SELECT_GREEN, + ISL_CHANNEL_SELECT_BLUE, + ISL_CHANNEL_SELECT_ALPHA, + }, + }; + + 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->view.array_len = MAX2(info->surf.logical_level0_px.depth, + info->surf.logical_level0_px.array_len); + info->z_offset = layer / layer_multiplier; + } else { + info->view.base_array_layer = layer / layer_multiplier; + info->view.array_len = 1; + info->z_offset = 0; + } +} + + +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); + + 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); +} |