diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_context.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_context.c | 1977 |
1 files changed, 0 insertions, 1977 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c deleted file mode 100644 index 097dd9cb1dc..00000000000 --- a/src/mesa/drivers/dri/i965/brw_context.c +++ /dev/null @@ -1,1977 +0,0 @@ -/* - Copyright 2003 VMware, Inc. - Copyright (C) Intel Corp. 2006. All Rights Reserved. - Intel funded Tungsten Graphics to - develop this 3D driver. - - 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 COPYRIGHT OWNER(S) AND/OR ITS 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. - - **********************************************************************/ - /* - * Authors: - * Keith Whitwell <keithw@vmware.com> - */ - - -#include "compiler/nir/nir.h" -#include "main/api_exec.h" -#include "main/context.h" -#include "main/fbobject.h" -#include "main/extensions.h" -#include "main/glthread.h" -#include "main/macros.h" -#include "main/points.h" -#include "main/version.h" -#include "main/vtxfmt.h" -#include "main/texobj.h" -#include "main/framebuffer.h" -#include "main/stencil.h" -#include "main/state.h" -#include "main/spirv_extensions.h" -#include "main/externalobjects.h" - -#include "vbo/vbo.h" - -#include "drivers/common/driverfuncs.h" -#include "drivers/common/meta.h" -#include "utils.h" - -#include "brw_context.h" -#include "brw_defines.h" -#include "brw_blorp.h" -#include "brw_draw.h" -#include "brw_state.h" - -#include "brw_batch.h" -#include "brw_buffer_objects.h" -#include "brw_buffers.h" -#include "brw_fbo.h" -#include "brw_mipmap_tree.h" -#include "brw_pixel.h" -#include "brw_image.h" -#include "brw_tex.h" -#include "brw_tex_obj.h" - -#include "swrast_setup/swrast_setup.h" -#include "tnl/tnl.h" -#include "tnl/t_pipeline.h" -#include "util/ralloc.h" -#include "util/debug.h" -#include "util/disk_cache.h" -#include "util/u_memory.h" -#include "isl/isl.h" - -#include "common/intel_defines.h" -#include "common/intel_uuid.h" - -#include "compiler/spirv/nir_spirv.h" -/*************************************** - * Mesa's Driver Functions - ***************************************/ - -const char *const brw_vendor_string = "Intel Open Source Technology Center"; - -const char * -brw_get_renderer_string(const struct brw_screen *screen) -{ - static char buf[128]; - const char *name = screen->devinfo.name; - - if (!name) - name = "Intel Unknown"; - - snprintf(buf, sizeof(buf), "Mesa DRI %s", name); - - return buf; -} - -static const GLubyte * -brw_get_string(struct gl_context * ctx, GLenum name) -{ - const struct brw_context *const brw = brw_context(ctx); - - switch (name) { - case GL_VENDOR: - return (GLubyte *) brw_vendor_string; - - case GL_RENDERER: - return - (GLubyte *) brw_get_renderer_string(brw->screen); - - default: - return NULL; - } -} - -static void -brw_set_background_context(struct gl_context *ctx, - UNUSED struct util_queue_monitoring *queue_info) -{ - struct brw_context *brw = brw_context(ctx); - __DRIcontext *driContext = brw->driContext; - __DRIscreen *driScreen = driContext->driScreenPriv; - const __DRIbackgroundCallableExtension *backgroundCallable = - driScreen->dri2.backgroundCallable; - - /* Note: Mesa will only call this function if we've called - * _mesa_enable_multithreading(). We only do that if the loader exposed - * the __DRI_BACKGROUND_CALLABLE extension. So we know that - * backgroundCallable is not NULL. - */ - backgroundCallable->setBackgroundContext(driContext->loaderPrivate); -} - -static struct gl_memory_object * -brw_new_memoryobj(struct gl_context *ctx, GLuint name) -{ - struct brw_memory_object *memory_object = CALLOC_STRUCT(brw_memory_object); - if (!memory_object) - return NULL; - - _mesa_initialize_memory_object(ctx, &memory_object->Base, name); - return &memory_object->Base; -} - -static void -brw_delete_memoryobj(struct gl_context *ctx, struct gl_memory_object *memObj) -{ - struct brw_memory_object *memory_object = brw_memory_object(memObj); - brw_bo_unreference(memory_object->bo); - _mesa_delete_memory_object(ctx, memObj); -} - -static void -brw_import_memoryobj_fd(struct gl_context *ctx, - struct gl_memory_object *obj, - GLuint64 size, - int fd) -{ - struct brw_context *brw = brw_context(ctx); - struct brw_memory_object *memory_object = brw_memory_object(obj); - - memory_object->bo = brw_bo_gem_create_from_prime(brw->bufmgr, fd); - brw_bo_reference(memory_object->bo); - assert(memory_object->bo->size >= size); - close(fd); -} - -static void -brw_viewport(struct gl_context *ctx) -{ - struct brw_context *brw = brw_context(ctx); - __DRIcontext *driContext = brw->driContext; - - if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { - if (driContext->driDrawablePriv) - dri2InvalidateDrawable(driContext->driDrawablePriv); - if (driContext->driReadablePriv) - dri2InvalidateDrawable(driContext->driReadablePriv); - } -} - -static void -brw_update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb) -{ - struct brw_context *brw = brw_context(ctx); - - /* Quantize the derived default number of samples - */ - fb->DefaultGeometry._NumSamples = - brw_quantize_num_samples(brw->screen, fb->DefaultGeometry.NumSamples); -} - -static void -brw_update_state(struct gl_context * ctx) -{ - GLuint new_state = ctx->NewState; - struct brw_context *brw = brw_context(ctx); - - if (ctx->swrast_context) - _swrast_InvalidateState(ctx, new_state); - - brw->NewGLState |= new_state; - - if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT)) - _mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer); - - if (new_state & (_NEW_STENCIL | _NEW_BUFFERS)) { - brw->stencil_enabled = _mesa_stencil_is_enabled(ctx); - brw->stencil_two_sided = _mesa_stencil_is_two_sided(ctx); - brw->stencil_write_enabled = - _mesa_stencil_is_write_enabled(ctx, brw->stencil_two_sided); - } - - if (new_state & _NEW_POLYGON) - brw->polygon_front_bit = _mesa_polygon_get_front_bit(ctx); - - if (new_state & _NEW_BUFFERS) { - brw_update_framebuffer(ctx, ctx->DrawBuffer); - if (ctx->DrawBuffer != ctx->ReadBuffer) - brw_update_framebuffer(ctx, ctx->ReadBuffer); - } -} - -#define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer) - -static void -brw_flush_front(struct gl_context *ctx) -{ - struct brw_context *brw = brw_context(ctx); - __DRIcontext *driContext = brw->driContext; - __DRIdrawable *driDrawable = driContext->driDrawablePriv; - __DRIscreen *const dri_screen = brw->screen->driScrnPriv; - - if (brw->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { - if (flushFront(dri_screen) && driDrawable && - driDrawable->loaderPrivate) { - - /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT. - * - * This potentially resolves both front and back buffer. It - * is unnecessary to resolve the back, but harms nothing except - * performance. And no one cares about front-buffer render - * performance. - */ - brw_resolve_for_dri2_flush(brw, driDrawable); - brw_batch_flush(brw); - - flushFront(dri_screen)(driDrawable, driDrawable->loaderPrivate); - - /* We set the dirty bit in brw_prepare_render() if we're - * front buffer rendering once we get there. - */ - brw->front_buffer_dirty = false; - } - } -} - -static void -brw_display_shared_buffer(struct brw_context *brw) -{ - __DRIcontext *dri_context = brw->driContext; - __DRIdrawable *dri_drawable = dri_context->driDrawablePriv; - __DRIscreen *dri_screen = brw->screen->driScrnPriv; - int fence_fd = -1; - - if (!brw->is_shared_buffer_bound) - return; - - if (!brw->is_shared_buffer_dirty) - return; - - if (brw->screen->has_exec_fence) { - /* This function is always called during a flush operation, so there is - * no need to flush again here. But we want to provide a fence_fd to the - * loader, and a redundant flush is the easiest way to acquire one. - */ - if (brw_batch_flush_fence(brw, -1, &fence_fd)) - return; - } - - dri_screen->mutableRenderBuffer.loader - ->displaySharedBuffer(dri_drawable, fence_fd, - dri_drawable->loaderPrivate); - brw->is_shared_buffer_dirty = false; -} - -static void -brw_glFlush(struct gl_context *ctx, unsigned gallium_flush_flags) -{ - struct brw_context *brw = brw_context(ctx); - - brw_batch_flush(brw); - brw_flush_front(ctx); - brw_display_shared_buffer(brw); - brw->need_flush_throttle = true; -} - -static void -brw_glEnable(struct gl_context *ctx, GLenum cap, GLboolean state) -{ - struct brw_context *brw = brw_context(ctx); - - switch (cap) { - case GL_BLACKHOLE_RENDER_INTEL: - brw->frontend_noop = state; - brw_batch_flush(brw); - brw_batch_maybe_noop(brw); - /* Because we started previous batches with a potential - * MI_BATCH_BUFFER_END if NOOP was enabled, that means that anything - * that was ever emitted after that never made it to the HW. So when the - * blackhole state changes from NOOP->!NOOP reupload the entire state. - */ - if (!brw->frontend_noop) { - brw->NewGLState = ~0u; - brw->ctx.NewDriverState = ~0ull; - } - break; - default: - break; - } -} - -static void -brw_finish(struct gl_context * ctx) -{ - struct brw_context *brw = brw_context(ctx); - - brw_glFlush(ctx, 0); - - if (brw->batch.last_bo) - brw_bo_wait_rendering(brw->batch.last_bo); -} - -static void -brw_get_device_uuid(struct gl_context *ctx, char *uuid) -{ - struct brw_context *brw = brw_context(ctx); - struct brw_screen *screen = brw->screen; - - assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE); - memset(uuid, 0, GL_UUID_SIZE_EXT); - intel_uuid_compute_device_id((uint8_t *)uuid, &screen->isl_dev, PIPE_UUID_SIZE); -} - - -static void -brw_get_driver_uuid(struct gl_context *ctx, char *uuid) -{ - struct brw_context *brw = brw_context(ctx); - struct brw_screen *screen = brw->screen; - - assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE); - memset(uuid, 0, GL_UUID_SIZE_EXT); - intel_uuid_compute_driver_id((uint8_t *)uuid, &screen->devinfo, PIPE_UUID_SIZE); -} - -static void -brw_init_driver_functions(struct brw_context *brw, - struct dd_function_table *functions) -{ - const struct intel_device_info *devinfo = &brw->screen->devinfo; - - _mesa_init_driver_functions(functions); - - /* GLX uses DRI2 invalidate events to handle window resizing. - * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib), - * which doesn't provide a mechanism for snooping the event queues. - * - * So EGL still relies on viewport hacks to handle window resizing. - * This should go away with DRI3000. - */ - if (!brw->driContext->driScreenPriv->dri2.useInvalidate) - functions->Viewport = brw_viewport; - - functions->Enable = brw_glEnable; - functions->Flush = brw_glFlush; - functions->Finish = brw_finish; - functions->GetString = brw_get_string; - functions->UpdateState = brw_update_state; - - brw_init_draw_functions(functions); - brw_init_texture_functions(functions); - brw_init_texture_image_functions(functions); - brw_init_texture_copy_image_functions(functions); - brw_init_copy_image_functions(functions); - brw_init_clear_functions(functions); - brw_init_buffer_functions(functions); - brw_init_pixel_functions(functions); - brw_init_buffer_object_functions(functions); - brw_init_syncobj_functions(functions); - brw_init_object_purgeable_functions(functions); - - brw_init_frag_prog_functions(functions); - brw_init_common_queryobj_functions(functions); - if (devinfo->verx10 >= 75) - hsw_init_queryobj_functions(functions); - else if (devinfo->ver >= 6) - gfx6_init_queryobj_functions(functions); - else - gfx4_init_queryobj_functions(functions); - brw_init_compute_functions(functions); - brw_init_conditional_render_functions(functions); - - functions->GenerateMipmap = brw_generate_mipmap; - - functions->QueryInternalFormat = brw_query_internal_format; - - functions->NewTransformFeedback = brw_new_transform_feedback; - functions->DeleteTransformFeedback = brw_delete_transform_feedback; - if (can_do_mi_math_and_lrr(brw->screen)) { - functions->BeginTransformFeedback = hsw_begin_transform_feedback; - functions->EndTransformFeedback = hsw_end_transform_feedback; - functions->PauseTransformFeedback = hsw_pause_transform_feedback; - functions->ResumeTransformFeedback = hsw_resume_transform_feedback; - } else if (devinfo->ver >= 7) { - functions->BeginTransformFeedback = gfx7_begin_transform_feedback; - functions->EndTransformFeedback = gfx7_end_transform_feedback; - functions->PauseTransformFeedback = gfx7_pause_transform_feedback; - functions->ResumeTransformFeedback = gfx7_resume_transform_feedback; - functions->GetTransformFeedbackVertexCount = - brw_get_transform_feedback_vertex_count; - } else { - functions->BeginTransformFeedback = brw_begin_transform_feedback; - functions->EndTransformFeedback = brw_end_transform_feedback; - functions->PauseTransformFeedback = brw_pause_transform_feedback; - functions->ResumeTransformFeedback = brw_resume_transform_feedback; - functions->GetTransformFeedbackVertexCount = - brw_get_transform_feedback_vertex_count; - } - - if (devinfo->ver >= 6) - functions->GetSamplePosition = gfx6_get_sample_position; - - /* GL_ARB_get_program_binary */ - brw_program_binary_init(brw->screen->deviceID); - functions->GetProgramBinaryDriverSHA1 = brw_get_program_binary_driver_sha1; - functions->ProgramBinarySerializeDriverBlob = brw_serialize_program_binary; - functions->ProgramBinaryDeserializeDriverBlob = - brw_deserialize_program_binary; - - if (brw->screen->disk_cache) { - functions->ShaderCacheSerializeDriverBlob = brw_program_serialize_nir; - } - - functions->SetBackgroundContext = brw_set_background_context; - - functions->NewMemoryObject = brw_new_memoryobj; - functions->DeleteMemoryObject = brw_delete_memoryobj; - functions->ImportMemoryObjectFd = brw_import_memoryobj_fd; - functions->GetDeviceUuid = brw_get_device_uuid; - functions->GetDriverUuid = brw_get_driver_uuid; -} - -static void -brw_initialize_spirv_supported_capabilities(struct brw_context *brw) -{ - const struct intel_device_info *devinfo = &brw->screen->devinfo; - struct gl_context *ctx = &brw->ctx; - - /* The following SPIR-V capabilities are only supported on gfx7+. In theory - * you should enable the extension only on gfx7+, but just in case let's - * assert it. - */ - assert(devinfo->ver >= 7); - - ctx->Const.SpirVCapabilities.atomic_storage = devinfo->ver >= 7; - ctx->Const.SpirVCapabilities.draw_parameters = true; - ctx->Const.SpirVCapabilities.float64 = devinfo->ver >= 8; - ctx->Const.SpirVCapabilities.geometry_streams = devinfo->ver >= 7; - ctx->Const.SpirVCapabilities.image_write_without_format = true; - ctx->Const.SpirVCapabilities.int64 = devinfo->ver >= 8; - ctx->Const.SpirVCapabilities.tessellation = true; - ctx->Const.SpirVCapabilities.transform_feedback = devinfo->ver >= 7; - ctx->Const.SpirVCapabilities.variable_pointers = true; - ctx->Const.SpirVCapabilities.integer_functions2 = devinfo->ver >= 8; -} - -static void -brw_initialize_context_constants(struct brw_context *brw) -{ - const struct intel_device_info *devinfo = &brw->screen->devinfo; - struct gl_context *ctx = &brw->ctx; - const struct brw_compiler *compiler = brw->screen->compiler; - - const bool stage_exists[MESA_SHADER_STAGES] = { - [MESA_SHADER_VERTEX] = true, - [MESA_SHADER_TESS_CTRL] = devinfo->ver >= 7, - [MESA_SHADER_TESS_EVAL] = devinfo->ver >= 7, - [MESA_SHADER_GEOMETRY] = devinfo->ver >= 6, - [MESA_SHADER_FRAGMENT] = true, - [MESA_SHADER_COMPUTE] = - (_mesa_is_desktop_gl(ctx) && - ctx->Const.MaxComputeWorkGroupSize[0] >= 1024) || - (ctx->API == API_OPENGLES2 && - ctx->Const.MaxComputeWorkGroupSize[0] >= 128), - }; - - unsigned num_stages = 0; - for (int i = 0; i < MESA_SHADER_STAGES; i++) { - if (stage_exists[i]) - num_stages++; - } - - unsigned max_samplers = - devinfo->verx10 >= 75 ? BRW_MAX_TEX_UNIT : 16; - - ctx->Const.MaxDualSourceDrawBuffers = 1; - ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS; - ctx->Const.MaxCombinedShaderOutputResources = - MAX_IMAGE_UNITS + BRW_MAX_DRAW_BUFFERS; - - /* The timestamp register we can read for glGetTimestamp() is - * sometimes only 32 bits, before scaling to nanoseconds (depending - * on kernel). - * - * Once scaled to nanoseconds the timestamp would roll over at a - * non-power-of-two, so an application couldn't use - * GL_QUERY_COUNTER_BITS to handle rollover correctly. Instead, we - * report 36 bits and truncate at that (rolling over 5 times as - * often as the HW counter), and when the 32-bit counter rolls - * over, it happens to also be at a rollover in the reported value - * from near (1<<36) to 0. - * - * The low 32 bits rolls over in ~343 seconds. Our 36-bit result - * rolls over every ~69 seconds. - */ - ctx->Const.QueryCounterBits.Timestamp = 36; - - ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */ - ctx->Const.MaxImageUnits = MAX_IMAGE_UNITS; - if (devinfo->ver >= 7) { - ctx->Const.MaxRenderbufferSize = 16384; - ctx->Const.MaxTextureSize = 16384; - ctx->Const.MaxCubeTextureLevels = 15; /* 16384 */ - } else { - ctx->Const.MaxRenderbufferSize = 8192; - ctx->Const.MaxTextureSize = 8192; - ctx->Const.MaxCubeTextureLevels = 14; /* 8192 */ - } - ctx->Const.Max3DTextureLevels = 12; /* 2048 */ - ctx->Const.MaxArrayTextureLayers = devinfo->ver >= 7 ? 2048 : 512; - ctx->Const.MaxTextureMbytes = 1536; - ctx->Const.MaxTextureRectSize = devinfo->ver >= 7 ? 16384 : 8192; - ctx->Const.MaxTextureMaxAnisotropy = 16.0; - ctx->Const.MaxTextureLodBias = 15.0; - ctx->Const.StripTextureBorder = true; - if (devinfo->ver >= 7) { - ctx->Const.MaxProgramTextureGatherComponents = 4; - ctx->Const.MinProgramTextureGatherOffset = -32; - ctx->Const.MaxProgramTextureGatherOffset = 31; - } else if (devinfo->ver == 6) { - ctx->Const.MaxProgramTextureGatherComponents = 1; - ctx->Const.MinProgramTextureGatherOffset = -8; - ctx->Const.MaxProgramTextureGatherOffset = 7; - } - - ctx->Const.MaxUniformBlockSize = 65536; - - for (int i = 0; i < MESA_SHADER_STAGES; i++) { - struct gl_program_constants *prog = &ctx->Const.Program[i]; - - if (!stage_exists[i]) - continue; - - prog->MaxTextureImageUnits = max_samplers; - - prog->MaxUniformBlocks = BRW_MAX_UBO; - prog->MaxCombinedUniformComponents = - prog->MaxUniformComponents + - ctx->Const.MaxUniformBlockSize / 4 * prog->MaxUniformBlocks; - - prog->MaxAtomicCounters = MAX_ATOMIC_COUNTERS; - prog->MaxAtomicBuffers = BRW_MAX_ABO; - prog->MaxImageUniforms = compiler->scalar_stage[i] ? BRW_MAX_IMAGES : 0; - prog->MaxShaderStorageBlocks = BRW_MAX_SSBO; - } - - ctx->Const.MaxTextureUnits = - MIN2(ctx->Const.MaxTextureCoordUnits, - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits); - - ctx->Const.MaxUniformBufferBindings = num_stages * BRW_MAX_UBO; - ctx->Const.MaxCombinedUniformBlocks = num_stages * BRW_MAX_UBO; - ctx->Const.MaxCombinedAtomicBuffers = num_stages * BRW_MAX_ABO; - ctx->Const.MaxCombinedShaderStorageBlocks = num_stages * BRW_MAX_SSBO; - ctx->Const.MaxShaderStorageBufferBindings = num_stages * BRW_MAX_SSBO; - ctx->Const.MaxCombinedTextureImageUnits = num_stages * max_samplers; - ctx->Const.MaxCombinedImageUniforms = num_stages * BRW_MAX_IMAGES; - - - /* Hardware only supports a limited number of transform feedback buffers. - * So we need to override the Mesa default (which is based only on software - * limits). - */ - ctx->Const.MaxTransformFeedbackBuffers = BRW_MAX_SOL_BUFFERS; - - /* On Gfx6, in the worst case, we use up one binding table entry per - * transform feedback component (see comments above the definition of - * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value - * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to - * BRW_MAX_SOL_BINDINGS. - * - * In "separate components" mode, we need to divide this value by - * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries - * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS. - */ - ctx->Const.MaxTransformFeedbackInterleavedComponents = BRW_MAX_SOL_BINDINGS; - ctx->Const.MaxTransformFeedbackSeparateComponents = - BRW_MAX_SOL_BINDINGS / BRW_MAX_SOL_BUFFERS; - - ctx->Const.AlwaysUseGetTransformFeedbackVertexCount = - !can_do_mi_math_and_lrr(brw->screen); - - int max_samples; - const int *msaa_modes = brw_supported_msaa_modes(brw->screen); - const int clamp_max_samples = - driQueryOptioni(&brw->screen->optionCache, "clamp_max_samples"); - - if (clamp_max_samples < 0) { - max_samples = msaa_modes[0]; - } else { - /* Select the largest supported MSAA mode that does not exceed - * clamp_max_samples. - */ - max_samples = 0; - for (int i = 0; msaa_modes[i] != 0; ++i) { - if (msaa_modes[i] <= clamp_max_samples) { - max_samples = msaa_modes[i]; - break; - } - } - } - - ctx->Const.MaxSamples = max_samples; - ctx->Const.MaxColorTextureSamples = max_samples; - ctx->Const.MaxDepthTextureSamples = max_samples; - ctx->Const.MaxIntegerSamples = max_samples; - ctx->Const.MaxImageSamples = 0; - - ctx->Const.MinLineWidth = 1.0; - ctx->Const.MinLineWidthAA = 1.0; - if (devinfo->ver >= 6) { - ctx->Const.MaxLineWidth = 7.375; - ctx->Const.MaxLineWidthAA = 7.375; - ctx->Const.LineWidthGranularity = 0.125; - } else { - ctx->Const.MaxLineWidth = 7.0; - ctx->Const.MaxLineWidthAA = 7.0; - ctx->Const.LineWidthGranularity = 0.5; - } - - /* For non-antialiased lines, we have to round the line width to the - * nearest whole number. Make sure that we don't advertise a line - * width that, when rounded, will be beyond the actual hardware - * maximum. - */ - assert(roundf(ctx->Const.MaxLineWidth) <= ctx->Const.MaxLineWidth); - - ctx->Const.MinPointSize = 1.0; - ctx->Const.MinPointSizeAA = 1.0; - ctx->Const.MaxPointSize = 255.0; - ctx->Const.MaxPointSizeAA = 255.0; - ctx->Const.PointSizeGranularity = 1.0; - - if (devinfo->ver >= 5 || devinfo->is_g4x) - ctx->Const.MaxClipPlanes = 8; - - ctx->Const.GLSLFragCoordIsSysVal = true; - ctx->Const.GLSLFrontFacingIsSysVal = true; - ctx->Const.GLSLTessLevelsAsInputs = true; - ctx->Const.PrimitiveRestartForPatches = true; - - ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeInstructions = 16 * 1024; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxAluInstructions = 0; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxTexInstructions = 0; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxTexIndirections = 0; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeAluInstructions = 0; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeTexInstructions = 0; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeTexIndirections = 0; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeAttribs = 16; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeTemps = 256; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeAddressRegs = 1; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeParameters = 1024; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxEnvParams = - MIN2(ctx->Const.Program[MESA_SHADER_VERTEX].MaxNativeParameters, - ctx->Const.Program[MESA_SHADER_VERTEX].MaxEnvParams); - - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeInstructions = 1024; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAluInstructions = 1024; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTexInstructions = 1024; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTexIndirections = 1024; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAttribs = 12; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTemps = 256; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAddressRegs = 0; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeParameters = 1024; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams = - MIN2(ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeParameters, - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams); - - /* Fragment shaders use real, 32-bit twos-complement integers for all - * integer types. - */ - ctx->Const.Program[MESA_SHADER_FRAGMENT].LowInt.RangeMin = 31; - ctx->Const.Program[MESA_SHADER_FRAGMENT].LowInt.RangeMax = 30; - ctx->Const.Program[MESA_SHADER_FRAGMENT].LowInt.Precision = 0; - ctx->Const.Program[MESA_SHADER_FRAGMENT].HighInt = ctx->Const.Program[MESA_SHADER_FRAGMENT].LowInt; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt = ctx->Const.Program[MESA_SHADER_FRAGMENT].LowInt; - - ctx->Const.Program[MESA_SHADER_VERTEX].LowInt.RangeMin = 31; - ctx->Const.Program[MESA_SHADER_VERTEX].LowInt.RangeMax = 30; - ctx->Const.Program[MESA_SHADER_VERTEX].LowInt.Precision = 0; - ctx->Const.Program[MESA_SHADER_VERTEX].HighInt = ctx->Const.Program[MESA_SHADER_VERTEX].LowInt; - ctx->Const.Program[MESA_SHADER_VERTEX].MediumInt = ctx->Const.Program[MESA_SHADER_VERTEX].LowInt; - - /* Gfx6 converts quads to polygon in beginning of 3D pipeline, - * but we're not sure how it's actually done for vertex order, - * that affect provoking vertex decision. Always use last vertex - * convention for quad primitive which works as expected for now. - */ - if (devinfo->ver >= 6) - ctx->Const.QuadsFollowProvokingVertexConvention = false; - - ctx->Const.NativeIntegers = true; - - /* Regarding the CMP instruction, the Ivybridge PRM says: - * - * "For each enabled channel 0b or 1b is assigned to the appropriate flag - * bit and 0/all zeros or all ones (e.g, byte 0xFF, word 0xFFFF, DWord - * 0xFFFFFFFF) is assigned to dst." - * - * but PRMs for earlier generations say - * - * "In dword format, one GRF may store up to 8 results. When the register - * is used later as a vector of Booleans, as only LSB at each channel - * contains meaning [sic] data, software should make sure all higher bits - * are masked out (e.g. by 'and-ing' an [sic] 0x01 constant)." - * - * We select the representation of a true boolean uniform to be ~0, and fix - * the results of Gen <= 5 CMP instruction's with -(result & 1). - */ - ctx->Const.UniformBooleanTrue = ~0; - - /* From the gfx4 PRM, volume 4 page 127: - * - * "For SURFTYPE_BUFFER non-rendertarget surfaces, this field specifies - * the base address of the first element of the surface, computed in - * software by adding the surface base address to the byte offset of - * the element in the buffer." - * - * However, unaligned accesses are slower, so enforce buffer alignment. - * - * In order to push UBO data, 3DSTATE_CONSTANT_XS imposes an additional - * restriction: the start of the buffer needs to be 32B aligned. - */ - ctx->Const.UniformBufferOffsetAlignment = 32; - - /* ShaderStorageBufferOffsetAlignment should be a cacheline (64 bytes) so - * that we can safely have the CPU and GPU writing the same SSBO on - * non-cachecoherent systems (our Atom CPUs). With UBOs, the GPU never - * writes, so there's no problem. For an SSBO, the GPU and the CPU can - * be updating disjoint regions of the buffer simultaneously and that will - * break if the regions overlap the same cacheline. - */ - ctx->Const.ShaderStorageBufferOffsetAlignment = 64; - ctx->Const.TextureBufferOffsetAlignment = 16; - ctx->Const.MaxTextureBufferSize = 128 * 1024 * 1024; - - if (devinfo->ver >= 6) { - ctx->Const.MaxVarying = 32; - ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 128; - ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxInputComponents = - compiler->scalar_stage[MESA_SHADER_GEOMETRY] ? 128 : 64; - ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents = 128; - ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = 128; - ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxInputComponents = 128; - ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxOutputComponents = 128; - ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxInputComponents = 128; - ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxOutputComponents = 128; - } - - /* We want the GLSL compiler to emit code that uses condition codes */ - for (int i = 0; i < MESA_SHADER_STAGES; i++) { - ctx->Const.ShaderCompilerOptions[i] = - brw->screen->compiler->glsl_compiler_options[i]; - } - - if (devinfo->ver >= 7) { - ctx->Const.MaxViewportWidth = 32768; - ctx->Const.MaxViewportHeight = 32768; - } - - /* ARB_viewport_array, OES_viewport_array */ - if (devinfo->ver >= 6) { - ctx->Const.MaxViewports = GFX6_NUM_VIEWPORTS; - ctx->Const.ViewportSubpixelBits = 8; - - /* Cast to float before negating because MaxViewportWidth is unsigned. - */ - ctx->Const.ViewportBounds.Min = -(float)ctx->Const.MaxViewportWidth; - ctx->Const.ViewportBounds.Max = ctx->Const.MaxViewportWidth; - } - - /* ARB_gpu_shader5 */ - if (devinfo->ver >= 7) - ctx->Const.MaxVertexStreams = MIN2(4, MAX_VERTEX_STREAMS); - - /* ARB_framebuffer_no_attachments */ - ctx->Const.MaxFramebufferWidth = 16384; - ctx->Const.MaxFramebufferHeight = 16384; - ctx->Const.MaxFramebufferLayers = ctx->Const.MaxArrayTextureLayers; - ctx->Const.MaxFramebufferSamples = max_samples; - - /* OES_primitive_bounding_box */ - ctx->Const.NoPrimitiveBoundingBoxOutput = true; - - /* TODO: We should be able to use STD430 packing by default on all hardware - * but some piglit tests [1] currently fail on SNB when this is enabled. - * The problem is the messages we're using for doing uniform pulls - * in the vec4 back-end on SNB is the OWORD block load instruction, which - * takes its offset in units of OWORDS (16 bytes). On IVB+, we use the - * sampler which doesn't have these restrictions. - * - * In the scalar back-end, we use the sampler for dynamic uniform loads and - * pull an entire cache line at a time for constant offset loads both of - * which support almost any alignment. - * - * [1] glsl-1.40/uniform_buffer/vs-float-array-variable-index.shader_test - */ - if (devinfo->ver >= 7) - ctx->Const.UseSTD430AsDefaultPacking = true; - - if (!(ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT)) - ctx->Const.AllowMappedBuffersDuringExecution = true; - - /* GL_ARB_get_program_binary */ - ctx->Const.NumProgramBinaryFormats = 1; -} - -static void -brw_initialize_cs_context_constants(struct brw_context *brw) -{ - struct gl_context *ctx = &brw->ctx; - struct intel_device_info *devinfo = &brw->screen->devinfo; - - /* Maximum number of scalar compute shader invocations that can be run in - * parallel in the same subslice assuming SIMD32 dispatch. - */ - const unsigned max_threads = devinfo->max_cs_workgroup_threads; - const uint32_t max_invocations = 32 * max_threads; - ctx->Const.MaxComputeWorkGroupSize[0] = max_invocations; - ctx->Const.MaxComputeWorkGroupSize[1] = max_invocations; - ctx->Const.MaxComputeWorkGroupSize[2] = max_invocations; - ctx->Const.MaxComputeWorkGroupInvocations = max_invocations; - ctx->Const.MaxComputeSharedMemorySize = 64 * 1024; - - /* Constants used for ARB_compute_variable_group_size. */ - if (devinfo->ver >= 7) { - assert(max_invocations >= 512); - ctx->Const.MaxComputeVariableGroupSize[0] = max_invocations; - ctx->Const.MaxComputeVariableGroupSize[1] = max_invocations; - ctx->Const.MaxComputeVariableGroupSize[2] = max_invocations; - ctx->Const.MaxComputeVariableGroupInvocations = max_invocations; - } -} - -/** - * Process driconf (drirc) options, setting appropriate context flags. - * - * brw_init_extensions still pokes at optionCache directly, in order to - * avoid advertising various extensions. No flags are set, so it makes - * sense to continue doing that there. - */ -static void -brw_process_driconf_options(struct brw_context *brw) -{ - const struct intel_device_info *devinfo = &brw->screen->devinfo; - struct gl_context *ctx = &brw->ctx; - const driOptionCache *const options = &brw->screen->optionCache; - - if (INTEL_DEBUG & DEBUG_NO_HIZ) { - brw->has_hiz = false; - /* On gfx6, you can only do separate stencil with HIZ. */ - if (devinfo->ver == 6) - brw->has_separate_stencil = false; - } - - if (driQueryOptionb(options, "mesa_no_error")) - ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR; - - if (driQueryOptionb(options, "always_flush_batch")) { - fprintf(stderr, "flushing batchbuffer before/after each draw call\n"); - brw->always_flush_batch = true; - } - - if (driQueryOptionb(options, "always_flush_cache")) { - fprintf(stderr, "flushing GPU caches before/after each draw call\n"); - brw->always_flush_cache = true; - } - - if (driQueryOptionb(options, "disable_throttling")) { - fprintf(stderr, "disabling flush throttling\n"); - brw->disable_throttling = true; - } - - brw->precompile = driQueryOptionb(&brw->screen->optionCache, "shader_precompile"); - - if (driQueryOptionb(&brw->screen->optionCache, "precise_trig")) - brw->screen->compiler->precise_trig = true; - - ctx->Const.ForceGLSLExtensionsWarn = - driQueryOptionb(options, "force_glsl_extensions_warn"); - - ctx->Const.ForceGLSLVersion = - driQueryOptioni(options, "force_glsl_version"); - - ctx->Const.DisableGLSLLineContinuations = - driQueryOptionb(options, "disable_glsl_line_continuations"); - - ctx->Const.AllowGLSLExtensionDirectiveMidShader = - driQueryOptionb(options, "allow_glsl_extension_directive_midshader"); - - ctx->Const.AllowGLSLBuiltinVariableRedeclaration = - driQueryOptionb(options, "allow_glsl_builtin_variable_redeclaration"); - - ctx->Const.AllowHigherCompatVersion = - driQueryOptionb(options, "allow_higher_compat_version"); - - ctx->Const.ForceGLSLAbsSqrt = - driQueryOptionb(options, "force_glsl_abs_sqrt"); - - ctx->Const.GLSLZeroInit = driQueryOptionb(options, "glsl_zero_init") ? 1 : 0; - - brw->dual_color_blend_by_location = - driQueryOptionb(options, "dual_color_blend_by_location"); - - ctx->Const.AllowGLSLCrossStageInterpolationMismatch = - driQueryOptionb(options, "allow_glsl_cross_stage_interpolation_mismatch"); - - char *vendor_str = driQueryOptionstr(options, "force_gl_vendor"); - /* not an empty string */ - if (*vendor_str) - ctx->Const.VendorOverride = vendor_str; - - ctx->Const.dri_config_options_sha1 = - ralloc_array(brw->mem_ctx, unsigned char, 20); - driComputeOptionsSha1(&brw->screen->optionCache, - ctx->Const.dri_config_options_sha1); -} - -GLboolean -brw_create_context(gl_api api, - const struct gl_config *mesaVis, - __DRIcontext *driContextPriv, - const struct __DriverContextConfig *ctx_config, - unsigned *dri_ctx_error, - void *sharedContextPrivate) -{ - struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate; - struct brw_screen *screen = driContextPriv->driScreenPriv->driverPrivate; - const struct intel_device_info *devinfo = &screen->devinfo; - struct dd_function_table functions; - - /* Only allow the __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag if the kernel - * provides us with context reset notifications. - */ - uint32_t allowed_flags = __DRI_CTX_FLAG_DEBUG | - __DRI_CTX_FLAG_FORWARD_COMPATIBLE | - __DRI_CTX_FLAG_NO_ERROR; - - if (screen->has_context_reset_notification) - allowed_flags |= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS; - - if (ctx_config->flags & ~allowed_flags) { - *dri_ctx_error = __DRI_CTX_ERROR_UNKNOWN_FLAG; - return false; - } - - if (ctx_config->attribute_mask & - ~(__DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY | - __DRIVER_CONTEXT_ATTRIB_PRIORITY)) { - *dri_ctx_error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; - return false; - } - - bool notify_reset = - ((ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY) && - ctx_config->reset_strategy != __DRI_CTX_RESET_NO_NOTIFICATION); - - struct brw_context *brw = align_calloc(sizeof(struct brw_context), 16); - if (!brw) { - fprintf(stderr, "%s: failed to alloc context\n", __func__); - *dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY; - return false; - } - brw->mem_ctx = ralloc_context(NULL); - brw->perf_ctx = intel_perf_new_context(brw->mem_ctx); - - driContextPriv->driverPrivate = brw; - brw->driContext = driContextPriv; - brw->screen = screen; - brw->bufmgr = screen->bufmgr; - - brw->has_hiz = devinfo->has_hiz_and_separate_stencil; - brw->has_separate_stencil = devinfo->has_hiz_and_separate_stencil; - - brw->has_swizzling = screen->hw_has_swizzling; - - /* We don't push UBOs on IVB and earlier because the restrictions on - * 3DSTATE_CONSTANT_* make it really annoying to use push constants - * without dynamic state base address. - */ - brw->can_push_ubos = devinfo->verx10 >= 75; - - brw->isl_dev = screen->isl_dev; - - brw->vs.base.stage = MESA_SHADER_VERTEX; - brw->tcs.base.stage = MESA_SHADER_TESS_CTRL; - brw->tes.base.stage = MESA_SHADER_TESS_EVAL; - brw->gs.base.stage = MESA_SHADER_GEOMETRY; - brw->wm.base.stage = MESA_SHADER_FRAGMENT; - brw->cs.base.stage = MESA_SHADER_COMPUTE; - - brw_init_driver_functions(brw, &functions); - - if (notify_reset) - functions.GetGraphicsResetStatus = brw_get_graphics_reset_status; - - brw_process_driconf_options(brw); - - if (api == API_OPENGL_CORE && - driQueryOptionb(&screen->optionCache, "force_compat_profile")) { - api = API_OPENGL_COMPAT; - } - - struct gl_context *ctx = &brw->ctx; - - if (!_mesa_initialize_context(ctx, api, mesaVis, shareCtx, &functions)) { - *dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY; - fprintf(stderr, "%s: failed to init mesa context\n", __func__); - brw_destroy_context(driContextPriv); - return false; - } - - driContextSetFlags(ctx, ctx_config->flags); - - /* Initialize the software rasterizer and helper modules. - * - * As of GL 3.1 core, the gfx4+ driver doesn't need the swrast context for - * software fallbacks (which we have to support on legacy GL to do weird - * glDrawPixels(), glBitmap(), and other functions). - */ - if (api != API_OPENGL_CORE && api != API_OPENGLES2) { - _swrast_CreateContext(ctx); - } - - _vbo_CreateContext(ctx, true); - if (ctx->swrast_context) { - _tnl_CreateContext(ctx); - TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline; - _swsetup_CreateContext(ctx); - - /* Configure swrast to match hardware characteristics: */ - _swrast_allow_pixel_fog(ctx, false); - _swrast_allow_vertex_fog(ctx, true); - } - - _mesa_meta_init(ctx); - - if (INTEL_DEBUG & DEBUG_PERF) - brw->perf_debug = true; - - brw_initialize_cs_context_constants(brw); - brw_initialize_context_constants(brw); - - ctx->Const.ResetStrategy = notify_reset - ? GL_LOSE_CONTEXT_ON_RESET_ARB : GL_NO_RESET_NOTIFICATION_ARB; - - /* Reinitialize the context point state. It depends on ctx->Const values. */ - _mesa_init_point(ctx); - - brw_fbo_init(brw); - - brw_batch_init(brw); - - /* Create a new hardware context. Using a hardware context means that - * our GPU state will be saved/restored on context switch, allowing us - * to assume that the GPU is in the same state we left it in. - * - * This is required for transform feedback buffer offsets, query objects, - * and also allows us to reduce how much state we have to emit. - */ - brw->hw_ctx = brw_create_hw_context(brw->bufmgr); - if (!brw->hw_ctx && devinfo->ver >= 6) { - fprintf(stderr, "Failed to create hardware context.\n"); - brw_destroy_context(driContextPriv); - return false; - } - - if (brw->hw_ctx) { - int hw_priority = INTEL_CONTEXT_MEDIUM_PRIORITY; - if (ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_PRIORITY) { - switch (ctx_config->priority) { - case __DRI_CTX_PRIORITY_LOW: - hw_priority = INTEL_CONTEXT_LOW_PRIORITY; - break; - case __DRI_CTX_PRIORITY_HIGH: - hw_priority = INTEL_CONTEXT_HIGH_PRIORITY; - break; - } - } - if (hw_priority != I915_CONTEXT_DEFAULT_PRIORITY && - brw_hw_context_set_priority(brw->bufmgr, brw->hw_ctx, hw_priority)) { - fprintf(stderr, - "Failed to set priority [%d:%d] for hardware context.\n", - ctx_config->priority, hw_priority); - brw_destroy_context(driContextPriv); - return false; - } - } - - if (brw_init_pipe_control(brw, devinfo)) { - *dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY; - brw_destroy_context(driContextPriv); - return false; - } - - brw_upload_init(&brw->upload, brw->bufmgr, 65536); - - brw_init_state(brw); - - brw_init_extensions(ctx); - - brw_init_surface_formats(brw); - - brw_blorp_init(brw); - - brw->urb.size = devinfo->urb.size; - - if (devinfo->ver == 6) - brw->urb.gs_present = false; - - brw->prim_restart.in_progress = false; - brw->prim_restart.enable_cut_index = false; - brw->gs.enabled = false; - brw->clip.viewport_count = 1; - - brw->predicate.state = BRW_PREDICATE_STATE_RENDER; - - brw->max_gtt_map_object_size = screen->max_gtt_map_object_size; - - ctx->VertexProgram._MaintainTnlProgram = true; - ctx->FragmentProgram._MaintainTexEnvProgram = true; - _mesa_reset_vertex_processing_mode(ctx); - - brw_draw_init( brw ); - - if ((ctx_config->flags & __DRI_CTX_FLAG_DEBUG) != 0) { - /* Turn on some extra GL_ARB_debug_output generation. */ - brw->perf_debug = true; - } - - if ((ctx_config->flags & __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS) != 0) { - ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB; - ctx->Const.RobustAccess = GL_TRUE; - } - - if (INTEL_DEBUG & DEBUG_SHADER_TIME) - brw_init_shader_time(brw); - - _mesa_override_extensions(ctx); - _mesa_compute_version(ctx); - -#ifndef NDEBUG - /* Enforce that the version of the context that was created is at least as - * high as the version that was advertised via GLX / EGL / whatever window - * system. - */ - const __DRIscreen *const dri_screen = brw->screen->driScrnPriv; - - switch (api) { - case API_OPENGL_COMPAT: - assert(ctx->Version >= dri_screen->max_gl_compat_version); - break; - case API_OPENGLES: - assert(ctx->Version >= dri_screen->max_gl_es1_version); - break; - case API_OPENGLES2: - assert(ctx->Version >= dri_screen->max_gl_es2_version); - break; - case API_OPENGL_CORE: - assert(ctx->Version >= dri_screen->max_gl_core_version); - break; - } -#endif - - /* GL_ARB_gl_spirv */ - if (ctx->Extensions.ARB_gl_spirv) { - brw_initialize_spirv_supported_capabilities(brw); - - if (ctx->Extensions.ARB_spirv_extensions) { - /* GL_ARB_spirv_extensions */ - ctx->Const.SpirVExtensions = MALLOC_STRUCT(spirv_supported_extensions); - _mesa_fill_supported_spirv_extensions(ctx->Const.SpirVExtensions, - &ctx->Const.SpirVCapabilities); - } - } - - _mesa_initialize_dispatch_tables(ctx); - _mesa_initialize_vbo_vtxfmt(ctx); - - if (ctx->Extensions.INTEL_performance_query) - brw_init_performance_queries(brw); - - brw->ctx.Cache = brw->screen->disk_cache; - - if (driContextPriv->driScreenPriv->dri2.backgroundCallable && - driQueryOptionb(&screen->optionCache, "mesa_glthread")) { - /* Loader supports multithreading, and so do we. */ - _mesa_glthread_init(ctx); - } - - return true; -} - -void -brw_destroy_context(__DRIcontext *driContextPriv) -{ - struct brw_context *brw = - (struct brw_context *) driContextPriv->driverPrivate; - struct gl_context *ctx = &brw->ctx; - - GET_CURRENT_CONTEXT(curctx); - - if (curctx == NULL) { - /* No current context, but we need one to release - * renderbuffer surface when we release framebuffer. - * So temporarily bind the context. - */ - _mesa_make_current(ctx, NULL, NULL); - } - - _mesa_glthread_destroy(&brw->ctx); - - _mesa_meta_free(&brw->ctx); - - if (INTEL_DEBUG & DEBUG_SHADER_TIME) { - /* Force a report. */ - brw->shader_time.report_time = 0; - - brw_collect_and_report_shader_time(brw); - brw_destroy_shader_time(brw); - } - - blorp_finish(&brw->blorp); - - brw_destroy_state(brw); - brw_draw_destroy(brw); - - brw_bo_unreference(brw->curbe.curbe_bo); - - brw_bo_unreference(brw->vs.base.scratch_bo); - brw_bo_unreference(brw->tcs.base.scratch_bo); - brw_bo_unreference(brw->tes.base.scratch_bo); - brw_bo_unreference(brw->gs.base.scratch_bo); - brw_bo_unreference(brw->wm.base.scratch_bo); - - brw_bo_unreference(brw->vs.base.push_const_bo); - brw_bo_unreference(brw->tcs.base.push_const_bo); - brw_bo_unreference(brw->tes.base.push_const_bo); - brw_bo_unreference(brw->gs.base.push_const_bo); - brw_bo_unreference(brw->wm.base.push_const_bo); - - brw_destroy_hw_context(brw->bufmgr, brw->hw_ctx); - - if (ctx->swrast_context) { - _swsetup_DestroyContext(&brw->ctx); - _tnl_DestroyContext(&brw->ctx); - } - _vbo_DestroyContext(&brw->ctx); - - if (ctx->swrast_context) - _swrast_DestroyContext(&brw->ctx); - - brw_fini_pipe_control(brw); - brw_batch_free(&brw->batch); - - brw_bo_unreference(brw->throttle_batch[1]); - brw_bo_unreference(brw->throttle_batch[0]); - brw->throttle_batch[1] = NULL; - brw->throttle_batch[0] = NULL; - - /* free the Mesa context */ - _mesa_free_context_data(&brw->ctx, true); - - ralloc_free(brw->mem_ctx); - align_free(brw); - driContextPriv->driverPrivate = NULL; -} - -GLboolean -brw_unbind_context(__DRIcontext *driContextPriv) -{ - struct gl_context *ctx = driContextPriv->driverPrivate; - _mesa_glthread_finish(ctx); - - /* Unset current context and dispath table */ - _mesa_make_current(NULL, NULL, NULL); - - return true; -} - -/** - * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior - * on window system framebuffers. - * - * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if - * your renderbuffer can do sRGB encode, and you can flip a switch that does - * sRGB encode if the renderbuffer can handle it. You can ask specifically - * for a visual where you're guaranteed to be capable, but it turns out that - * everyone just makes all their ARGB8888 visuals capable and doesn't offer - * incapable ones, because there's no difference between the two in resources - * used. Applications thus get built that accidentally rely on the default - * visual choice being sRGB, so we make ours sRGB capable. Everything sounds - * great... - * - * But for GLES2/3, they decided that it was silly to not turn on sRGB encode - * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent. - * So they removed the enable knob and made it "if the renderbuffer is sRGB - * capable, do sRGB encode". Then, for your window system renderbuffers, you - * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals - * and get no sRGB encode (assuming that both kinds of visual are available). - * Thus our choice to support sRGB by default on our visuals for desktop would - * result in broken rendering of GLES apps that aren't expecting sRGB encode. - * - * Unfortunately, renderbuffer setup happens before a context is created. So - * in brw_screen.c we always set up sRGB, and here, if you're a GLES2/3 - * context (without an sRGB visual), we go turn that back off before anyone - * finds out. - */ -static void -brw_gles3_srgb_workaround(struct brw_context *brw, struct gl_framebuffer *fb) -{ - struct gl_context *ctx = &brw->ctx; - - if (_mesa_is_desktop_gl(ctx) || !fb->Visual.sRGBCapable) - return; - - for (int i = 0; i < BUFFER_COUNT; i++) { - struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer; - - /* Check if sRGB was specifically asked for. */ - struct brw_renderbuffer *irb = brw_get_renderbuffer(fb, i); - if (irb && irb->need_srgb) - return; - - if (rb) - rb->Format = _mesa_get_srgb_format_linear(rb->Format); - } - /* Disable sRGB from framebuffers that are not compatible. */ - fb->Visual.sRGBCapable = false; -} - -GLboolean -brw_make_current(__DRIcontext *driContextPriv, - __DRIdrawable *driDrawPriv, - __DRIdrawable *driReadPriv) -{ - struct brw_context *brw; - - if (driContextPriv) - brw = (struct brw_context *) driContextPriv->driverPrivate; - else - brw = NULL; - - if (driContextPriv) { - struct gl_context *ctx = &brw->ctx; - struct gl_framebuffer *fb, *readFb; - - if (driDrawPriv == NULL) { - fb = _mesa_get_incomplete_framebuffer(); - } else { - fb = driDrawPriv->driverPrivate; - driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1; - } - - if (driReadPriv == NULL) { - readFb = _mesa_get_incomplete_framebuffer(); - } else { - readFb = driReadPriv->driverPrivate; - driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1; - } - - /* The sRGB workaround changes the renderbuffer's format. We must change - * the format before the renderbuffer's miptree get's allocated, otherwise - * the formats of the renderbuffer and its miptree will differ. - */ - brw_gles3_srgb_workaround(brw, fb); - brw_gles3_srgb_workaround(brw, readFb); - - /* If the context viewport hasn't been initialized, force a call out to - * the loader to get buffers so we have a drawable size for the initial - * viewport. */ - if (!brw->ctx.ViewportInitialized) - brw_prepare_render(brw); - - _mesa_make_current(ctx, fb, readFb); - } else { - GET_CURRENT_CONTEXT(ctx); - _mesa_glthread_finish(ctx); - _mesa_make_current(NULL, NULL, NULL); - } - - return true; -} - -void -brw_resolve_for_dri2_flush(struct brw_context *brw, - __DRIdrawable *drawable) -{ - const struct intel_device_info *devinfo = &brw->screen->devinfo; - - if (devinfo->ver < 6) { - /* MSAA and fast color clear are not supported, so don't waste time - * checking whether a resolve is needed. - */ - return; - } - - struct gl_framebuffer *fb = drawable->driverPrivate; - struct brw_renderbuffer *rb; - - /* Usually, only the back buffer will need to be downsampled. However, - * the front buffer will also need it if the user has rendered into it. - */ - static const gl_buffer_index buffers[2] = { - BUFFER_BACK_LEFT, - BUFFER_FRONT_LEFT, - }; - - for (int i = 0; i < 2; ++i) { - rb = brw_get_renderbuffer(fb, buffers[i]); - if (rb == NULL || rb->mt == NULL) - continue; - if (rb->mt->surf.samples == 1) { - assert(rb->mt_layer == 0 && rb->mt_level == 0 && - rb->layer_count == 1); - brw_miptree_prepare_external(brw, rb->mt); - } else { - brw_renderbuffer_downsample(brw, rb); - - /* Call prepare_external on the single-sample miptree to do any - * needed resolves prior to handing it off to the window system. - * This is needed in the case that rb->singlesample_mt is Y-tiled - * with CCS_E enabled but without I915_FORMAT_MOD_Y_TILED_CCS_E. In - * this case, the MSAA resolve above will write compressed data into - * rb->singlesample_mt. - * - * TODO: Some day, if we decide to care about the tiny performance - * hit we're taking by doing the MSAA resolve and then a CCS resolve, - * we could detect this case and just allocate the single-sampled - * miptree without aux. However, that would be a lot of plumbing and - * this is a rather exotic case so it's not really worth it. - */ - brw_miptree_prepare_external(brw, rb->singlesample_mt); - } - } -} - -static unsigned -brw_bits_per_pixel(const struct brw_renderbuffer *rb) -{ - return _mesa_get_format_bytes(brw_rb_format(rb)) * 8; -} - -static void -brw_query_dri2_buffers(struct brw_context *brw, - __DRIdrawable *drawable, - __DRIbuffer **buffers, - int *count); - -static void -brw_process_dri2_buffer(struct brw_context *brw, - __DRIdrawable *drawable, - __DRIbuffer *buffer, - struct brw_renderbuffer *rb, - const char *buffer_name); - -static void -brw_update_image_buffers(struct brw_context *brw, __DRIdrawable *drawable); - -static void -brw_update_dri2_buffers(struct brw_context *brw, __DRIdrawable *drawable) -{ - struct gl_framebuffer *fb = drawable->driverPrivate; - struct brw_renderbuffer *rb; - __DRIbuffer *buffers = NULL; - int count; - const char *region_name; - - /* Set this up front, so that in case our buffers get invalidated - * while we're getting new buffers, we don't clobber the stamp and - * thus ignore the invalidate. */ - drawable->lastStamp = drawable->dri2.stamp; - - if (INTEL_DEBUG & DEBUG_DRI) - fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable); - - brw_query_dri2_buffers(brw, drawable, &buffers, &count); - - if (buffers == NULL) - return; - - for (int i = 0; i < count; i++) { - switch (buffers[i].attachment) { - case __DRI_BUFFER_FRONT_LEFT: - rb = brw_get_renderbuffer(fb, BUFFER_FRONT_LEFT); - region_name = "dri2 front buffer"; - break; - - case __DRI_BUFFER_FAKE_FRONT_LEFT: - rb = brw_get_renderbuffer(fb, BUFFER_FRONT_LEFT); - region_name = "dri2 fake front buffer"; - break; - - case __DRI_BUFFER_BACK_LEFT: - rb = brw_get_renderbuffer(fb, BUFFER_BACK_LEFT); - region_name = "dri2 back buffer"; - break; - - case __DRI_BUFFER_DEPTH: - case __DRI_BUFFER_HIZ: - case __DRI_BUFFER_DEPTH_STENCIL: - case __DRI_BUFFER_STENCIL: - case __DRI_BUFFER_ACCUM: - default: - fprintf(stderr, - "unhandled buffer attach event, attachment type %d\n", - buffers[i].attachment); - return; - } - - brw_process_dri2_buffer(brw, drawable, &buffers[i], rb, region_name); - } - -} - -void -brw_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable) -{ - struct brw_context *brw = context->driverPrivate; - __DRIscreen *dri_screen = brw->screen->driScrnPriv; - - /* Set this up front, so that in case our buffers get invalidated - * while we're getting new buffers, we don't clobber the stamp and - * thus ignore the invalidate. */ - drawable->lastStamp = drawable->dri2.stamp; - - if (INTEL_DEBUG & DEBUG_DRI) - fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable); - - if (dri_screen->image.loader) - brw_update_image_buffers(brw, drawable); - else - brw_update_dri2_buffers(brw, drawable); - - driUpdateFramebufferSize(&brw->ctx, drawable); -} - -/** - * intel_prepare_render should be called anywhere that curent read/drawbuffer - * state is required. - */ -void -brw_prepare_render(struct brw_context *brw) -{ - struct gl_context *ctx = &brw->ctx; - __DRIcontext *driContext = brw->driContext; - __DRIdrawable *drawable; - - drawable = driContext->driDrawablePriv; - if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) { - if (drawable->lastStamp != drawable->dri2.stamp) - brw_update_renderbuffers(driContext, drawable); - driContext->dri2.draw_stamp = drawable->dri2.stamp; - } - - drawable = driContext->driReadablePriv; - if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) { - if (drawable->lastStamp != drawable->dri2.stamp) - brw_update_renderbuffers(driContext, drawable); - driContext->dri2.read_stamp = drawable->dri2.stamp; - } - - /* If we're currently rendering to the front buffer, the rendering - * that will happen next will probably dirty the front buffer. So - * mark it as dirty here. - */ - if (_mesa_is_front_buffer_drawing(ctx->DrawBuffer) && - ctx->DrawBuffer != _mesa_get_incomplete_framebuffer()) { - brw->front_buffer_dirty = true; - } - - if (brw->is_shared_buffer_bound) { - /* Subsequent rendering will probably dirty the shared buffer. */ - brw->is_shared_buffer_dirty = true; - } -} - -/** - * \brief Query DRI2 to obtain a DRIdrawable's buffers. - * - * To determine which DRI buffers to request, examine the renderbuffers - * attached to the drawable's framebuffer. Then request the buffers with - * DRI2GetBuffers() or DRI2GetBuffersWithFormat(). - * - * This is called from brw_update_renderbuffers(). - * - * \param drawable Drawable whose buffers are queried. - * \param buffers [out] List of buffers returned by DRI2 query. - * \param buffer_count [out] Number of buffers returned. - * - * \see brw_update_renderbuffers() - * \see DRI2GetBuffers() - * \see DRI2GetBuffersWithFormat() - */ -static void -brw_query_dri2_buffers(struct brw_context *brw, - __DRIdrawable *drawable, - __DRIbuffer **buffers, - int *buffer_count) -{ - __DRIscreen *dri_screen = brw->screen->driScrnPriv; - struct gl_framebuffer *fb = drawable->driverPrivate; - int i = 0; - unsigned attachments[__DRI_BUFFER_COUNT]; - - struct brw_renderbuffer *front_rb; - struct brw_renderbuffer *back_rb; - - front_rb = brw_get_renderbuffer(fb, BUFFER_FRONT_LEFT); - back_rb = brw_get_renderbuffer(fb, BUFFER_BACK_LEFT); - - memset(attachments, 0, sizeof(attachments)); - if ((_mesa_is_front_buffer_drawing(fb) || - _mesa_is_front_buffer_reading(fb) || - !back_rb) && front_rb) { - /* If a fake front buffer is in use, then querying for - * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from - * the real front buffer to the fake front buffer. So before doing the - * query, we need to make sure all the pending drawing has landed in the - * real front buffer. - */ - brw_batch_flush(brw); - brw_flush_front(&brw->ctx); - - attachments[i++] = __DRI_BUFFER_FRONT_LEFT; - attachments[i++] = brw_bits_per_pixel(front_rb); - } else if (front_rb && brw->front_buffer_dirty) { - /* We have pending front buffer rendering, but we aren't querying for a - * front buffer. If the front buffer we have is a fake front buffer, - * the X server is going to throw it away when it processes the query. - * So before doing the query, make sure all the pending drawing has - * landed in the real front buffer. - */ - brw_batch_flush(brw); - brw_flush_front(&brw->ctx); - } - - if (back_rb) { - attachments[i++] = __DRI_BUFFER_BACK_LEFT; - attachments[i++] = brw_bits_per_pixel(back_rb); - } - - assert(i <= ARRAY_SIZE(attachments)); - - *buffers = - dri_screen->dri2.loader->getBuffersWithFormat(drawable, - &drawable->w, - &drawable->h, - attachments, i / 2, - buffer_count, - drawable->loaderPrivate); -} - -/** - * \brief Assign a DRI buffer's DRM region to a renderbuffer. - * - * This is called from brw_update_renderbuffers(). - * - * \par Note: - * DRI buffers whose attachment point is DRI2BufferStencil or - * DRI2BufferDepthStencil are handled as special cases. - * - * \param buffer_name is a human readable name, such as "dri2 front buffer", - * that is passed to brw_bo_gem_create_from_name(). - * - * \see brw_update_renderbuffers() - */ -static void -brw_process_dri2_buffer(struct brw_context *brw, - __DRIdrawable *drawable, - __DRIbuffer *buffer, - struct brw_renderbuffer *rb, - const char *buffer_name) -{ - struct gl_framebuffer *fb = drawable->driverPrivate; - struct brw_bo *bo; - - if (!rb) - return; - - unsigned num_samples = rb->Base.Base.NumSamples; - - /* We try to avoid closing and reopening the same BO name, because the first - * use of a mapping of the buffer involves a bunch of page faulting which is - * moderately expensive. - */ - struct brw_mipmap_tree *last_mt; - if (num_samples == 0) - last_mt = rb->mt; - else - last_mt = rb->singlesample_mt; - - uint32_t old_name = 0; - if (last_mt) { - /* The bo already has a name because the miptree was created by a - * previous call to brw_process_dri2_buffer(). If a bo already has a - * name, then brw_bo_flink() is a low-cost getter. It does not - * create a new name. - */ - brw_bo_flink(last_mt->bo, &old_name); - } - - if (old_name == buffer->name) - return; - - if (INTEL_DEBUG & DEBUG_DRI) { - fprintf(stderr, - "attaching buffer %d, at %d, cpp %d, pitch %d\n", - buffer->name, buffer->attachment, - buffer->cpp, buffer->pitch); - } - - bo = brw_bo_gem_create_from_name(brw->bufmgr, buffer_name, - buffer->name); - if (!bo) { - fprintf(stderr, - "Failed to open BO for returned DRI2 buffer " - "(%dx%d, %s, named %d).\n" - "This is likely a bug in the X Server that will lead to a " - "crash soon.\n", - drawable->w, drawable->h, buffer_name, buffer->name); - return; - } - - uint32_t tiling, swizzle; - brw_bo_get_tiling(bo, &tiling, &swizzle); - - struct brw_mipmap_tree *mt = - brw_miptree_create_for_bo(brw, - bo, - brw_rb_format(rb), - 0, - drawable->w, - drawable->h, - 1, - buffer->pitch, - isl_tiling_from_i915_tiling(tiling), - MIPTREE_CREATE_DEFAULT); - if (!mt) { - brw_bo_unreference(bo); - return; - } - - /* We got this BO from X11. We cana't assume that we have coherent texture - * access because X may suddenly decide to use it for scan-out which would - * destroy coherency. - */ - bo->cache_coherent = false; - - if (!brw_update_winsys_renderbuffer_miptree(brw, rb, mt, - drawable->w, drawable->h, - buffer->pitch)) { - brw_bo_unreference(bo); - brw_miptree_release(&mt); - return; - } - - if (_mesa_is_front_buffer_drawing(fb) && - (buffer->attachment == __DRI_BUFFER_FRONT_LEFT || - buffer->attachment == __DRI_BUFFER_FAKE_FRONT_LEFT) && - rb->Base.Base.NumSamples > 1) { - brw_renderbuffer_upsample(brw, rb); - } - - assert(rb->mt); - - brw_bo_unreference(bo); -} - -/** - * \brief Query DRI image loader to obtain a DRIdrawable's buffers. - * - * To determine which DRI buffers to request, examine the renderbuffers - * attached to the drawable's framebuffer. Then request the buffers from - * the image loader - * - * This is called from brw_update_renderbuffers(). - * - * \param drawable Drawable whose buffers are queried. - * \param buffers [out] List of buffers returned by DRI2 query. - * \param buffer_count [out] Number of buffers returned. - * - * \see brw_update_renderbuffers() - */ - -static void -brw_update_image_buffer(struct brw_context *intel, - __DRIdrawable *drawable, - struct brw_renderbuffer *rb, - __DRIimage *buffer, - enum __DRIimageBufferMask buffer_type) -{ - struct gl_framebuffer *fb = drawable->driverPrivate; - - if (!rb || !buffer->bo) - return; - - unsigned num_samples = rb->Base.Base.NumSamples; - - /* Check and see if we're already bound to the right - * buffer object - */ - struct brw_mipmap_tree *last_mt; - if (num_samples == 0) - last_mt = rb->mt; - else - last_mt = rb->singlesample_mt; - - if (last_mt && last_mt->bo == buffer->bo) { - if (buffer_type == __DRI_IMAGE_BUFFER_SHARED) { - brw_miptree_make_shareable(intel, last_mt); - } - return; - } - - /* Only allow internal compression if samples == 0. For multisampled - * window system buffers, the only thing the single-sampled buffer is used - * for is as a resolve target. If we do any compression beyond what is - * supported by the window system, we will just have to resolve so it's - * probably better to just not bother. - */ - const bool allow_internal_aux = (num_samples == 0); - - struct brw_mipmap_tree *mt = - brw_miptree_create_for_dri_image(intel, buffer, GL_TEXTURE_2D, - brw_rb_format(rb), - allow_internal_aux); - if (!mt) - return; - - if (!brw_update_winsys_renderbuffer_miptree(intel, rb, mt, - buffer->width, buffer->height, - buffer->pitch)) { - brw_miptree_release(&mt); - return; - } - - if (_mesa_is_front_buffer_drawing(fb) && - buffer_type == __DRI_IMAGE_BUFFER_FRONT && - rb->Base.Base.NumSamples > 1) { - brw_renderbuffer_upsample(intel, rb); - } - - if (buffer_type == __DRI_IMAGE_BUFFER_SHARED) { - /* The compositor and the application may access this image - * concurrently. The display hardware may even scanout the image while - * the GPU is rendering to it. Aux surfaces cause difficulty with - * concurrent access, so permanently disable aux for this miptree. - * - * Perhaps we could improve overall application performance by - * re-enabling the aux surface when EGL_RENDER_BUFFER transitions to - * EGL_BACK_BUFFER, then disabling it again when EGL_RENDER_BUFFER - * returns to EGL_SINGLE_BUFFER. I expect the wins and losses with this - * approach to be highly dependent on the application's GL usage. - * - * I [chadv] expect clever disabling/reenabling to be counterproductive - * in the use cases I care about: applications that render nearly - * realtime handwriting to the surface while possibly undergiong - * simultaneously scanout as a display plane. The app requires low - * render latency. Even though the app spends most of its time in - * shared-buffer mode, it also frequently transitions between - * shared-buffer (EGL_SINGLE_BUFFER) and double-buffer (EGL_BACK_BUFFER) - * mode. Visual sutter during the transitions should be avoided. - * - * In this case, I [chadv] believe reducing the GPU workload at - * shared-buffer/double-buffer transitions would offer a smoother app - * experience than any savings due to aux compression. But I've - * collected no data to prove my theory. - */ - brw_miptree_make_shareable(intel, mt); - } -} - -static void -brw_update_image_buffers(struct brw_context *brw, __DRIdrawable *drawable) -{ - struct gl_framebuffer *fb = drawable->driverPrivate; - __DRIscreen *dri_screen = brw->screen->driScrnPriv; - struct brw_renderbuffer *front_rb; - struct brw_renderbuffer *back_rb; - struct __DRIimageList images; - mesa_format format; - uint32_t buffer_mask = 0; - int ret; - - front_rb = brw_get_renderbuffer(fb, BUFFER_FRONT_LEFT); - back_rb = brw_get_renderbuffer(fb, BUFFER_BACK_LEFT); - - if (back_rb) - format = brw_rb_format(back_rb); - else if (front_rb) - format = brw_rb_format(front_rb); - else - return; - - if (front_rb && (_mesa_is_front_buffer_drawing(fb) || - _mesa_is_front_buffer_reading(fb) || !back_rb)) { - buffer_mask |= __DRI_IMAGE_BUFFER_FRONT; - } - - if (back_rb) - buffer_mask |= __DRI_IMAGE_BUFFER_BACK; - - ret = dri_screen->image.loader->getBuffers(drawable, - driGLFormatToImageFormat(format), - &drawable->dri2.stamp, - drawable->loaderPrivate, - buffer_mask, - &images); - if (!ret) - return; - - if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) { - drawable->w = images.front->width; - drawable->h = images.front->height; - brw_update_image_buffer(brw, drawable, front_rb, images.front, - __DRI_IMAGE_BUFFER_FRONT); - } - - if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) { - drawable->w = images.back->width; - drawable->h = images.back->height; - brw_update_image_buffer(brw, drawable, back_rb, images.back, - __DRI_IMAGE_BUFFER_BACK); - } - - if (images.image_mask & __DRI_IMAGE_BUFFER_SHARED) { - assert(images.image_mask == __DRI_IMAGE_BUFFER_SHARED); - drawable->w = images.back->width; - drawable->h = images.back->height; - brw_update_image_buffer(brw, drawable, back_rb, images.back, - __DRI_IMAGE_BUFFER_SHARED); - brw->is_shared_buffer_bound = true; - } else { - brw->is_shared_buffer_bound = false; - brw->is_shared_buffer_dirty = false; - } -} |