| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "impeller/renderer/command.h" |
| |
| #include <utility> |
| |
| #include "impeller/base/validation.h" |
| #include "impeller/renderer/formats.h" |
| #include "impeller/renderer/vertex_descriptor.h" |
| |
| namespace impeller { |
| |
| bool Command::BindVertices(const VertexBuffer& buffer) { |
| if (buffer.index_type == IndexType::kUnknown) { |
| VALIDATION_LOG << "Cannot bind vertex buffer with an unknown index type."; |
| return false; |
| } |
| |
| vertex_bindings.buffers[VertexDescriptor::kReservedVertexBufferIndex] = { |
| nullptr, buffer.vertex_buffer}; |
| index_buffer = buffer.index_buffer; |
| index_count = buffer.index_count; |
| index_type = buffer.index_type; |
| return true; |
| } |
| |
| BufferView Command::GetVertexBuffer() const { |
| auto found = vertex_bindings.buffers.find( |
| VertexDescriptor::kReservedVertexBufferIndex); |
| if (found != vertex_bindings.buffers.end()) { |
| return found->second.resource; |
| } |
| return {}; |
| } |
| |
| bool Command::BindResource(ShaderStage stage, |
| const ShaderUniformSlot& slot, |
| const ShaderMetadata& metadata, |
| const BufferView& view) { |
| if (!view) { |
| return false; |
| } |
| |
| switch (stage) { |
| case ShaderStage::kVertex: |
| vertex_bindings.uniforms[slot.ext_res_0] = slot; |
| vertex_bindings.buffers[slot.ext_res_0] = {&metadata, view}; |
| return true; |
| case ShaderStage::kFragment: |
| fragment_bindings.uniforms[slot.ext_res_0] = slot; |
| fragment_bindings.buffers[slot.ext_res_0] = {&metadata, view}; |
| return true; |
| case ShaderStage::kCompute: |
| VALIDATION_LOG << "Use ComputeCommands for compute shader stages."; |
| case ShaderStage::kTessellationControl: |
| case ShaderStage::kTessellationEvaluation: |
| case ShaderStage::kUnknown: |
| return false; |
| } |
| |
| return false; |
| } |
| |
| bool Command::BindResource(ShaderStage stage, |
| const SampledImageSlot& slot, |
| const ShaderMetadata& metadata, |
| const std::shared_ptr<const Texture>& texture) { |
| if (!texture || !texture->IsValid()) { |
| return false; |
| } |
| |
| if (!slot.HasTexture()) { |
| return true; |
| } |
| |
| switch (stage) { |
| case ShaderStage::kVertex: |
| vertex_bindings.textures[slot.texture_index] = {&metadata, texture}; |
| return true; |
| case ShaderStage::kFragment: |
| fragment_bindings.textures[slot.texture_index] = {&metadata, texture}; |
| return true; |
| case ShaderStage::kCompute: |
| VALIDATION_LOG << "Use ComputeCommands for compute shader stages."; |
| case ShaderStage::kTessellationControl: |
| case ShaderStage::kTessellationEvaluation: |
| case ShaderStage::kUnknown: |
| return false; |
| } |
| |
| return false; |
| } |
| |
| bool Command::BindResource(ShaderStage stage, |
| const SampledImageSlot& slot, |
| const ShaderMetadata& metadata, |
| const std::shared_ptr<const Sampler>& sampler) { |
| if (!sampler || !sampler->IsValid()) { |
| return false; |
| } |
| |
| if (!slot.HasSampler()) { |
| return true; |
| } |
| |
| switch (stage) { |
| case ShaderStage::kVertex: |
| vertex_bindings.samplers[slot.sampler_index] = {&metadata, sampler}; |
| vertex_bindings.sampled_images[slot.sampler_index] = slot; |
| return true; |
| case ShaderStage::kFragment: |
| fragment_bindings.samplers[slot.sampler_index] = {&metadata, sampler}; |
| fragment_bindings.sampled_images[slot.sampler_index] = slot; |
| return true; |
| case ShaderStage::kCompute: |
| VALIDATION_LOG << "Use ComputeCommands for compute shader stages."; |
| case ShaderStage::kUnknown: |
| case ShaderStage::kTessellationControl: |
| case ShaderStage::kTessellationEvaluation: |
| return false; |
| } |
| |
| return false; |
| } |
| |
| bool Command::BindResource(ShaderStage stage, |
| const SampledImageSlot& slot, |
| const ShaderMetadata& metadata, |
| const std::shared_ptr<const Texture>& texture, |
| const std::shared_ptr<const Sampler>& sampler) { |
| return BindResource(stage, slot, metadata, texture) && |
| BindResource(stage, slot, metadata, sampler); |
| } |
| |
| } // namespace impeller |