blob: 60c6a062db1684a1b914dd778d420b5d31f877b0 [file] [log] [blame]
// 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/entity/contents/content_context.h"
#include <sstream>
#include "impeller/renderer/command_buffer.h"
#include "impeller/renderer/formats.h"
#include "impeller/renderer/render_pass.h"
#include "impeller/renderer/render_target.h"
namespace impeller {
void ContentContextOptions::ApplyToPipelineDescriptor(
PipelineDescriptor& desc) const {
auto pipeline_blend = blend_mode;
if (blend_mode > Entity::BlendMode::kLastPipelineBlendMode) {
VALIDATION_LOG << "Cannot use blend mode " << static_cast<int>(blend_mode)
<< " as a pipeline blend.";
pipeline_blend = Entity::BlendMode::kSourceOver;
}
desc.SetSampleCount(sample_count);
ColorAttachmentDescriptor color0 = *desc.GetColorAttachmentDescriptor(0u);
color0.alpha_blend_op = BlendOperation::kAdd;
color0.color_blend_op = BlendOperation::kAdd;
static_assert(Entity::BlendMode::kLastPipelineBlendMode ==
Entity::BlendMode::kModulate);
switch (pipeline_blend) {
case Entity::BlendMode::kClear:
color0.dst_alpha_blend_factor = BlendFactor::kZero;
color0.dst_color_blend_factor = BlendFactor::kZero;
color0.src_alpha_blend_factor = BlendFactor::kZero;
color0.src_color_blend_factor = BlendFactor::kZero;
break;
case Entity::BlendMode::kSource:
color0.dst_alpha_blend_factor = BlendFactor::kZero;
color0.dst_color_blend_factor = BlendFactor::kZero;
color0.src_alpha_blend_factor = BlendFactor::kOne;
color0.src_color_blend_factor = BlendFactor::kOne;
break;
case Entity::BlendMode::kDestination:
color0.dst_alpha_blend_factor = BlendFactor::kDestinationAlpha;
color0.dst_color_blend_factor = BlendFactor::kOne;
color0.src_alpha_blend_factor = BlendFactor::kZero;
color0.src_color_blend_factor = BlendFactor::kZero;
break;
case Entity::BlendMode::kSourceOver:
color0.dst_alpha_blend_factor = BlendFactor::kOneMinusSourceAlpha;
color0.dst_color_blend_factor = BlendFactor::kOneMinusSourceAlpha;
color0.src_alpha_blend_factor = BlendFactor::kOne;
color0.src_color_blend_factor = BlendFactor::kOne;
break;
case Entity::BlendMode::kDestinationOver:
color0.dst_alpha_blend_factor = BlendFactor::kDestinationAlpha;
color0.dst_color_blend_factor = BlendFactor::kOne;
color0.src_alpha_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
color0.src_color_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
break;
case Entity::BlendMode::kSourceIn:
color0.dst_alpha_blend_factor = BlendFactor::kZero;
color0.dst_color_blend_factor = BlendFactor::kZero;
color0.src_alpha_blend_factor = BlendFactor::kDestinationAlpha;
color0.src_color_blend_factor = BlendFactor::kDestinationAlpha;
break;
case Entity::BlendMode::kDestinationIn:
color0.dst_alpha_blend_factor = BlendFactor::kSourceAlpha;
color0.dst_color_blend_factor = BlendFactor::kSourceAlpha;
color0.src_alpha_blend_factor = BlendFactor::kZero;
color0.src_color_blend_factor = BlendFactor::kZero;
break;
case Entity::BlendMode::kSourceOut:
color0.dst_alpha_blend_factor = BlendFactor::kZero;
color0.dst_color_blend_factor = BlendFactor::kZero;
color0.src_alpha_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
color0.src_color_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
break;
case Entity::BlendMode::kDestinationOut:
color0.dst_alpha_blend_factor = BlendFactor::kOneMinusSourceAlpha;
color0.dst_color_blend_factor = BlendFactor::kOneMinusSourceAlpha;
color0.src_alpha_blend_factor = BlendFactor::kZero;
color0.src_color_blend_factor = BlendFactor::kZero;
break;
case Entity::BlendMode::kSourceATop:
color0.dst_alpha_blend_factor = BlendFactor::kOneMinusSourceAlpha;
color0.dst_color_blend_factor = BlendFactor::kOneMinusSourceAlpha;
color0.src_alpha_blend_factor = BlendFactor::kDestinationAlpha;
color0.src_color_blend_factor = BlendFactor::kDestinationAlpha;
break;
case Entity::BlendMode::kDestinationATop:
color0.dst_alpha_blend_factor = BlendFactor::kSourceAlpha;
color0.dst_color_blend_factor = BlendFactor::kSourceAlpha;
color0.src_alpha_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
color0.src_color_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
break;
case Entity::BlendMode::kXor:
color0.dst_alpha_blend_factor = BlendFactor::kOneMinusSourceAlpha;
color0.dst_color_blend_factor = BlendFactor::kOneMinusSourceAlpha;
color0.src_alpha_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
color0.src_color_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
break;
case Entity::BlendMode::kPlus:
color0.dst_alpha_blend_factor = BlendFactor::kOne;
color0.dst_color_blend_factor = BlendFactor::kOne;
color0.src_alpha_blend_factor = BlendFactor::kOne;
color0.src_color_blend_factor = BlendFactor::kOne;
break;
case Entity::BlendMode::kModulate:
// kSourceColor and kDestinationColor override the alpha blend factor.
color0.dst_alpha_blend_factor = BlendFactor::kZero;
color0.dst_color_blend_factor = BlendFactor::kSourceColor;
color0.src_alpha_blend_factor = BlendFactor::kZero;
color0.src_color_blend_factor = BlendFactor::kZero;
break;
default:
FML_UNREACHABLE();
}
desc.SetColorAttachmentDescriptor(0u, std::move(color0));
if (desc.GetFrontStencilAttachmentDescriptor().has_value()) {
StencilAttachmentDescriptor stencil =
desc.GetFrontStencilAttachmentDescriptor().value();
stencil.stencil_compare = stencil_compare;
stencil.depth_stencil_pass = stencil_operation;
desc.SetStencilAttachmentDescriptors(stencil);
}
}
template <typename PipelineT>
static std::unique_ptr<PipelineT> CreateDefaultPipeline(
const Context& context) {
auto desc = PipelineT::Builder::MakeDefaultPipelineDescriptor(context);
if (!desc.has_value()) {
return nullptr;
}
// Apply default ContentContextOptions to the descriptor.
ContentContextOptions{}.ApplyToPipelineDescriptor(*desc);
return std::make_unique<PipelineT>(context, desc);
}
ContentContext::ContentContext(std::shared_ptr<Context> context)
: context_(std::move(context)) {
if (!context_ || !context_->IsValid()) {
return;
}
gradient_fill_pipelines_[{}] =
CreateDefaultPipeline<GradientFillPipeline>(*context_);
solid_fill_pipelines_[{}] =
CreateDefaultPipeline<SolidFillPipeline>(*context_);
radial_gradient_fill_pipelines_[{}] =
CreateDefaultPipeline<RadialGradientFillPipeline>(*context_);
texture_blend_pipelines_[{}] =
CreateDefaultPipeline<BlendPipeline>(*context_);
blend_color_pipelines_[{}] =
CreateDefaultPipeline<BlendColorPipeline>(*context_);
blend_colorburn_pipelines_[{}] =
CreateDefaultPipeline<BlendColorBurnPipeline>(*context_);
blend_colordodge_pipelines_[{}] =
CreateDefaultPipeline<BlendColorDodgePipeline>(*context_);
blend_darken_pipelines_[{}] =
CreateDefaultPipeline<BlendDarkenPipeline>(*context_);
blend_difference_pipelines_[{}] =
CreateDefaultPipeline<BlendDifferencePipeline>(*context_);
blend_exclusion_pipelines_[{}] =
CreateDefaultPipeline<BlendExclusionPipeline>(*context_);
blend_hardlight_pipelines_[{}] =
CreateDefaultPipeline<BlendHardLightPipeline>(*context_);
blend_hue_pipelines_[{}] = CreateDefaultPipeline<BlendHuePipeline>(*context_);
blend_lighten_pipelines_[{}] =
CreateDefaultPipeline<BlendLightenPipeline>(*context_);
blend_luminosity_pipelines_[{}] =
CreateDefaultPipeline<BlendLuminosityPipeline>(*context_);
blend_multiply_pipelines_[{}] =
CreateDefaultPipeline<BlendMultiplyPipeline>(*context_);
blend_overlay_pipelines_[{}] =
CreateDefaultPipeline<BlendOverlayPipeline>(*context_);
blend_saturation_pipelines_[{}] =
CreateDefaultPipeline<BlendSaturationPipeline>(*context_);
blend_screen_pipelines_[{}] =
CreateDefaultPipeline<BlendScreenPipeline>(*context_);
blend_softlight_pipelines_[{}] =
CreateDefaultPipeline<BlendSoftLightPipeline>(*context_);
texture_pipelines_[{}] = CreateDefaultPipeline<TexturePipeline>(*context_);
gaussian_blur_pipelines_[{}] =
CreateDefaultPipeline<GaussianBlurPipeline>(*context_);
border_mask_blur_pipelines_[{}] =
CreateDefaultPipeline<BorderMaskBlurPipeline>(*context_);
solid_stroke_pipelines_[{}] =
CreateDefaultPipeline<SolidStrokePipeline>(*context_);
glyph_atlas_pipelines_[{}] =
CreateDefaultPipeline<GlyphAtlasPipeline>(*context_);
vertices_pipelines_[{}] = CreateDefaultPipeline<VerticesPipeline>(*context_);
// Pipelines that are variants of the base pipelines with custom descriptors.
// TODO(98684): Rework this API to allow fetching the descriptor without
// waiting for the pipeline to build.
if (auto solid_fill_pipeline = solid_fill_pipelines_[{}]->WaitAndGet()) {
auto clip_pipeline_descriptor = solid_fill_pipeline->GetDescriptor();
clip_pipeline_descriptor.SetLabel("Clip Pipeline");
// Disable write to all color attachments.
auto color_attachments =
clip_pipeline_descriptor.GetColorAttachmentDescriptors();
for (auto& color_attachment : color_attachments) {
color_attachment.second.write_mask =
static_cast<uint64_t>(ColorWriteMask::kNone);
}
clip_pipeline_descriptor.SetColorAttachmentDescriptors(
std::move(color_attachments));
clip_pipelines_[{}] =
std::make_unique<ClipPipeline>(*context_, clip_pipeline_descriptor);
} else {
return;
}
is_valid_ = true;
}
ContentContext::~ContentContext() = default;
bool ContentContext::IsValid() const {
return is_valid_;
}
std::shared_ptr<Texture> ContentContext::MakeSubpass(
ISize texture_size,
SubpassCallback subpass_callback) const {
auto context = GetContext();
auto subpass_target = RenderTarget::CreateOffscreen(*context, texture_size);
auto subpass_texture = subpass_target.GetRenderTargetTexture();
if (!subpass_texture) {
return nullptr;
}
auto sub_command_buffer = context->CreateRenderCommandBuffer();
sub_command_buffer->SetLabel("Offscreen Contents Command Buffer");
if (!sub_command_buffer) {
return nullptr;
}
auto sub_renderpass = sub_command_buffer->CreateRenderPass(subpass_target);
if (!sub_renderpass) {
return nullptr;
}
sub_renderpass->SetLabel("OffscreenContentsPass");
if (!subpass_callback(*this, *sub_renderpass)) {
return nullptr;
}
if (!sub_renderpass->EncodeCommands(context->GetTransientsAllocator())) {
return nullptr;
}
if (!sub_command_buffer->SubmitCommands()) {
return nullptr;
}
return subpass_texture;
}
std::shared_ptr<Context> ContentContext::GetContext() const {
return context_;
}
} // namespace impeller