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[Flutter GPU] Texture binding, index binding, attachments, depth state. #48386

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bdero merged 10 commits into from
Nov 27, 2023
Merged

[Flutter GPU] Texture binding, index binding, attachments, depth state. #48386

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4118138
[Flutter GPU] Combined depth+stencil attachment.
bdero Nov 26, 2023
50bb730
[Flutter GPU] Allow for multiple color attachments.
bdero Nov 26, 2023
4326785
[Flutter GPU] Add blend mode configuration.
bdero Nov 26, 2023
6c74532
Fix uniform ordering for vertex shaders
bdero Nov 26, 2023
603c890
[Flutter GPU] Texture binding and sampling options.
bdero Nov 26, 2023
4445b13
[Flutter GPU] Index buffer binding.
bdero Nov 26, 2023
2bff889
Fix shader lib hack
bdero Nov 26, 2023
b0cdd52
[Flutter GPU] Depth configuration.
bdero Nov 26, 2023
f37be58
jonah review
bdero Nov 27, 2023
e831520
jonah review
bdero Nov 27, 2023
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14 changes: 10 additions & 4 deletions impeller/compiler/compiler.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -71,18 +71,24 @@ static CompilerBackend CreateMSLCompiler(
// metal backend of spirv-cross will order uniforms according to usage. To fix
// this, we use the sorted order and the add_msl_resource_binding API to force
// the ordering to match the declared order. Note that while this code runs
// for all compiled shaders, it will only affect fragment shaders due to the
// specified stage.
// for all compiled shaders, it will only affect vertex and fragment shaders
// due to the specified stage.
auto floats =
SortUniforms(&ir, sl_compiler.get(), spirv_cross::SPIRType::Float);
auto images =
SortUniforms(&ir, sl_compiler.get(), spirv_cross::SPIRType::SampledImage);

spv::ExecutionModel execution_model =
spv::ExecutionModel::ExecutionModelFragment;
if (source_options.type == SourceType::kVertexShader) {
execution_model = spv::ExecutionModel::ExecutionModelVertex;
}

uint32_t buffer_offset = 0;
uint32_t sampler_offset = 0;
for (auto& float_id : floats) {
sl_compiler->add_msl_resource_binding(
{.stage = spv::ExecutionModel::ExecutionModelFragment,
{.stage = execution_model,
.basetype = spirv_cross::SPIRType::BaseType::Float,
.desc_set = sl_compiler->get_decoration(float_id,
spv::DecorationDescriptorSet),
Expand All @@ -94,7 +100,7 @@ static CompilerBackend CreateMSLCompiler(
}
for (auto& image_id : images) {
sl_compiler->add_msl_resource_binding({
.stage = spv::ExecutionModel::ExecutionModelFragment,
.stage = execution_model,
.basetype = spirv_cross::SPIRType::BaseType::SampledImage,
.desc_set =
sl_compiler->get_decoration(image_id, spv::DecorationDescriptorSet),
Expand Down
21 changes: 21 additions & 0 deletions impeller/core/formats.h
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,27 @@ enum class PixelFormat {
kD32FloatS8UInt,
};

constexpr bool IsDepthWritable(PixelFormat format) {
switch (format) {
case PixelFormat::kD24UnormS8Uint:
case PixelFormat::kD32FloatS8UInt:
return true;
default:
return false;
}
}

constexpr bool IsStencilWritable(PixelFormat format) {
switch (format) {
case PixelFormat::kS8UInt:
case PixelFormat::kD24UnormS8Uint:
case PixelFormat::kD32FloatS8UInt:
return true;
default:
return false;
}
}

constexpr const char* PixelFormatToString(PixelFormat format) {
switch (format) {
case PixelFormat::kUnknown:
Expand Down
2 changes: 2 additions & 0 deletions impeller/fixtures/BUILD.gn
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Original file line number Diff line number Diff line change
Expand Up @@ -119,6 +119,8 @@ impellerc("flutter_gpu_shaders") {
# Temporarily build Flutter GPU test shaders as runtime stages.
"flutter_gpu_unlit.frag",
"flutter_gpu_unlit.vert",
"flutter_gpu_texture.frag",
"flutter_gpu_texture.vert",
]
sl_file_extension = "iplr"
shader_target_flag = "--runtime-stage-metal"
Expand Down
11 changes: 9 additions & 2 deletions impeller/fixtures/dart_tests.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -189,12 +189,19 @@ void canCreateRenderPassAndSubmit() {
assert(renderTexture != null);

final gpu.CommandBuffer commandBuffer = gpu.gpuContext.createCommandBuffer();
final gpu.RenderPass encoder = commandBuffer.createRenderPass(
colorAttachment: gpu.ColorAttachment(texture: renderTexture!));

final gpu.RenderTarget renderTarget = gpu.RenderTarget.singleColor(
gpu.ColorAttachment(texture: renderTexture!),
);
final gpu.RenderPass encoder = commandBuffer.createRenderPass(renderTarget);

final gpu.RenderPipeline pipeline = createUnlitRenderPipeline();
encoder.bindPipeline(pipeline);

// Configure blending with defaults (just to test the bindings).
encoder.setColorBlendEnable(true);
encoder.setColorBlendEquation(gpu.ColorBlendEquation());

final gpu.HostBuffer transients = gpu.HostBuffer();
final gpu.BufferView vertices = transients.emplace(float32(<double>[
-0.5, -0.5, //
Expand Down
13 changes: 13 additions & 0 deletions impeller/fixtures/flutter_gpu_texture.frag
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
// 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.

uniform sampler2D tex;

in vec2 v_texture_coords;
in vec4 v_color;
out vec4 frag_color;

void main() {
frag_color = v_color * texture(tex, v_texture_coords);
}
17 changes: 17 additions & 0 deletions impeller/fixtures/flutter_gpu_texture.vert
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Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
// 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.

uniform mat4 mvp;

in vec3 position;
in vec2 texture_coords;
in vec4 color;
out vec2 v_texture_coords;
out vec4 v_color;

void main() {
v_texture_coords = texture_coords;
v_color = color;
gl_Position = mvp * vec4(position, 1.0);
}
3 changes: 1 addition & 2 deletions lib/gpu/device_buffer.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -54,8 +54,7 @@ bool InternalFlutterGpu_DeviceBuffer_Initialize(
int storage_mode,
int size_in_bytes) {
impeller::DeviceBufferDescriptor desc;
desc.storage_mode = flutter::gpu::ToImpellerStorageMode(
static_cast<flutter::gpu::FlutterGPUStorageMode>(storage_mode));
desc.storage_mode = flutter::gpu::ToImpellerStorageMode(storage_mode);
desc.size = size_in_bytes;
auto device_buffer =
gpu_context->GetContext()->GetResourceAllocator()->CreateBuffer(desc);
Expand Down
148 changes: 148 additions & 0 deletions lib/gpu/fixtures.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -130,3 +130,151 @@ unsigned char kFlutterGPUUnlitFragIPLR[] = {
0x74, 0x65, 0x72, 0x5f, 0x67, 0x70, 0x75, 0x5f, 0x75, 0x6e, 0x6c, 0x69,
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0x61, 0x69, 0x6e, 0x00};

unsigned char kFlutterGPUTextureVertIPLR[] = {
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unsigned char kFlutterGPUTextureFragIPLR[] = {
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67 changes: 67 additions & 0 deletions lib/gpu/fixtures.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -40,3 +40,70 @@ extern unsigned char kFlutterGPUUnlitVertIPLR[];

constexpr unsigned int kFlutterGPUUnlitFragIPLRLength = 556;
extern unsigned char kFlutterGPUUnlitFragIPLR[];

struct FlutterGPUTextureVertexShader {
struct PerVertexData {
impeller::Vector3 position; // (offset 0, size 12)
impeller::Point texture_coords; // (offset 12, size 8)
impeller::Vector4 color; // (offset 20, size 16)
}; // struct PerVertexData (size 36)

static constexpr auto kInputTextureCoords = impeller::ShaderStageIOSlot{
// texture_coords
"texture_coords", // name
1u, // attribute location
0u, // attribute set
0u, // attribute binding
impeller::ShaderType::kFloat, // type
32u, // bit width of type
2u, // vec size
1u, // number of columns
12u, // offset for interleaved layout
};

static constexpr auto kInputColor = impeller::ShaderStageIOSlot{
// color
"color", // name
2u, // attribute location
0u, // attribute set
0u, // attribute binding
impeller::ShaderType::kFloat, // type
32u, // bit width of type
4u, // vec size
1u, // number of columns
20u, // offset for interleaved layout
};

static constexpr auto kInputPosition = impeller::ShaderStageIOSlot{
// position
"position", // name
0u, // attribute location
0u, // attribute set
0u, // attribute binding
impeller::ShaderType::kFloat, // type
32u, // bit width of type
3u, // vec size
1u, // number of columns
0u, // offset for interleaved layout
};

static constexpr std::array<const impeller::ShaderStageIOSlot*, 3>
kAllShaderStageInputs = {
&kInputTextureCoords, // texture_coords
&kInputColor, // color
&kInputPosition, // position
};

static constexpr auto kInterleavedLayout = impeller::ShaderStageBufferLayout{
sizeof(PerVertexData), // stride for interleaved layout
0u, // attribute binding
};
static constexpr std::array<const impeller::ShaderStageBufferLayout*, 1>
kInterleavedBufferLayout = {&kInterleavedLayout};
};

constexpr unsigned int kFlutterGPUTextureVertIPLRLength = 920;
extern unsigned char kFlutterGPUTextureVertIPLR[];

constexpr unsigned int kFlutterGPUTextureFragIPLRLength = 800;
extern unsigned char kFlutterGPUTextureFragIPLR[];
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