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Commit 292a921

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bderobdero
authored
[Flutter GPU] Texture binding, index binding, attachments, depth state. (#48386)
Now rendering textured 3D models! * Combined depth+stencil attachment. * Allow for multiple color attachments. * Add blend mode configuration. * Fix uniform ordering for vertex shaders. * Texture binding and sampling options. * Index buffer binding. * Depth configuration.
1 parent 10c0ba2 commit 292a921

19 files changed

+1177
-133
lines changed

‎impeller/compiler/compiler.cc‎

Lines changed: 10 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -71,18 +71,24 @@ static CompilerBackend CreateMSLCompiler(
7171
// metal backend of spirv-cross will order uniforms according to usage. To fix
7272
// this, we use the sorted order and the add_msl_resource_binding API to force
7373
// the ordering to match the declared order. Note that while this code runs
74-
// for all compiled shaders, it will only affect fragment shaders due to the
75-
// specified stage.
74+
// for all compiled shaders, it will only affect vertex and fragment shaders
75+
// due to the specified stage.
7676
auto floats =
7777
SortUniforms(&ir, sl_compiler.get(), spirv_cross::SPIRType::Float);
7878
auto images =
7979
SortUniforms(&ir, sl_compiler.get(), spirv_cross::SPIRType::SampledImage);
8080

81+
spv::ExecutionModel execution_model =
82+
spv::ExecutionModel::ExecutionModelFragment;
83+
if (source_options.type == SourceType::kVertexShader) {
84+
execution_model = spv::ExecutionModel::ExecutionModelVertex;
85+
}
86+
8187
uint32_t buffer_offset = 0;
8288
uint32_t sampler_offset = 0;
8389
for (auto& float_id : floats) {
8490
sl_compiler->add_msl_resource_binding(
85-
{.stage = spv::ExecutionModel::ExecutionModelFragment,
91+
{.stage = execution_model,
8692
.basetype = spirv_cross::SPIRType::BaseType::Float,
8793
.desc_set = sl_compiler->get_decoration(float_id,
8894
spv::DecorationDescriptorSet),
@@ -94,7 +100,7 @@ static CompilerBackend CreateMSLCompiler(
94100
}
95101
for (auto& image_id : images) {
96102
sl_compiler->add_msl_resource_binding({
97-
.stage = spv::ExecutionModel::ExecutionModelFragment,
103+
.stage = execution_model,
98104
.basetype = spirv_cross::SPIRType::BaseType::SampledImage,
99105
.desc_set =
100106
sl_compiler->get_decoration(image_id, spv::DecorationDescriptorSet),

‎impeller/core/formats.h‎

Lines changed: 21 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -110,6 +110,27 @@ enum class PixelFormat {
110110
kD32FloatS8UInt,
111111
};
112112

113+
constexpr bool IsDepthWritable(PixelFormat format) {
114+
switch (format) {
115+
case PixelFormat::kD24UnormS8Uint:
116+
case PixelFormat::kD32FloatS8UInt:
117+
return true;
118+
default:
119+
return false;
120+
}
121+
}
122+
123+
constexpr bool IsStencilWritable(PixelFormat format) {
124+
switch (format) {
125+
case PixelFormat::kS8UInt:
126+
case PixelFormat::kD24UnormS8Uint:
127+
case PixelFormat::kD32FloatS8UInt:
128+
return true;
129+
default:
130+
return false;
131+
}
132+
}
133+
113134
constexpr const char* PixelFormatToString(PixelFormat format) {
114135
switch (format) {
115136
case PixelFormat::kUnknown:

‎impeller/fixtures/BUILD.gn‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -119,6 +119,8 @@ impellerc("flutter_gpu_shaders") {
119119
# Temporarily build Flutter GPU test shaders as runtime stages.
120120
"flutter_gpu_unlit.frag",
121121
"flutter_gpu_unlit.vert",
122+
"flutter_gpu_texture.frag",
123+
"flutter_gpu_texture.vert",
122124
]
123125
sl_file_extension = "iplr"
124126
shader_target_flag = "--runtime-stage-metal"

‎impeller/fixtures/dart_tests.dart‎

Lines changed: 9 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -189,12 +189,19 @@ void canCreateRenderPassAndSubmit() {
189189
assert(renderTexture != null);
190190

191191
final gpu.CommandBuffer commandBuffer = gpu.gpuContext.createCommandBuffer();
192-
final gpu.RenderPass encoder = commandBuffer.createRenderPass(
193-
colorAttachment: gpu.ColorAttachment(texture: renderTexture!));
192+
193+
final gpu.RenderTarget renderTarget = gpu.RenderTarget.singleColor(
194+
gpu.ColorAttachment(texture: renderTexture!),
195+
);
196+
final gpu.RenderPass encoder = commandBuffer.createRenderPass(renderTarget);
194197

195198
final gpu.RenderPipeline pipeline = createUnlitRenderPipeline();
196199
encoder.bindPipeline(pipeline);
197200

201+
// Configure blending with defaults (just to test the bindings).
202+
encoder.setColorBlendEnable(true);
203+
encoder.setColorBlendEquation(gpu.ColorBlendEquation());
204+
198205
final gpu.HostBuffer transients = gpu.HostBuffer();
199206
final gpu.BufferView vertices = transients.emplace(float32(<double>[
200207
-0.5, -0.5, //

‎impeller/fixtures/flutter_gpu_texture.frag‎

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
1+
// Copyright 2013 The Flutter Authors. All rights reserved.
2+
// Use of this source code is governed by a BSD-style license that can be
3+
// found in the LICENSE file.
4+
5+
uniform sampler2D tex;
6+
7+
in vec2 v_texture_coords;
8+
in vec4 v_color;
9+
out vec4 frag_color;
10+
11+
void main() {
12+
frag_color = v_color * texture(tex, v_texture_coords);
13+
}

‎impeller/fixtures/flutter_gpu_texture.vert‎

Lines changed: 17 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,17 @@
1+
// Copyright 2013 The Flutter Authors. All rights reserved.
2+
// Use of this source code is governed by a BSD-style license that can be
3+
// found in the LICENSE file.
4+
5+
uniform mat4 mvp;
6+
7+
in vec3 position;
8+
in vec2 texture_coords;
9+
in vec4 color;
10+
out vec2 v_texture_coords;
11+
out vec4 v_color;
12+
13+
void main() {
14+
v_texture_coords = texture_coords;
15+
v_color = color;
16+
gl_Position = mvp * vec4(position, 1.0);
17+
}

‎lib/gpu/device_buffer.cc‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -54,8 +54,7 @@ bool InternalFlutterGpu_DeviceBuffer_Initialize(
5454
int storage_mode,
5555
int size_in_bytes) {
5656
impeller::DeviceBufferDescriptor desc;
57-
desc.storage_mode = flutter::gpu::ToImpellerStorageMode(
58-
static_cast<flutter::gpu::FlutterGPUStorageMode>(storage_mode));
57+
desc.storage_mode = flutter::gpu::ToImpellerStorageMode(storage_mode);
5958
desc.size = size_in_bytes;
6059
auto device_buffer =
6160
gpu_context->GetContext()->GetResourceAllocator()->CreateBuffer(desc);

‎lib/gpu/fixtures.cc‎

Lines changed: 148 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -130,3 +130,151 @@ unsigned char kFlutterGPUUnlitFragIPLR[] = {
130130
0x74, 0x65, 0x72, 0x5f, 0x67, 0x70, 0x75, 0x5f, 0x75, 0x6e, 0x6c, 0x69,
131131
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132132
0x61, 0x69, 0x6e, 0x00};
133+
134+
unsigned char kFlutterGPUTextureVertIPLR[] = {
135+
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136+
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137+
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138+
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unsigned char kFlutterGPUTextureFragIPLR[] = {
214+
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‎lib/gpu/fixtures.h‎

Lines changed: 67 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -40,3 +40,70 @@ extern unsigned char kFlutterGPUUnlitVertIPLR[];
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constexpr unsigned int kFlutterGPUUnlitFragIPLRLength = 556;
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extern unsigned char kFlutterGPUUnlitFragIPLR[];
43+
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struct FlutterGPUTextureVertexShader {
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struct PerVertexData {
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impeller::Vector3 position; // (offset 0, size 12)
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impeller::Point texture_coords; // (offset 12, size 8)
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impeller::Vector4 color; // (offset 20, size 16)
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}; // struct PerVertexData (size 36)
50+
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static constexpr auto kInputTextureCoords = impeller::ShaderStageIOSlot{
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// texture_coords
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"texture_coords", // name
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1u, // attribute location
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0u, // attribute set
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0u, // attribute binding
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impeller::ShaderType::kFloat, // type
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32u, // bit width of type
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2u, // vec size
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1u, // number of columns
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12u, // offset for interleaved layout
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};
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64+
static constexpr auto kInputColor = impeller::ShaderStageIOSlot{
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// color
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"color", // name
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2u, // attribute location
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0u, // attribute set
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0u, // attribute binding
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impeller::ShaderType::kFloat, // type
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32u, // bit width of type
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4u, // vec size
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1u, // number of columns
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20u, // offset for interleaved layout
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};
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static constexpr auto kInputPosition = impeller::ShaderStageIOSlot{
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// position
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"position", // name
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0u, // attribute location
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0u, // attribute set
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0u, // attribute binding
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impeller::ShaderType::kFloat, // type
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32u, // bit width of type
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3u, // vec size
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1u, // number of columns
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0u, // offset for interleaved layout
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};
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static constexpr std::array<const impeller::ShaderStageIOSlot*, 3>
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kAllShaderStageInputs = {
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&kInputTextureCoords, // texture_coords
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&kInputColor, // color
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&kInputPosition, // position
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};
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static constexpr auto kInterleavedLayout = impeller::ShaderStageBufferLayout{
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sizeof(PerVertexData), // stride for interleaved layout
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0u, // attribute binding
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};
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static constexpr std::array<const impeller::ShaderStageBufferLayout*, 1>
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kInterleavedBufferLayout = {&kInterleavedLayout};
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};
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constexpr unsigned int kFlutterGPUTextureVertIPLRLength = 920;
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extern unsigned char kFlutterGPUTextureVertIPLR[];
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constexpr unsigned int kFlutterGPUTextureFragIPLRLength = 800;
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extern unsigned char kFlutterGPUTextureFragIPLR[];

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