yuzu-emu
/
yuzu-android
Archived
1
0
Fork 0

Merge pull request #1019 from Subv/vertex_divisor

Rasterizer: Manually implemented instanced rendering.
This commit is contained in:
bunnei 2018-08-17 00:07:06 -04:00 committed by GitHub
commit 727136a9c9
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 28 additions and 5 deletions

View File

@ -222,6 +222,18 @@ void Maxwell3D::DrawArrays() {
debug_context->OnEvent(Tegra::DebugContext::Event::FinishedPrimitiveBatch, nullptr);
}
// Both instance configuration registers can not be set at the same time.
ASSERT_MSG(!regs.draw.instance_next || !regs.draw.instance_cont,
"Illegal combination of instancing parameters");
if (regs.draw.instance_next) {
// Increment the current instance *before* drawing.
state.current_instance += 1;
} else if (!regs.draw.instance_cont) {
// Reset the current instance to 0.
state.current_instance = 0;
}
const bool is_indexed{regs.index_array.count && !regs.vertex_buffer.count};
rasterizer.AccelerateDrawBatch(is_indexed);

View File

@ -638,6 +638,8 @@ public:
union {
u32 vertex_begin_gl;
BitField<0, 16, PrimitiveTopology> topology;
BitField<26, 1, u32> instance_next;
BitField<27, 1, u32> instance_cont;
};
} draw;
@ -830,6 +832,7 @@ public:
};
std::array<ShaderStageInfo, Regs::MaxShaderStage> shader_stages;
u32 current_instance = 0; ///< Current instance to be used to simulate instanced rendering.
};
State state{};

View File

@ -124,7 +124,7 @@ std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
glBindVertexBuffer(index, stream_buffer.GetHandle(), vertex_buffer_offset,
vertex_array.stride);
ASSERT_MSG(vertex_array.divisor == 0, "Vertex buffer divisor unimplemented");
ASSERT_MSG(vertex_array.divisor == 0, "Instanced vertex arrays are not supported");
}
// Use the vertex array as-is, assumes that the data is formatted correctly for OpenGL.

View File

@ -541,7 +541,7 @@ private:
// vertex shader, and what's the value of the fourth element when inside a Tess Eval
// shader.
ASSERT(stage == Maxwell3D::Regs::ShaderStage::Vertex);
return "vec4(0, 0, uintBitsToFloat(gl_InstanceID), uintBitsToFloat(gl_VertexID))";
return "vec4(0, 0, uintBitsToFloat(instance_id.x), uintBitsToFloat(gl_VertexID))";
default:
const u32 index{static_cast<u32>(attribute) -
static_cast<u32>(Attribute::Index::Attribute_0)};

View File

@ -38,6 +38,7 @@ out vec4 position;
layout (std140) uniform vs_config {
vec4 viewport_flip;
uvec4 instance_id;
};
void main() {
@ -90,6 +91,7 @@ out vec4 color;
layout (std140) uniform fs_config {
vec4 viewport_flip;
uvec4 instance_id;
};
void main() {

View File

@ -37,11 +37,16 @@ void SetShaderUniformBlockBindings(GLuint shader) {
} // namespace Impl
void MaxwellUniformData::SetFromRegs(const Maxwell3D::State::ShaderStageInfo& shader_stage) {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
const auto& gpu = Core::System::GetInstance().GPU().Maxwell3D();
const auto& regs = gpu.regs;
const auto& state = gpu.state;
// TODO(bunnei): Support more than one viewport
viewport_flip[0] = regs.viewport_transform[0].scale_x < 0.0 ? -1.0f : 1.0f;
viewport_flip[1] = regs.viewport_transform[0].scale_y < 0.0 ? -1.0f : 1.0f;
// We only assign the instance to the first component of the vector, the rest is just padding.
instance_id[0] = state.current_instance;
}
} // namespace GLShader

View File

@ -24,14 +24,15 @@ void SetShaderUniformBlockBindings(GLuint shader);
} // namespace Impl
/// Uniform structure for the Uniform Buffer Object, all vectors must be 16-byte aligned
// NOTE: Always keep a vec4 at the end. The GL spec is not clear wether the alignment at
// NOTE: Always keep a vec4 at the end. The GL spec is not clear whether the alignment at
// the end of a uniform block is included in UNIFORM_BLOCK_DATA_SIZE or not.
// Not following that rule will cause problems on some AMD drivers.
struct MaxwellUniformData {
void SetFromRegs(const Maxwell3D::State::ShaderStageInfo& shader_stage);
alignas(16) GLvec4 viewport_flip;
alignas(16) GLuvec4 instance_id;
};
static_assert(sizeof(MaxwellUniformData) == 16, "MaxwellUniformData structure size is incorrect");
static_assert(sizeof(MaxwellUniformData) == 32, "MaxwellUniformData structure size is incorrect");
static_assert(sizeof(MaxwellUniformData) < 16384,
"MaxwellUniformData structure must be less than 16kb as per the OpenGL spec");