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gl_rasterizer: Generate shaders and upload uniforms.

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This commit is contained in:
bunnei 2018-04-08 00:00:11 -04:00
parent 85d77a3d24
commit beddc8afd2
2 changed files with 77 additions and 32 deletions
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98
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -96,10 +96,14 @@ RasterizerOpenGL::RasterizerOpenGL() {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, stream_buffer->GetHandle());
vs_uniform_buffer.Create();
glBindBuffer(GL_UNIFORM_BUFFER, vs_uniform_buffer.handle);
glBufferData(GL_UNIFORM_BUFFER, sizeof(GLShader::VSUniformData), nullptr, GL_STREAM_COPY);
glBindBufferBase(GL_UNIFORM_BUFFER, 1, vs_uniform_buffer.handle);
for (unsigned index = 0; index < uniform_buffers.size(); ++index) {
auto& buffer = uniform_buffers[index];
buffer.Create();
glBindBuffer(GL_UNIFORM_BUFFER, buffer.handle);
glBufferData(GL_UNIFORM_BUFFER, sizeof(GLShader::MaxwellUniformData), nullptr,
GL_STREAM_COPY);
glBindBufferBase(GL_UNIFORM_BUFFER, index, buffer.handle);
}
accelerate_draw = AccelDraw::Disabled;
@ -167,16 +171,70 @@ void RasterizerOpenGL::SetupVertexArray(u8* array_ptr, GLintptr buffer_offset) {
buffer_offset += data_size;
}
void RasterizerOpenGL::SetupVertexShader(GLShader::VSUniformData* ub_ptr, GLintptr buffer_offset) {
MICROPROFILE_SCOPE(OpenGL_VS);
UNREACHABLE();
void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset, size_t ptr_pos) {
// Helper function for uploading uniform data
const auto copy_buffer = [&](GLuint handle, GLintptr offset, GLsizeiptr size) {
if (has_ARB_direct_state_access) {
glCopyNamedBufferSubData(stream_buffer->GetHandle(), handle, offset, 0, size);
} else {
glBindBuffer(GL_COPY_WRITE_BUFFER, handle);
glCopyBufferSubData(GL_ARRAY_BUFFER, GL_COPY_WRITE_BUFFER, offset, 0, size);
}
};
auto& gpu = Core::System().GetInstance().GPU().Maxwell3D();
ASSERT_MSG(!gpu.regs.shader_config[0].enable, "VertexA is unsupported!");
for (unsigned index = 1; index < Maxwell::MaxShaderProgram; ++index) {
ptr_pos += sizeof(GLShader::MaxwellUniformData);
auto& shader_config = gpu.regs.shader_config[index];
const Maxwell::ShaderProgram program{static_cast<Maxwell::ShaderProgram>(index)};
// VertexB program is always enabled, despite bit setting
const bool is_enabled{shader_config.enable || program == Maxwell::ShaderProgram::VertexB};
// Skip stages that are not enabled
if (!is_enabled) {
continue;
}
void RasterizerOpenGL::SetupFragmentShader(GLShader::FSUniformData* ub_ptr,
GLintptr buffer_offset) {
MICROPROFILE_SCOPE(OpenGL_FS);
// Upload uniform data as one UBO per stage
const auto& stage = index - 1; // Stage indices are 0 - 5
const GLintptr ubo_offset = buffer_offset + static_cast<GLintptr>(ptr_pos);
copy_buffer(uniform_buffers[stage].handle, ubo_offset,
sizeof(GLShader::MaxwellUniformData));
GLShader::MaxwellUniformData* ub_ptr =
reinterpret_cast<GLShader::MaxwellUniformData*>(&buffer_ptr[ptr_pos]);
ub_ptr->SetFromRegs(gpu.state.shader_stages[stage]);
// Fetch program code from memory
GLShader::ProgramCode program_code;
const u64 gpu_address{gpu.regs.code_address.CodeAddress() + shader_config.offset};
const VAddr cpu_address{gpu.memory_manager.PhysicalToVirtualAddress(gpu_address)};
Memory::ReadBlock(cpu_address, program_code.data(), program_code.size() * sizeof(u64));
GLShader::ShaderSetup setup{std::move(program_code)};
switch (program) {
case Maxwell::ShaderProgram::VertexB: {
GLShader::MaxwellVSConfig vs_config{setup};
shader_program_manager->UseProgrammableVertexShader(vs_config, setup);
break;
}
case Maxwell::ShaderProgram::Fragment: {
GLShader::MaxwellFSConfig fs_config{setup};
shader_program_manager->UseProgrammableFragmentShader(fs_config, setup);
break;
}
default:
LOG_CRITICAL(HW_GPU, "Unimplemented shader index=%d, enable=%d, offset=0x%08X", index,
shader_config.enable.Value(), shader_config.offset);
UNREACHABLE();
}
}
shader_program_manager->UseTrivialGeometryShader();
}
bool RasterizerOpenGL::AccelerateDrawBatch(bool is_indexed) {
accelerate_draw = is_indexed ? AccelDraw::Indexed : AccelDraw::Arrays;
@ -260,7 +318,9 @@ void RasterizerOpenGL::DrawArrays() {
if (is_indexed) {
UNREACHABLE();
}
buffer_size += sizeof(GLShader::VSUniformData);
// Uniform space for the 5 shader stages
buffer_size += sizeof(GLShader::MaxwellUniformData) * Maxwell::MaxShaderStage;
size_t ptr_pos = 0;
u8* buffer_ptr;
@ -276,24 +336,10 @@ void RasterizerOpenGL::DrawArrays() {
UNREACHABLE();
}
SetupVertexShader(reinterpret_cast<GLShader::VSUniformData*>(&buffer_ptr[ptr_pos]),
buffer_offset + static_cast<GLintptr>(ptr_pos));
const GLintptr vs_ubo_offset = buffer_offset + static_cast<GLintptr>(ptr_pos);
ptr_pos += sizeof(GLShader::VSUniformData);
SetupShaders(buffer_ptr, buffer_offset, ptr_pos);
stream_buffer->Unmap();
const auto copy_buffer = [&](GLuint handle, GLintptr offset, GLsizeiptr size) {
if (has_ARB_direct_state_access) {
glCopyNamedBufferSubData(stream_buffer->GetHandle(), handle, offset, 0, size);
} else {
glBindBuffer(GL_COPY_WRITE_BUFFER, handle);
glCopyBufferSubData(GL_ARRAY_BUFFER, GL_COPY_WRITE_BUFFER, offset, 0, size);
}
};
copy_buffer(vs_uniform_buffer.handle, vs_ubo_offset, sizeof(GLShader::VSUniformData));
shader_program_manager->ApplyTo(state);
state.Apply();

7
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -15,6 +15,7 @@
#include "common/common_types.h"
#include "common/hash.h"
#include "common/vector_math.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/rasterizer_interface.h"
#include "video_core/renderer_opengl/gl_rasterizer_cache.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
@ -141,11 +142,9 @@ private:
void AnalyzeVertexArray(bool is_indexed);
void SetupVertexArray(u8* array_ptr, GLintptr buffer_offset);
OGLBuffer vs_uniform_buffer;
std::array<OGLBuffer, Tegra::Engines::Maxwell3D::Regs::MaxShaderStage> uniform_buffers;
void SetupVertexShader(GLShader::VSUniformData* ub_ptr, GLintptr buffer_offset);
void SetupFragmentShader(GLShader::FSUniformData* ub_ptr, GLintptr buffer_offset);
void SetupShaders(u8* buffer_ptr, GLintptr buffer_offset, size_t ptr_pos);
enum class AccelDraw { Disabled, Arrays, Indexed };
AccelDraw accelerate_draw;