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gl_rasterizer: Use the stream buffer for constant buffers.

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This commit is contained in:
Markus Wick 2018-08-10 10:29:37 +02:00
parent ce722e317b
commit 6ff7906ddc
4 changed files with 32 additions and 29 deletions
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39
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -44,14 +44,6 @@ RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& window)
state.texture_units[i].sampler = texture_samplers[i].sampler.handle;
}
// Create SSBOs
for (size_t stage = 0; stage < ssbos.size(); ++stage) {
for (size_t buffer = 0; buffer < ssbos[stage].size(); ++buffer) {
ssbos[stage][buffer].Create();
state.draw.const_buffers[stage][buffer].ssbo = ssbos[stage][buffer].handle;
}
}
GLint ext_num;
glGetIntegerv(GL_NUM_EXTENSIONS, &ext_num);
for (GLint i = 0; i < ext_num; i++) {
@ -255,9 +247,9 @@ std::pair<u8*, GLintptr> RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr
static_cast<Maxwell::ShaderStage>(stage));
// Configure the const buffers for this shader stage.
current_constbuffer_bindpoint =
SetupConstBuffers(static_cast<Maxwell::ShaderStage>(stage), gl_stage_program,
current_constbuffer_bindpoint, shader_resources.const_buffer_entries);
std::tie(buffer_ptr, buffer_offset, current_constbuffer_bindpoint) = SetupConstBuffers(
buffer_ptr, buffer_offset, static_cast<Maxwell::ShaderStage>(stage), gl_stage_program,
current_constbuffer_bindpoint, shader_resources.const_buffer_entries);
// Configure the textures for this shader stage.
current_texture_bindpoint =
@ -453,6 +445,9 @@ void RasterizerOpenGL::DrawArrays() {
Common::AlignUp<size_t>(buffer_size, 4) +
(sizeof(GLShader::MaxwellUniformData) + uniform_buffer_alignment) * Maxwell::MaxShaderStage;
// Add space for at least 18 constant buffers
buffer_size += Maxwell::MaxConstBuffers * (MaxConstbufferSize + uniform_buffer_alignment);
u8* buffer_ptr;
GLintptr buffer_offset;
std::tie(buffer_ptr, buffer_offset, std::ignore) =
@ -627,9 +622,9 @@ void RasterizerOpenGL::SamplerInfo::SyncWithConfig(const Tegra::Texture::TSCEntr
}
}
u32 RasterizerOpenGL::SetupConstBuffers(Maxwell::ShaderStage stage, GLuint program,
u32 current_bindpoint,
const std::vector<GLShader::ConstBufferEntry>& entries) {
std::tuple<u8*, GLintptr, u32> RasterizerOpenGL::SetupConstBuffers(
u8* buffer_ptr, GLintptr buffer_offset, Maxwell::ShaderStage stage, GLuint program,
u32 current_bindpoint, const std::vector<GLShader::ConstBufferEntry>& entries) {
const auto& gpu = Core::System::GetInstance().GPU();
const auto& maxwell3d = gpu.Maxwell3D();
@ -678,12 +673,16 @@ u32 RasterizerOpenGL::SetupConstBuffers(Maxwell::ShaderStage stage, GLuint progr
size = Common::AlignUp(size, sizeof(GLvec4));
ASSERT_MSG(size <= MaxConstbufferSize, "Constbuffer too big");
std::vector<u8> data(size);
Memory::ReadBlock(*addr, data.data(), data.size());
std::tie(buffer_ptr, buffer_offset) =
AlignBuffer(buffer_ptr, buffer_offset, static_cast<size_t>(uniform_buffer_alignment));
glBindBuffer(GL_UNIFORM_BUFFER, buffer_draw_state.ssbo);
glBufferData(GL_UNIFORM_BUFFER, data.size(), data.data(), GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
buffer_draw_state.size = size;
buffer_draw_state.offset = buffer_offset;
buffer_draw_state.ssbo = stream_buffer.GetHandle();
Memory::ReadBlock(*addr, buffer_ptr, size);
buffer_ptr += size;
buffer_offset += size;
// Now configure the bindpoint of the buffer inside the shader
const std::string buffer_name = used_buffer.GetName();
@ -696,7 +695,7 @@ u32 RasterizerOpenGL::SetupConstBuffers(Maxwell::ShaderStage stage, GLuint progr
state.Apply();
return current_bindpoint + static_cast<u32>(entries.size());
return {buffer_ptr, buffer_offset, current_bindpoint + static_cast<u32>(entries.size())};
}
u32 RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, GLuint program, u32 current_unit,

11
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -7,6 +7,7 @@
#include <array>
#include <cstddef>
#include <memory>
#include <tuple>
#include <utility>
#include <vector>
#include <glad/glad.h>
@ -100,9 +101,10 @@ private:
* @param entries Vector describing the buffers that are actually used in the guest shader.
* @returns The next available bindpoint for use in the next shader stage.
*/
u32 SetupConstBuffers(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage, GLuint program,
u32 current_bindpoint,
const std::vector<GLShader::ConstBufferEntry>& entries);
std::tuple<u8*, GLintptr, u32> SetupConstBuffers(
u8* buffer_ptr, GLintptr buffer_offset, Tegra::Engines::Maxwell3D::Regs::ShaderStage stage,
GLuint program, u32 current_bindpoint,
const std::vector<GLShader::ConstBufferEntry>& entries);
/*
* Configures the current textures to use for the draw command.
@ -154,9 +156,6 @@ private:
OGLVertexArray hw_vao;
std::array<SamplerInfo, GLShader::NumTextureSamplers> texture_samplers;
std::array<std::array<OGLBuffer, Tegra::Engines::Maxwell3D::Regs::MaxConstBuffers>,
Tegra::Engines::Maxwell3D::Regs::MaxShaderStage>
ssbos;
static constexpr size_t STREAM_BUFFER_SIZE = 128 * 1024 * 1024;
OGLStreamBuffer stream_buffer;

9
src/video_core/renderer_opengl/gl_state.cpp
View file

@ -209,10 +209,13 @@ void OpenGLState::Apply() const {
const auto& current = cur_state.draw.const_buffers[stage][buffer_id];
const auto& new_state = draw.const_buffers[stage][buffer_id];
if (current.enabled != new_state.enabled || current.bindpoint != new_state.bindpoint ||
current.ssbo != new_state.ssbo) {
if (std::tie(current.enabled, current.bindpoint, current.ssbo, current.size,
current.offset) != std::tie(new_state.enabled, new_state.bindpoint,
new_state.ssbo, new_state.size,
new_state.offset)) {
if (new_state.enabled) {
glBindBufferBase(GL_UNIFORM_BUFFER, new_state.bindpoint, new_state.ssbo);
glBindBufferRange(GL_UNIFORM_BUFFER, new_state.bindpoint, new_state.ssbo,
new_state.offset, new_state.size);
}
}
}

2
src/video_core/renderer_opengl/gl_state.h
View file

@ -123,6 +123,8 @@ public:
bool enabled = false;
GLuint bindpoint;
GLuint ssbo;
GLsizeiptr size;
GLintptr offset;
};
std::array<std::array<ConstBufferConfig, Regs::MaxConstBuffers>, 5> const_buffers;
} draw;