gl_rasterizer: Use ARB_multi_bind to update UBOs across stages

This commit is contained in:
ReinUsesLisp 2019-04-05 18:31:24 -03:00
parent 66be5150d6
commit 2d1f054c61
4 changed files with 58 additions and 22 deletions

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@ -299,6 +299,9 @@ void RasterizerOpenGL::SetupShaders(GLenum primitive_mode) {
BaseBindings base_bindings;
std::array<bool, Maxwell::NumClipDistances> clip_distances{};
// Prepare UBO bindings
bind_ubo_pushbuffer.Setup(base_bindings.cbuf);
for (std::size_t index = 0; index < Maxwell::MaxShaderProgram; ++index) {
const auto& shader_config = gpu.regs.shader_config[index];
const Maxwell::ShaderProgram program{static_cast<Maxwell::ShaderProgram>(index)};
@ -321,7 +324,7 @@ void RasterizerOpenGL::SetupShaders(GLenum primitive_mode) {
&ubo, sizeof(ubo), static_cast<std::size_t>(uniform_buffer_alignment));
// Bind the emulation info buffer
glBindBufferRange(GL_UNIFORM_BUFFER, base_bindings.cbuf, buffer_cache.GetHandle(), offset,
bind_ubo_pushbuffer.Push(buffer_cache.GetHandle(), offset,
static_cast<GLsizeiptr>(sizeof(ubo)));
Shader shader{shader_cache.GetStageProgram(program)};
@ -366,6 +369,8 @@ void RasterizerOpenGL::SetupShaders(GLenum primitive_mode) {
base_bindings = next_bindings;
}
bind_ubo_pushbuffer.Bind();
SyncClipEnabled(clip_distances);
gpu.dirty_flags.shaders = false;
@ -900,23 +905,14 @@ void RasterizerOpenGL::SetupConstBuffers(Tegra::Engines::Maxwell3D::Regs::Shader
const auto& shader_stage = maxwell3d.state.shader_stages[static_cast<std::size_t>(stage)];
const auto& entries = shader->GetShaderEntries().const_buffers;
constexpr u64 max_binds = Tegra::Engines::Maxwell3D::Regs::MaxConstBuffers;
std::array<GLuint, max_binds> bind_buffers;
std::array<GLintptr, max_binds> bind_offsets;
std::array<GLsizeiptr, max_binds> bind_sizes;
ASSERT_MSG(entries.size() <= max_binds, "Exceeded expected number of binding points.");
// Upload only the enabled buffers from the 16 constbuffers of each shader stage
for (u32 bindpoint = 0; bindpoint < entries.size(); ++bindpoint) {
const auto& used_buffer = entries[bindpoint];
const auto& buffer = shader_stage.const_buffers[used_buffer.GetIndex()];
if (!buffer.enabled) {
// With disabled buffers set values as zero to unbind them
bind_buffers[bindpoint] = 0;
bind_offsets[bindpoint] = 0;
bind_sizes[bindpoint] = 0;
// Set values to zero to unbind buffers
bind_ubo_pushbuffer.Push(0, 0, 0);
continue;
}
@ -944,16 +940,8 @@ void RasterizerOpenGL::SetupConstBuffers(Tegra::Engines::Maxwell3D::Regs::Shader
const GLintptr const_buffer_offset = buffer_cache.UploadMemory(
buffer.address, size, static_cast<std::size_t>(uniform_buffer_alignment));
// Prepare values for multibind
bind_buffers[bindpoint] = buffer_cache.GetHandle();
bind_offsets[bindpoint] = const_buffer_offset;
bind_sizes[bindpoint] = size;
bind_ubo_pushbuffer.Push(buffer_cache.GetHandle(), const_buffer_offset, size);
}
// The first binding is reserved for emulation values
const GLuint ubo_base_binding = base_bindings.cbuf + 1;
glBindBuffersRange(GL_UNIFORM_BUFFER, ubo_base_binding, static_cast<GLsizei>(entries.size()),
bind_buffers.data(), bind_offsets.data(), bind_sizes.data());
}
void RasterizerOpenGL::SetupGlobalRegions(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage,

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@ -28,6 +28,7 @@
#include "video_core/renderer_opengl/gl_shader_cache.h"
#include "video_core/renderer_opengl/gl_shader_manager.h"
#include "video_core/renderer_opengl/gl_state.h"
#include "video_core/renderer_opengl/utils.h"
namespace Core {
class System;
@ -229,6 +230,8 @@ private:
PrimitiveAssembler primitive_assembler{buffer_cache};
GLint uniform_buffer_alignment;
BindBuffersRangePushBuffer bind_ubo_pushbuffer{GL_UNIFORM_BUFFER};
std::size_t CalculateVertexArraysSize() const;
std::size_t CalculateIndexBufferSize() const;

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@ -5,11 +5,36 @@
#include <string>
#include <fmt/format.h>
#include <glad/glad.h>
#include "common/assert.h"
#include "common/common_types.h"
#include "video_core/renderer_opengl/utils.h"
namespace OpenGL {
BindBuffersRangePushBuffer::BindBuffersRangePushBuffer(GLenum target) : target{target} {}
BindBuffersRangePushBuffer::~BindBuffersRangePushBuffer() = default;
void BindBuffersRangePushBuffer::Setup(GLuint first_) {
first = first_;
buffers.clear();
offsets.clear();
sizes.clear();
}
void BindBuffersRangePushBuffer::Push(GLuint buffer, GLintptr offset, GLsizeiptr size) {
buffers.push_back(buffer);
offsets.push_back(offset);
sizes.push_back(size);
}
void BindBuffersRangePushBuffer::Bind() const {
const std::size_t count{buffers.size()};
DEBUG_ASSERT(count == offsets.size() && count == sizes.size());
glBindBuffersRange(target, first, static_cast<GLsizei>(count), buffers.data(), offsets.data(),
sizes.data());
}
void LabelGLObject(GLenum identifier, GLuint handle, VAddr addr, std::string extra_info) {
if (!GLAD_GL_KHR_debug) {
return; // We don't need to throw an error as this is just for debugging

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@ -5,11 +5,31 @@
#pragma once
#include <string>
#include <vector>
#include <glad/glad.h>
#include "common/common_types.h"
namespace OpenGL {
class BindBuffersRangePushBuffer {
public:
BindBuffersRangePushBuffer(GLenum target);
~BindBuffersRangePushBuffer();
void Setup(GLuint first_);
void Push(GLuint buffer, GLintptr offset, GLsizeiptr size);
void Bind() const;
private:
GLenum target;
GLuint first;
std::vector<GLuint> buffers;
std::vector<GLintptr> offsets;
std::vector<GLsizeiptr> sizes;
};
void LabelGLObject(GLenum identifier, GLuint handle, VAddr addr, std::string extra_info = "");
} // namespace OpenGL