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dolphin/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp

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// Copyright 2011 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "VideoBackends/OGL/ProgramShaderCache.h"
#include <array>
#include <atomic>
#include <memory>
#include <string>
#include "Common/Align.h"
#include "Common/Assert.h"
#include "Common/CommonTypes.h"
#include "Common/FileUtil.h"
#include "Common/GL/GLContext.h"
#include "Common/Logging/Log.h"
#include "Common/MsgHandler.h"
#include "Common/StringUtil.h"
#include "Common/Version.h"
#include "Core/ConfigManager.h"
#include "VideoBackends/OGL/OGLRender.h"
#include "VideoBackends/OGL/OGLShader.h"
#include "VideoBackends/OGL/OGLStreamBuffer.h"
#include "VideoBackends/OGL/OGLVertexManager.h"
#include "VideoCommon/AsyncShaderCompiler.h"
#include "VideoCommon/GeometryShaderManager.h"
#include "VideoCommon/PixelShaderManager.h"
#include "VideoCommon/Statistics.h"
#include "VideoCommon/VertexLoaderManager.h"
#include "VideoCommon/VertexShaderManager.h"
#include "VideoCommon/VideoBackendBase.h"
#include "VideoCommon/VideoConfig.h"
namespace OGL
{
u32 ProgramShaderCache::s_ubo_buffer_size;
s32 ProgramShaderCache::s_ubo_align = 1;
GLuint ProgramShaderCache::s_attributeless_VBO = 0;
GLuint ProgramShaderCache::s_attributeless_VAO = 0;
GLuint ProgramShaderCache::s_last_VAO = 0;
static std::unique_ptr<StreamBuffer> s_buffer;
static int num_failures = 0;
static GLuint CurrentProgram = 0;
ProgramShaderCache::PipelineProgramMap ProgramShaderCache::s_pipeline_programs;
std::mutex ProgramShaderCache::s_pipeline_program_lock;
static std::string s_glsl_header;
static std::atomic<u64> s_shader_counter{0};
static thread_local bool s_is_shared_context = false;
static std::string GetGLSLVersionString()
{
GlslVersion v = g_ogl_config.eSupportedGLSLVersion;
switch (v)
{
case GlslEs300:
return "#version 300 es";
case GlslEs310:
return "#version 310 es";
case GlslEs320:
return "#version 320 es";
case Glsl130:
return "#version 130";
case Glsl140:
return "#version 140";
case Glsl150:
return "#version 150";
case Glsl330:
return "#version 330";
case Glsl400:
return "#version 400";
case Glsl430:
return "#version 430";
default:
// Shouldn't ever hit this
return "#version ERROR";
}
}
void SHADER::SetProgramVariables()
{
if (g_ActiveConfig.backend_info.bSupportsBindingLayout)
return;
// To set uniform blocks/uniforms, the program must be active. We restore the
// current binding at the end of this method to maintain the invariant.
glUseProgram(glprogid);
// Bind UBO and texture samplers
GLint PSBlock_id = glGetUniformBlockIndex(glprogid, "PSBlock");
GLint VSBlock_id = glGetUniformBlockIndex(glprogid, "VSBlock");
GLint GSBlock_id = glGetUniformBlockIndex(glprogid, "GSBlock");
GLint UBERBlock_id = glGetUniformBlockIndex(glprogid, "UBERBlock");
if (PSBlock_id != -1)
glUniformBlockBinding(glprogid, PSBlock_id, 1);
if (VSBlock_id != -1)
glUniformBlockBinding(glprogid, VSBlock_id, 2);
if (GSBlock_id != -1)
glUniformBlockBinding(glprogid, GSBlock_id, 3);
if (UBERBlock_id != -1)
glUniformBlockBinding(glprogid, UBERBlock_id, 4);
// Bind Texture Samplers
for (int a = 0; a < 8; ++a)
{
// Still need to get sampler locations since we aren't binding them statically in the shaders
int loc = glGetUniformLocation(glprogid, StringFromFormat("samp[%d]", a).c_str());
if (loc < 0)
loc = glGetUniformLocation(glprogid, StringFromFormat("samp%d", a).c_str());
if (loc >= 0)
glUniform1i(loc, a);
}
// Restore previous program binding.
glUseProgram(CurrentProgram);
}
void SHADER::SetProgramBindings(bool is_compute)
{
if (!is_compute)
{
if (g_ActiveConfig.backend_info.bSupportsDualSourceBlend)
{
// So we do support extended blending
// So we need to set a few more things here.
// Bind our out locations
glBindFragDataLocationIndexed(glprogid, 0, 0, "ocol0");
glBindFragDataLocationIndexed(glprogid, 0, 1, "ocol1");
}
// Need to set some attribute locations
glBindAttribLocation(glprogid, SHADER_POSITION_ATTRIB, "rawpos");
glBindAttribLocation(glprogid, SHADER_POSMTX_ATTRIB, "posmtx");
glBindAttribLocation(glprogid, SHADER_COLOR0_ATTRIB, "rawcolor0");
glBindAttribLocation(glprogid, SHADER_COLOR1_ATTRIB, "rawcolor1");
glBindAttribLocation(glprogid, SHADER_NORM0_ATTRIB, "rawnorm0");
glBindAttribLocation(glprogid, SHADER_NORM1_ATTRIB, "rawnorm1");
glBindAttribLocation(glprogid, SHADER_NORM2_ATTRIB, "rawnorm2");
}
for (int i = 0; i < 8; i++)
{
std::string attrib_name = StringFromFormat("rawtex%d", i);
glBindAttribLocation(glprogid, SHADER_TEXTURE0_ATTRIB + i, attrib_name.c_str());
}
}
void SHADER::Bind() const
{
if (CurrentProgram != glprogid)
{
INCSTAT(g_stats.this_frame.num_shader_changes);
glUseProgram(glprogid);
CurrentProgram = glprogid;
}
}
void SHADER::DestroyShaders()
{
if (vsid)
{
glDeleteShader(vsid);
vsid = 0;
}
if (gsid)
{
glDeleteShader(gsid);
gsid = 0;
}
if (psid)
{
glDeleteShader(psid);
psid = 0;
}
}
bool PipelineProgramKey::operator!=(const PipelineProgramKey& rhs) const
{
return !operator==(rhs);
}
bool PipelineProgramKey::operator==(const PipelineProgramKey& rhs) const
{
return std::tie(vertex_shader_id, geometry_shader_id, pixel_shader_id) ==
std::tie(rhs.vertex_shader_id, rhs.geometry_shader_id, rhs.pixel_shader_id);
}
bool PipelineProgramKey::operator<(const PipelineProgramKey& rhs) const
{
return std::tie(vertex_shader_id, geometry_shader_id, pixel_shader_id) <
std::tie(rhs.vertex_shader_id, rhs.geometry_shader_id, rhs.pixel_shader_id);
}
std::size_t PipelineProgramKeyHash::operator()(const PipelineProgramKey& key) const
{
// We would really want std::hash_combine for this..
std::hash<u64> hasher;
return hasher(key.vertex_shader_id) + hasher(key.geometry_shader_id) +
hasher(key.pixel_shader_id);
}
StreamBuffer* ProgramShaderCache::GetUniformBuffer()
{
return s_buffer.get();
}
u32 ProgramShaderCache::GetUniformBufferAlignment()
{
return s_ubo_align;
}
void ProgramShaderCache::UploadConstants()
{
if (PixelShaderManager::dirty || VertexShaderManager::dirty || GeometryShaderManager::dirty)
{
auto buffer = s_buffer->Map(s_ubo_buffer_size, s_ubo_align);
memcpy(buffer.first, &PixelShaderManager::constants, sizeof(PixelShaderConstants));
memcpy(buffer.first + Common::AlignUp(sizeof(PixelShaderConstants), s_ubo_align),
&VertexShaderManager::constants, sizeof(VertexShaderConstants));
memcpy(buffer.first + Common::AlignUp(sizeof(PixelShaderConstants), s_ubo_align) +
Common::AlignUp(sizeof(VertexShaderConstants), s_ubo_align),
&GeometryShaderManager::constants, sizeof(GeometryShaderConstants));
s_buffer->Unmap(s_ubo_buffer_size);
glBindBufferRange(GL_UNIFORM_BUFFER, 1, s_buffer->m_buffer, buffer.second,
sizeof(PixelShaderConstants));
glBindBufferRange(GL_UNIFORM_BUFFER, 2, s_buffer->m_buffer,
buffer.second + Common::AlignUp(sizeof(PixelShaderConstants), s_ubo_align),
sizeof(VertexShaderConstants));
glBindBufferRange(GL_UNIFORM_BUFFER, 3, s_buffer->m_buffer,
buffer.second + Common::AlignUp(sizeof(PixelShaderConstants), s_ubo_align) +
Common::AlignUp(sizeof(VertexShaderConstants), s_ubo_align),
sizeof(GeometryShaderConstants));
PixelShaderManager::dirty = false;
VertexShaderManager::dirty = false;
GeometryShaderManager::dirty = false;
ADDSTAT(g_stats.this_frame.bytes_uniform_streamed, s_ubo_buffer_size);
}
}
void ProgramShaderCache::UploadConstants(const void* data, u32 data_size)
{
// allocate and copy
const u32 alloc_size = Common::AlignUp(data_size, s_ubo_align);
auto buffer = s_buffer->Map(alloc_size, s_ubo_align);
std::memcpy(buffer.first, data, data_size);
s_buffer->Unmap(alloc_size);
// bind the same sub-buffer to all stages
for (u32 index = 1; index <= 3; index++)
glBindBufferRange(GL_UNIFORM_BUFFER, index, s_buffer->m_buffer, buffer.second, data_size);
ADDSTAT(g_stats.this_frame.bytes_uniform_streamed, data_size);
}
bool ProgramShaderCache::CompileComputeShader(SHADER& shader, std::string_view code)
{
// We need to enable GL_ARB_compute_shader for drivers that support the extension,
// but not GLSL 4.3. Mesa is one example.
std::string full_code;
if (g_ActiveConfig.backend_info.bSupportsComputeShaders &&
g_ogl_config.eSupportedGLSLVersion < Glsl430)
{
full_code = "#extension GL_ARB_compute_shader : enable\n";
}
full_code += code;
const GLuint shader_id = CompileSingleShader(GL_COMPUTE_SHADER, full_code);
if (!shader_id)
return false;
shader.glprogid = glCreateProgram();
glAttachShader(shader.glprogid, shader_id);
shader.SetProgramBindings(true);
glLinkProgram(shader.glprogid);
// original shaders aren't needed any more
glDeleteShader(shader_id);
if (!CheckProgramLinkResult(shader.glprogid, full_code, {}, {}))
{
shader.Destroy();
return false;
}
shader.SetProgramVariables();
return true;
}
GLuint ProgramShaderCache::CompileSingleShader(GLenum type, std::string_view code)
{
const GLuint result = glCreateShader(type);
constexpr GLsizei num_strings = 2;
const std::array<const char*, num_strings> src{
s_glsl_header.data(),
code.data(),
};
const std::array<GLint, num_strings> src_sizes{
static_cast<GLint>(s_glsl_header.size()),
static_cast<GLint>(code.size()),
};
glShaderSource(result, num_strings, src.data(), src_sizes.data());
glCompileShader(result);
if (!CheckShaderCompileResult(result, type, code))
{
// Don't try to use this shader
glDeleteShader(result);
return 0;
}
return result;
}
bool ProgramShaderCache::CheckShaderCompileResult(GLuint id, GLenum type, std::string_view code)
{
GLint compileStatus;
glGetShaderiv(id, GL_COMPILE_STATUS, &compileStatus);
GLsizei length = 0;
glGetShaderiv(id, GL_INFO_LOG_LENGTH, &length);
if (compileStatus != GL_TRUE || length > 1)
{
std::string info_log;
info_log.resize(length);
glGetShaderInfoLog(id, length, &length, &info_log[0]);
const char* prefix = "";
switch (type)
{
case GL_VERTEX_SHADER:
prefix = "vs";
break;
case GL_GEOMETRY_SHADER:
prefix = "gs";
break;
case GL_FRAGMENT_SHADER:
prefix = "ps";
break;
case GL_COMPUTE_SHADER:
prefix = "cs";
break;
}
if (compileStatus != GL_TRUE)
{
ERROR_LOG_FMT(VIDEO, "{} failed compilation:\n{}", prefix, info_log);
std::string filename = VideoBackendBase::BadShaderFilename(prefix, num_failures++);
std::ofstream file;
File::OpenFStream(file, filename, std::ios_base::out);
file << s_glsl_header << code << info_log;
file << "\n";
file << "Dolphin Version: " + Common::scm_rev_str + "\n";
file << "Video Backend: " + g_video_backend->GetDisplayName();
file.close();
PanicAlertFmt("Failed to compile {} shader: {}\n"
"Debug info ({}, {}, {}):\n{}",
prefix, filename, g_ogl_config.gl_vendor, g_ogl_config.gl_renderer,
g_ogl_config.gl_version, info_log);
return false;
}
WARN_LOG_FMT(VIDEO, "{} compiled with warnings:\n{}", prefix, info_log);
}
return true;
}
bool ProgramShaderCache::CheckProgramLinkResult(GLuint id, std::string_view vcode,
std::string_view pcode, std::string_view gcode)
{
GLint linkStatus;
glGetProgramiv(id, GL_LINK_STATUS, &linkStatus);
GLsizei length = 0;
glGetProgramiv(id, GL_INFO_LOG_LENGTH, &length);
if (linkStatus != GL_TRUE || length > 1)
{
std::string info_log;
info_log.resize(length);
glGetProgramInfoLog(id, length, &length, &info_log[0]);
if (linkStatus != GL_TRUE)
{
ERROR_LOG_FMT(VIDEO, "Program failed linking:\n{}", info_log);
std::string filename = VideoBackendBase::BadShaderFilename("p", num_failures++);
std::ofstream file;
File::OpenFStream(file, filename, std::ios_base::out);
if (!vcode.empty())
file << s_glsl_header << vcode << '\n';
if (!gcode.empty())
file << s_glsl_header << gcode << '\n';
if (!pcode.empty())
file << s_glsl_header << pcode << '\n';
file << info_log;
file << "\n";
file << "Dolphin Version: " + Common::scm_rev_str + "\n";
file << "Video Backend: " + g_video_backend->GetDisplayName();
file.close();
PanicAlertFmt("Failed to link shaders: {}\n"
"Debug info ({}, {}, {}):\n{}",
filename, g_ogl_config.gl_vendor, g_ogl_config.gl_renderer,
g_ogl_config.gl_version, info_log);
return false;
}
WARN_LOG_FMT(VIDEO, "Program linked with warnings:\n{}", info_log);
}
return true;
}
void ProgramShaderCache::Init()
{
// We have to get the UBO alignment here because
// if we generate a buffer that isn't aligned
// then the UBO will fail.
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &s_ubo_align);
s_ubo_buffer_size =
static_cast<u32>(Common::AlignUp(sizeof(PixelShaderConstants), s_ubo_align) +
Common::AlignUp(sizeof(VertexShaderConstants), s_ubo_align) +
Common::AlignUp(sizeof(GeometryShaderConstants), s_ubo_align));
// We multiply by *4*4 because we need to get down to basic machine units.
// So multiply by four to get how many floats we have from vec4s
// Then once more to get bytes
s_buffer = StreamBuffer::Create(GL_UNIFORM_BUFFER, VertexManagerBase::UNIFORM_STREAM_BUFFER_SIZE);
CreateHeader();
CreateAttributelessVAO();
CurrentProgram = 0;
}
void ProgramShaderCache::Shutdown()
{
s_buffer.reset();
glBindVertexArray(0);
glDeleteBuffers(1, &s_attributeless_VBO);
glDeleteVertexArrays(1, &s_attributeless_VAO);
s_attributeless_VBO = 0;
s_attributeless_VAO = 0;
s_last_VAO = 0;
// All pipeline programs should have been released.
DEBUG_ASSERT(s_pipeline_programs.empty());
s_pipeline_programs.clear();
}
void ProgramShaderCache::CreateAttributelessVAO()
{
glGenVertexArrays(1, &s_attributeless_VAO);
// In a compatibility context, we require a valid, bound array buffer.
glGenBuffers(1, &s_attributeless_VBO);
// Initialize the buffer with nothing. 16 floats is an arbitrary size that may work around driver
// issues.
glBindBuffer(GL_ARRAY_BUFFER, s_attributeless_VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * 16, nullptr, GL_STATIC_DRAW);
// We must also define vertex attribute 0.
glBindVertexArray(s_attributeless_VAO);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, nullptr);
glEnableVertexAttribArray(0);
}
void ProgramShaderCache::BindVertexFormat(const GLVertexFormat* vertex_format)
{
u32 new_VAO = vertex_format ? vertex_format->VAO : s_attributeless_VAO;
if (s_last_VAO == new_VAO)
return;
glBindVertexArray(new_VAO);
s_last_VAO = new_VAO;
}
bool ProgramShaderCache::IsValidVertexFormatBound()
{
return s_last_VAO != 0 && s_last_VAO != s_attributeless_VAO;
}
void ProgramShaderCache::InvalidateVertexFormat()
{
s_last_VAO = 0;
}
void ProgramShaderCache::InvalidateVertexFormatIfBound(GLuint vao)
{
if (s_last_VAO == vao)
s_last_VAO = 0;
}
void ProgramShaderCache::InvalidateLastProgram()
{
CurrentProgram = 0;
}
PipelineProgram* ProgramShaderCache::GetPipelineProgram(const GLVertexFormat* vertex_format,
const OGLShader* vertex_shader,
const OGLShader* geometry_shader,
const OGLShader* pixel_shader,
const void* cache_data,
size_t cache_data_size)
{
PipelineProgramKey key = {vertex_shader ? vertex_shader->GetID() : 0,
geometry_shader ? geometry_shader->GetID() : 0,
pixel_shader ? pixel_shader->GetID() : 0};
{
std::lock_guard guard{s_pipeline_program_lock};
auto iter = s_pipeline_programs.find(key);
if (iter != s_pipeline_programs.end())
{
iter->second->reference_count++;
return iter->second.get();
}
}
std::unique_ptr<PipelineProgram> prog = std::make_unique<PipelineProgram>();
prog->key = key;
prog->shader.glprogid = glCreateProgram();
// Use the cache data, if present. If this fails, we want to return an error, so the shader cache
// doesn't attempt to use the same binary data in the future.
if (cache_data_size >= sizeof(u32))
{
u32 program_binary_type;
std::memcpy(&program_binary_type, cache_data, sizeof(u32));
glProgramBinary(prog->shader.glprogid, static_cast<GLenum>(program_binary_type),
static_cast<const u8*>(cache_data) + sizeof(u32),
static_cast<GLsizei>(cache_data_size - sizeof(u32)));
// Check the link status. If this fails, it means the binary was invalid.
GLint link_status;
glGetProgramiv(prog->shader.glprogid, GL_LINK_STATUS, &link_status);
if (link_status != GL_TRUE)
{
WARN_LOG_FMT(VIDEO, "Failed to create GL program from program binary.");
prog->shader.Destroy();
return nullptr;
}
// We don't want to retrieve this binary and duplicate entries in the cache again.
// See the explanation in OGLPipeline.cpp.
prog->binary_retrieved = true;
}
else
{
// We temporarily change the vertex array to the pipeline's vertex format.
// This can prevent the NVIDIA OpenGL driver from recompiling on first use.
GLuint vao = vertex_format ? vertex_format->VAO : s_attributeless_VAO;
if (s_is_shared_context || vao != s_last_VAO)
glBindVertexArray(vao);
// Attach shaders.
ASSERT(vertex_shader && vertex_shader->GetStage() == ShaderStage::Vertex);
ASSERT(pixel_shader && pixel_shader->GetStage() == ShaderStage::Pixel);
glAttachShader(prog->shader.glprogid, vertex_shader->GetGLShaderID());
glAttachShader(prog->shader.glprogid, pixel_shader->GetGLShaderID());
if (geometry_shader)
{
ASSERT(geometry_shader->GetStage() == ShaderStage::Geometry);
glAttachShader(prog->shader.glprogid, geometry_shader->GetGLShaderID());
}
if (g_ActiveConfig.backend_info.bSupportsPipelineCacheData)
glProgramParameteri(prog->shader.glprogid, GL_PROGRAM_BINARY_RETRIEVABLE_HINT, GL_TRUE);
// Link program.
prog->shader.SetProgramBindings(false);
glLinkProgram(prog->shader.glprogid);
// Restore VAO binding after linking.
if (!s_is_shared_context && vao != s_last_VAO)
glBindVertexArray(s_last_VAO);
if (!CheckProgramLinkResult(prog->shader.glprogid,
vertex_shader ? vertex_shader->GetSource() : std::string_view{},
geometry_shader ? geometry_shader->GetSource() : std::string_view{},
pixel_shader ? pixel_shader->GetSource() : std::string_view{}))
{
prog->shader.Destroy();
return nullptr;
}
}
// Lock to insert. A duplicate program may have been created in the meantime.
std::lock_guard guard{s_pipeline_program_lock};
auto iter = s_pipeline_programs.find(key);
if (iter != s_pipeline_programs.end())
{
// Destroy this program, and use the one which was created first.
prog->shader.Destroy();
iter->second->reference_count++;
return iter->second.get();
}
// Set program variables on the shader which will be returned.
// This is only needed for drivers which don't support binding layout.
prog->shader.SetProgramVariables();
// If this is a shared context, ensure we sync before we return the program to
// the main thread. If we don't do this, some driver can lock up (e.g. AMD).
if (s_is_shared_context)
glFinish();
auto ip = s_pipeline_programs.emplace(key, std::move(prog));
return ip.first->second.get();
}
void ProgramShaderCache::ReleasePipelineProgram(PipelineProgram* prog)
{
if (--prog->reference_count > 0)
return;
prog->shader.Destroy();
std::lock_guard guard{s_pipeline_program_lock};
const auto iter = s_pipeline_programs.find(prog->key);
ASSERT(iter != s_pipeline_programs.end() && prog == iter->second.get());
s_pipeline_programs.erase(iter);
}
void ProgramShaderCache::CreateHeader()
{
GlslVersion v = g_ogl_config.eSupportedGLSLVersion;
bool is_glsles = v >= GlslEs300;
std::string SupportedESPointSize;
std::string SupportedESTextureBuffer;
switch (g_ogl_config.SupportedESPointSize)
{
case 1:
SupportedESPointSize = "#extension GL_OES_geometry_point_size : enable";
break;
case 2:
SupportedESPointSize = "#extension GL_EXT_geometry_point_size : enable";
break;
default:
SupportedESPointSize = "";
break;
}
switch (g_ogl_config.SupportedESTextureBuffer)
{
case EsTexbufType::TexbufExt:
SupportedESTextureBuffer = "#extension GL_EXT_texture_buffer : enable";
break;
case EsTexbufType::TexbufOes:
SupportedESTextureBuffer = "#extension GL_OES_texture_buffer : enable";
break;
case EsTexbufType::TexbufCore:
case EsTexbufType::TexbufNone:
SupportedESTextureBuffer = "";
break;
}
std::string earlyz_string;
if (g_ActiveConfig.backend_info.bSupportsEarlyZ)
{
if (g_ogl_config.bSupportsImageLoadStore)
{
earlyz_string = "#define FORCE_EARLY_Z layout(early_fragment_tests) in\n";
}
else if (g_ogl_config.bSupportsConservativeDepth)
{
// See PixelShaderGen for details about this fallback.
earlyz_string = "#define FORCE_EARLY_Z layout(depth_unchanged) out float gl_FragDepth\n";
earlyz_string += "#extension GL_ARB_conservative_depth : enable\n";
}
}
std::string framebuffer_fetch_string;
switch (g_ogl_config.SupportedFramebufferFetch)
{
case EsFbFetchType::FbFetchExt:
framebuffer_fetch_string = "#extension GL_EXT_shader_framebuffer_fetch: enable\n"
"#define FB_FETCH_VALUE real_ocol0\n"
"#define FRAGMENT_INOUT inout";
break;
case EsFbFetchType::FbFetchArm:
framebuffer_fetch_string = "#extension GL_ARM_shader_framebuffer_fetch: enable\n"
"#define FB_FETCH_VALUE gl_LastFragColorARM\n"
"#define FRAGMENT_INOUT out";
break;
case EsFbFetchType::FbFetchNone:
framebuffer_fetch_string = "";
break;
}
std::string shader_shuffle_string;
if (g_ogl_config.bSupportsShaderThreadShuffleNV)
{
shader_shuffle_string = R"(
#extension GL_NV_shader_thread_group : enable
#extension GL_NV_shader_thread_shuffle : enable
#define SUPPORTS_SUBGROUP_REDUCTION 1
// The xor shuffle below produces incorrect results if all threads in a warp are not active.
#define CAN_USE_SUBGROUP_REDUCTION (ballotThreadNV(true) == 0xFFFFFFFFu)
#define IS_HELPER_INVOCATION gl_HelperThreadNV
#define IS_FIRST_ACTIVE_INVOCATION (gl_ThreadInWarpNV == findLSB(ballotThreadNV(!gl_HelperThreadNV)))
#define SUBGROUP_REDUCTION(func, value) value = func(value, shuffleXorNV(value, 16, 32)); \
value = func(value, shuffleXorNV(value, 8, 32)); \
value = func(value, shuffleXorNV(value, 4, 32)); \
value = func(value, shuffleXorNV(value, 2, 32)); \
value = func(value, shuffleXorNV(value, 1, 32));
#define SUBGROUP_MIN(value) SUBGROUP_REDUCTION(min, value)
#define SUBGROUP_MAX(value) SUBGROUP_REDUCTION(max, value)
)";
}
s_glsl_header = StringFromFormat(
"%s\n"
"%s\n" // ubo
"%s\n" // early-z
"%s\n" // 420pack
"%s\n" // msaa
"%s\n" // Input/output/sampler binding
"%s\n" // Varying location
"%s\n" // storage buffer
"%s\n" // shader5
"%s\n" // SSAA
"%s\n" // Geometry point size
"%s\n" // AEP
"%s\n" // texture buffer
"%s\n" // ES texture buffer
"%s\n" // ES dual source blend
"%s\n" // shader image load store
"%s\n" // shader framebuffer fetch
"%s\n" // shader thread shuffle
// Precision defines for GLSL ES
"%s\n"
"%s\n"
"%s\n"
"%s\n"
"%s\n"
"%s\n"
// Silly differences
"#define API_OPENGL 1\n"
"#define float2 vec2\n"
"#define float3 vec3\n"
"#define float4 vec4\n"
"#define uint2 uvec2\n"
"#define uint3 uvec3\n"
"#define uint4 uvec4\n"
"#define int2 ivec2\n"
"#define int3 ivec3\n"
"#define int4 ivec4\n"
"#define frac fract\n"
"#define lerp mix\n"
,
GetGLSLVersionString().c_str(),
v < Glsl140 ? "#extension GL_ARB_uniform_buffer_object : enable" : "", earlyz_string.c_str(),
(g_ActiveConfig.backend_info.bSupportsBindingLayout && v < GlslEs310) ?
"#extension GL_ARB_shading_language_420pack : enable" :
"",
(g_ogl_config.bSupportsMSAA && v < Glsl150) ?
"#extension GL_ARB_texture_multisample : enable" :
"",
// Attribute and fragment output bindings are still done via glBindAttribLocation and
// glBindFragDataLocation. In the future this could be moved to the layout qualifier
// in GLSL, but requires verification of GL_ARB_explicit_attrib_location.
g_ActiveConfig.backend_info.bSupportsBindingLayout ?
"#define ATTRIBUTE_LOCATION(x)\n"
"#define FRAGMENT_OUTPUT_LOCATION(x)\n"
"#define FRAGMENT_OUTPUT_LOCATION_INDEXED(x, y)\n"
"#define UBO_BINDING(packing, x) layout(packing, binding = x)\n"
"#define SAMPLER_BINDING(x) layout(binding = x)\n"
"#define TEXEL_BUFFER_BINDING(x) layout(binding = x)\n"
"#define SSBO_BINDING(x) layout(binding = x)\n"
"#define IMAGE_BINDING(format, x) layout(format, binding = x)\n" :
"#define ATTRIBUTE_LOCATION(x)\n"
"#define FRAGMENT_OUTPUT_LOCATION(x)\n"
"#define FRAGMENT_OUTPUT_LOCATION_INDEXED(x, y)\n"
"#define UBO_BINDING(packing, x) layout(packing)\n"
"#define SAMPLER_BINDING(x)\n"
"#define TEXEL_BUFFER_BINDING(x)\n"
"#define SSBO_BINDING(x)\n"
"#define IMAGE_BINDING(format, x) layout(format)\n",
// Input/output blocks are matched by name during program linking
"#define VARYING_LOCATION(x)\n",
!is_glsles && g_ActiveConfig.backend_info.bSupportsFragmentStoresAndAtomics ?
"#extension GL_ARB_shader_storage_buffer_object : enable" :
"",
v < Glsl400 && g_ActiveConfig.backend_info.bSupportsGSInstancing ?
"#extension GL_ARB_gpu_shader5 : enable" :
"",
v < Glsl400 && g_ActiveConfig.backend_info.bSupportsSSAA ?
"#extension GL_ARB_sample_shading : enable" :
"",
SupportedESPointSize.c_str(),
g_ogl_config.bSupportsAEP ? "#extension GL_ANDROID_extension_pack_es31a : enable" : "",
v < Glsl140 && g_ActiveConfig.backend_info.bSupportsPaletteConversion ?
"#extension GL_ARB_texture_buffer_object : enable" :
"",
SupportedESTextureBuffer.c_str(),
is_glsles && g_ActiveConfig.backend_info.bSupportsDualSourceBlend ?
"#extension GL_EXT_blend_func_extended : enable" :
""
,
g_ogl_config.bSupportsImageLoadStore &&
((!is_glsles && v < Glsl430) || (is_glsles && v < GlslEs310)) ?
"#extension GL_ARB_shader_image_load_store : enable" :
"",
framebuffer_fetch_string.c_str(), shader_shuffle_string.c_str(),
is_glsles ? "precision highp float;" : "", is_glsles ? "precision highp int;" : "",
is_glsles ? "precision highp sampler2DArray;" : "",
(is_glsles && g_ActiveConfig.backend_info.bSupportsPaletteConversion) ?
"precision highp usamplerBuffer;" :
"",
v > GlslEs300 ? "precision highp sampler2DMS;" : "",
v >= GlslEs310 ? "precision highp image2DArray;" : "");
}
u64 ProgramShaderCache::GenerateShaderID()
{
return s_shader_counter++;
}
bool SharedContextAsyncShaderCompiler::WorkerThreadInitMainThread(void** param)
{
std::unique_ptr<GLContext> context =
static_cast<Renderer*>(g_renderer.get())->GetMainGLContext()->CreateSharedContext();
if (!context)
{
PanicAlertFmt("Failed to create shared context for shader compiling.");
return false;
}
*param = context.release();
return true;
}
bool SharedContextAsyncShaderCompiler::WorkerThreadInitWorkerThread(void* param)
{
GLContext* context = static_cast<GLContext*>(param);
if (!context->MakeCurrent())
return false;
s_is_shared_context = true;
// Make the state match the main context to have a better chance of avoiding recompiles.
if (!context->IsGLES())
glEnable(GL_PROGRAM_POINT_SIZE);
if (g_ActiveConfig.backend_info.bSupportsClipControl)
glClipControl(GL_LOWER_LEFT, GL_ZERO_TO_ONE);
if (g_ActiveConfig.backend_info.bSupportsDepthClamp)
{
glEnable(GL_CLIP_DISTANCE0);
glEnable(GL_CLIP_DISTANCE1);
glEnable(GL_DEPTH_CLAMP);
}
if (g_ActiveConfig.backend_info.bSupportsPrimitiveRestart)
GLUtil::EnablePrimitiveRestart(context);
return true;
}
void SharedContextAsyncShaderCompiler::WorkerThreadExit(void* param)
{
GLContext* context = static_cast<GLContext*>(param);
context->ClearCurrent();
delete context;
}
} // namespace OGL
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