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change sRGB encoding to uniform and push constants, never rely on hardware sRGB decoding/encoding

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This commit is contained in:
goeiecool9999 2025-09-02 20:43:18 +02:00
parent de4bf7c2c1
commit 548cf3e965
10 changed files with 75 additions and 33 deletions
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14
src/Cafe/HW/Latte/Renderer/OpenGL/OpenGLRenderer.cpp
View file

@ -205,7 +205,7 @@ ImTextureID OpenGLRenderer::GenerateTexture(const std::vector<uint8>& data, cons
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glActiveTexture(GL_TEXTURE0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_SRGB, size.x, size.y, 0, GL_RGB, GL_UNSIGNED_BYTE, data.data());
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, size.x, size.y, 0, GL_RGB, GL_UNSIGNED_BYTE, data.data());
return (ImTextureID)(uintptr_t)textureId;
}
@ -318,8 +318,8 @@ void OpenGLRenderer::Initialize()
cemuLog_log(LogType::Force, "ARB_copy_image: {}", (glCopyImageSubData != NULL) ? "available" : "not supported");
cemuLog_log(LogType::Force, "NV_depth_buffer_float: {}", (glDepthRangedNV != NULL) ? "available" : "not supported");
// enable framebuffer SRGB support
glEnable(GL_FRAMEBUFFER_SRGB);
// display raw fragment shader output, we handle gamma encoding manually.
glDisable(GL_FRAMEBUFFER_SRGB);
if (this->m_vendor != GfxVendor::AMD)
{
@ -603,7 +603,7 @@ void OpenGLRenderer::DrawBackbufferQuad(LatteTextureView* texView, RendererOutpu
shader_unbind(RendererShader::ShaderType::kGeometry);
shader_bind(shader->GetVertexShader());
shader_bind(shader->GetFragmentShader());
shader->SetUniformParameters(*texView, {imageWidth, imageHeight});
shader->SetUniformParameters(*texView, {imageWidth, imageHeight}, padView);
// set viewport
glViewportIndexedf(0, imageX, imageY, imageWidth, imageHeight);
@ -620,15 +620,9 @@ void OpenGLRenderer::DrawBackbufferQuad(LatteTextureView* texView, RendererOutpu
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, useLinearTexFilter ? GL_LINEAR : GL_NEAREST);
texViewGL->samplerState.filterMag = 0xFFFFFFFF;
if ((!padView && !LatteGPUState.tvBufferUsesSRGB) || (padView && !LatteGPUState.drcBufferUsesSRGB))
glDisable(GL_FRAMEBUFFER_SRGB);
uint16 indexData[6] = { 0,1,2,3,4,5 };
glDrawRangeElements(GL_TRIANGLES, 0, 5, 6, GL_UNSIGNED_SHORT, indexData);
if ((!padView && !LatteGPUState.tvBufferUsesSRGB) || (padView && !LatteGPUState.drcBufferUsesSRGB))
glEnable(GL_FRAMEBUFFER_SRGB);
// unbind texture
texture_bindAndActivate(nullptr, 0);

5
src/Cafe/HW/Latte/Renderer/OpenGL/RendererShaderGL.cpp
View file

@ -227,6 +227,11 @@ sint32 RendererShaderGL::GetUniformLocation(const char* name)
return glGetUniformLocation(m_program, name);
}
void RendererShaderGL::SetUniform1i(sint32 location, sint32 value)
{
glProgramUniform1i(m_program, location, value);
}
void RendererShaderGL::SetUniform2fv(sint32 location, void* data, sint32 count)
{
glProgramUniform2fv(m_program, location, count, (const GLfloat*)data);

2
src/Cafe/HW/Latte/Renderer/OpenGL/RendererShaderGL.h
View file

@ -18,6 +18,8 @@ public:
GLuint GetShaderObject() const { cemu_assert_debug(m_isCompiled); return m_shader_object; }
sint32 GetUniformLocation(const char* name) override;
void SetUniform1i(sint32 location, sint32 value) override;
void SetUniform2fv(sint32 location, void* data, sint32 count) override;
void SetUniform4iv(sint32 location, void* data, sint32 count) override;

43
src/Cafe/HW/Latte/Renderer/RendererOuputShader.cpp
View file

@ -3,7 +3,7 @@
const std::string RendererOutputShader::s_copy_shader_source =
R"(
void main()
void outputShader()
{
colorOut0 = vec4(texture(textureSrc, passUV).rgb,1.0);
}
@ -49,7 +49,7 @@ vec4 bcFilter(vec2 uv, vec4 texelSize)
mix(sample1, sample0, sx), sy);
}
void main(){
void outputShader(){
vec4 texelSize = vec4( 1.0 / textureSrcResolution.xy, textureSrcResolution.xy);
colorOut0 = vec4(bcFilter(passUV, texelSize).rgb,1.0);
}
@ -108,7 +108,7 @@ vec3 BicubicHermiteTexture(vec2 uv, vec4 texelSize)
return CubicHermite(CP0X, CP1X, CP2X, CP3X, frac.y);
}
void main(){
void outputShader(){
vec4 texelSize = vec4( 1.0 / textureSrcResolution.xy, textureSrcResolution.xy);
colorOut0 = vec4(BicubicHermiteTexture(passUV, texelSize), 1.0);
}
@ -135,14 +135,16 @@ RendererOutputShader::RendererOutputShader(const std::string& vertex_source, con
m_uniformLocations[0].m_loc_textureSrcResolution = m_vertex_shader->GetUniformLocation("textureSrcResolution");
m_uniformLocations[0].m_loc_nativeResolution = m_vertex_shader->GetUniformLocation("nativeResolution");
m_uniformLocations[0].m_loc_outputResolution = m_vertex_shader->GetUniformLocation("outputResolution");
m_uniformLocations[0].m_loc_applySRGBEncoding = m_vertex_shader->GetUniformLocation("applySRGBEncoding");
m_uniformLocations[1].m_loc_textureSrcResolution = m_fragment_shader->GetUniformLocation("textureSrcResolution");
m_uniformLocations[1].m_loc_nativeResolution = m_fragment_shader->GetUniformLocation("nativeResolution");
m_uniformLocations[1].m_loc_outputResolution = m_fragment_shader->GetUniformLocation("outputResolution");
m_uniformLocations[1].m_loc_applySRGBEncoding = m_fragment_shader->GetUniformLocation("applySRGBEncoding");
}
}
void RendererOutputShader::SetUniformParameters(const LatteTextureView& texture_view, const Vector2i& output_res) const
void RendererOutputShader::SetUniformParameters(const LatteTextureView& texture_view, const Vector2i& output_res, const bool padView) const
{
sint32 effectiveWidth, effectiveHeight;
texture_view.baseTexture->GetEffectiveSize(effectiveWidth, effectiveHeight, 0);
@ -168,6 +170,11 @@ void RendererOutputShader::SetUniformParameters(const LatteTextureView& texture_
res[1] = (float)output_res.y;
shader->SetUniform2fv(locations.m_loc_outputResolution, res, 1);
}
if (locations.m_loc_applySRGBEncoding != -1)
{
shader->SetUniform1i(locations.m_loc_applySRGBEncoding, padView ? LatteGPUState.drcBufferUsesSRGB : LatteGPUState.tvBufferUsesSRGB);
}
};
setUniforms(m_vertex_shader.get(), m_uniformLocations[0]);
setUniforms(m_fragment_shader.get(), m_uniformLocations[1]);
@ -290,16 +297,44 @@ layout(push_constant) uniform pc {
vec2 textureSrcResolution;
vec2 nativeResolution;
vec2 outputResolution;
bool applySRGBEncoding; // true = app requested sRGB encoding
};
#else
uniform vec2 textureSrcResolution;
uniform vec2 nativeResolution;
uniform vec2 outputResolution;
uniform bool applySRGBEncoding;
#endif
layout(location = 0) smooth in vec2 passUV;
layout(binding = 0) uniform sampler2D textureSrc;
layout(location = 0) out vec4 colorOut0;
float sRGBEncode(float linear)
{
if(linear <= 0.0031308)
return 12.92f * linear;
else
return 1.055f * pow(linear, 1.0f / 2.4f) - 0.055f;
}
vec3 sRGBEncode(vec3 linear)
{
return vec3(sRGBEncode(linear.r), sRGBEncode(linear.g), sRGBEncode(linear.b));
}
// fwd. declaration
void outputShader();
void main()
{
outputShader(); // sets colorOut0
if(applySRGBEncoding)
{
colorOut0 = vec4(sRGBEncode(colorOut0.xyz), 1.0f);
}
}
)" + shaderSrc;
}
void RendererOutputShader::InitializeStatic()

3
src/Cafe/HW/Latte/Renderer/RendererOuputShader.h
View file

@ -17,7 +17,7 @@ public:
RendererOutputShader(const std::string& vertex_source, const std::string& fragment_source);
virtual ~RendererOutputShader() = default;
void SetUniformParameters(const LatteTextureView& texture_view, const Vector2i& output_res) const;
void SetUniformParameters(const LatteTextureView& texture_view, const Vector2i& output_res, const bool padView) const;
RendererShader* GetVertexShader() const
{
@ -55,6 +55,7 @@ protected:
sint32 m_loc_textureSrcResolution = -1;
sint32 m_loc_nativeResolution = -1;
sint32 m_loc_outputResolution = -1;
sint32 m_loc_applySRGBEncoding = -1;
} m_uniformLocations[2]{};
private:

1
src/Cafe/HW/Latte/Renderer/RendererShader.h
View file

@ -20,6 +20,7 @@ public:
virtual sint32 GetUniformLocation(const char* name) = 0;
virtual void SetUniform1i(sint32 location, sint32 value) = 0;
virtual void SetUniform2fv(sint32 location, void* data, sint32 count) = 0;
virtual void SetUniform4iv(sint32 location, void* data, sint32 count) = 0;

5
src/Cafe/HW/Latte/Renderer/Vulkan/RendererShaderVk.cpp
View file

@ -232,6 +232,11 @@ sint32 RendererShaderVk::GetUniformLocation(const char* name)
return 0;
}
void RendererShaderVk::SetUniform1i(sint32 location, sint32 value)
{
cemu_assert_suspicious();
}
void RendererShaderVk::SetUniform2fv(sint32 location, void* data, sint32 count)
{
cemu_assert_suspicious();

1
src/Cafe/HW/Latte/Renderer/Vulkan/RendererShaderVk.h
View file

@ -32,6 +32,7 @@ public:
static void Shutdown();
sint32 GetUniformLocation(const char* name) override;
void SetUniform1i(sint32 location, sint32 value) override;
void SetUniform2fv(sint32 location, void* data, sint32 count) override;
void SetUniform4iv(sint32 location, void* data, sint32 count) override;
VkShaderModule& GetShaderModule() { return m_shader_module; }

14
src/Cafe/HW/Latte/Renderer/Vulkan/SwapchainInfoVk.cpp
View file

@ -319,18 +319,8 @@ VkSurfaceFormatKHR SwapchainInfoVk::ChooseSurfaceFormat(const std::vector<VkSurf
for (const auto& format : formats)
{
bool useSRGB = mainWindow ? LatteGPUState.tvBufferUsesSRGB : LatteGPUState.drcBufferUsesSRGB;
if (useSRGB)
{
if (format.format == VK_FORMAT_B8G8R8A8_SRGB && format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR)
return format;
}
else
{
if (format.format == VK_FORMAT_B8G8R8A8_UNORM && format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR)
return format;
}
if (format.format == VK_FORMAT_B8G8R8A8_UNORM && format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR)
return format;
}
return formats[0];

20
src/Cafe/HW/Latte/Renderer/Vulkan/VulkanRenderer.cpp
View file

@ -2659,7 +2659,7 @@ VkPipeline VulkanRenderer::backbufferBlit_createGraphicsPipeline(VkDescriptorSet
VkPushConstantRange pushConstantRange{
.stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT,
.offset = 0,
.size = 3 * sizeof(float) * 2 // 3 vec2's
.size = 3 * sizeof(float) * 2 + 1 // 3 vec2's + 1 bool
};
VkPipelineLayoutCreateInfo pipelineLayoutInfo{};
@ -3046,24 +3046,32 @@ void VulkanRenderer::DrawBackbufferQuad(LatteTextureView* texView, RendererOutpu
vkCmdBindDescriptorSets(m_state.currentCommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipelineLayout, 0, 1, &descriptSet, 0, nullptr);
// update push constants
Vector2f pushData[3];
struct
{
Vector2f vecs[3];
bool applySRGBEncoding;
} pushData;
// textureSrcResolution
sint32 effectiveWidth, effectiveHeight;
texView->baseTexture->GetEffectiveSize(effectiveWidth, effectiveHeight, 0);
pushData[0] = {(float)effectiveWidth, (float)effectiveHeight};
pushData.vecs[0] = {(float)effectiveWidth, (float)effectiveHeight};
// nativeResolution
pushData[1] = {
pushData.vecs[1] = {
(float)texViewVk->baseTexture->width,
(float)texViewVk->baseTexture->height,
};
// outputResolution
pushData[2] = {(float)imageWidth,(float)imageHeight};
pushData.vecs[2] = {(float)imageWidth,(float)imageHeight};
vkCmdPushConstants(m_state.currentCommandBuffer, m_pipelineLayout, VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(float) * 2 * 3, &pushData);
// applySRGBEncoding
pushData.applySRGBEncoding = padView ? LatteGPUState.drcBufferUsesSRGB : LatteGPUState.tvBufferUsesSRGB;
vkCmdPushConstants(m_state.currentCommandBuffer, m_pipelineLayout, VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(pushData), &pushData);
vkCmdDraw(m_state.currentCommandBuffer, 6, 1, 0, 0);