diff options
| author | Jonathan Hamilton <jtrhamilton@gmail.com> | 2017-10-25 22:44:39 -0700 |
|---|---|---|
| committer | Jonathan Hamilton <jtrhamilton@gmail.com> | 2018-01-05 09:56:46 -0800 |
| commit | 29a9ed043bd0946497edf7c4d392ce46041b9817 (patch) | |
| tree | 3104979b668377da1499a3b4afc7ac29c557e3ce /Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp | |
| parent | 11976526d11f0475a3af126758260cdd69dd2a35 (diff) | |
Implement dual-source blending in shader
For some GLES drivers that don't support dual-source blending, but do
support GL_EXT_shader_framebuffer_fetch, this might be useful.
Diffstat (limited to 'Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp')
| -rw-r--r-- | Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp b/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp index a5133023af..54b5c87100 100644 --- a/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp +++ b/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp @@ -885,6 +885,24 @@ void ProgramShaderCache::CreateHeader() } } + std::string framebuffer_fetch_string; + switch (g_ogl_config.SupportedFramebufferFetch) + { + case ES_FB_FETCH_TYPE::FB_FETCH_EXT: + framebuffer_fetch_string = "#extension GL_EXT_shader_framebuffer_fetch: enable\n" + "#define FB_FETCH_VALUE ocol0\n" + "#define FRAGMENT_INOUT inout"; + break; + case ES_FB_FETCH_TYPE::FB_FETCH_ARM: + framebuffer_fetch_string = "#extension GL_ARM_shader_framebuffer_fetch: enable\n" + "#define FB_FETCH_VALUE gl_LastFragColorARM\n" + "#define FRAGMENT_INOUT out"; + break; + case ES_FB_FETCH_TYPE::FB_FETCH_NONE: + framebuffer_fetch_string = ""; + break; + } + s_glsl_header = StringFromFormat( "%s\n" "%s\n" // ubo @@ -902,6 +920,7 @@ void ProgramShaderCache::CreateHeader() "%s\n" // ES texture buffer "%s\n" // ES dual source blend "%s\n" // shader image load store + "%s\n" // shader framebuffer fetch // Precision defines for GLSL ES "%s\n" @@ -976,8 +995,8 @@ void ProgramShaderCache::CreateHeader() ((!is_glsles && v < GLSL_430) || (is_glsles && v < GLSLES_310)) ? "#extension GL_ARB_shader_image_load_store : enable" : "", - is_glsles ? "precision highp float;" : "", is_glsles ? "precision highp int;" : "", - is_glsles ? "precision highp sampler2DArray;" : "", + framebuffer_fetch_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;" : "", |