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[GLES] Support texture_buffer for palette texture conversion.

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OpenGL ES 3.2 adds this feature to core
It was available to GLES 3.1 as GL_{EXT, OES}_texture_buffer as well.
For the non-Nvidia vendors that implemented this is:
      - Qualcomm's Adreno 4xx
      - IMGTec's PowerVR Rogue
This commit is contained in:
Ryan Houdek
2015-09-01 05:23:43 -05:00
parent b9ea9c05ad
commit 7a35f9285b
4 changed files with 53 additions and 14 deletions
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19
Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp
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@ -524,6 +524,7 @@ void ProgramShaderCache::CreateHeader()
GLSL_VERSION v = g_ogl_config.eSupportedGLSLVersion;
bool is_glsles = v >= GLSLES_300;
std::string SupportedESPointSize;
std::string SupportedESTextureBuffer;
switch (g_ogl_config.SupportedESPointSize)
{
case 1: SupportedESPointSize = "#extension GL_OES_geometry_point_size : enable"; break;
@ -531,6 +532,20 @@ void ProgramShaderCache::CreateHeader()
default: SupportedESPointSize = ""; break;
}
switch (g_ogl_config.SupportedESTextureBuffer)
{
case ES_TEXBUF_TYPE::TEXBUF_EXT:
SupportedESTextureBuffer = "#extension GL_EXT_texture_buffer : enable";
break;
case ES_TEXBUF_TYPE::TEXBUF_OES:
SupportedESTextureBuffer = "#extension GL_OES_texture_buffer : enable";
break;
case ES_TEXBUF_TYPE::TEXBUF_CORE:
case ES_TEXBUF_TYPE::TEXBUF_NONE:
SupportedESTextureBuffer = "";
break;
}
snprintf(s_glsl_header, sizeof(s_glsl_header),
"%s\n"
"%s\n" // ubo
@ -544,11 +559,13 @@ void ProgramShaderCache::CreateHeader()
"%s\n" // Geometry point size
"%s\n" // AEP
"%s\n" // texture buffer
"%s\n" // ES texture buffer
// Precision defines for GLSL ES
"%s\n"
"%s\n"
"%s\n"
"%s\n"
// Silly differences
"#define float2 vec2\n"
@ -581,10 +598,12 @@ void ProgramShaderCache::CreateHeader()
, SupportedESPointSize.c_str()
, g_ogl_config.bSupportsAEP ? "#extension GL_ANDROID_extension_pack_es31a : enable" : ""
, v<GLSL_140 && g_ActiveConfig.backend_info.bSupportsPaletteConversion ? "#extension GL_ARB_texture_buffer_object : enable" : ""
, SupportedESTextureBuffer.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;" : ""
, DriverDetails::HasBug(DriverDetails::BUG_BROKENTEXTURESIZE) ? "#define textureSize(x, y) ivec2(1, 1)" : ""
, DriverDetails::HasBug(DriverDetails::BUG_BROKENCENTROID) ? "#define centroid" : ""