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OpenGL2: Switch to RGTC from LATC for normal maps.

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Also added a RGTC compressor as a workaround on Intel graphics.
This commit is contained in:
SmileTheory 2015-12-15 03:23:55 -08:00
parent c07cc282d0
commit cbfc3471bc
6 changed files with 181 additions and 115 deletions
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12
code/renderercommon/qgl.h
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@ -677,12 +677,12 @@ extern void (APIENTRY * qglRenderbufferStorageMultisampleEXT)(GLenum target, GLs
#define GL_FRAMEBUFFER_SRGB_EXT 0x8DB9
#endif
#ifndef GL_EXT_texture_compression_latc
#define GL_EXT_texture_compression_latc
#define GL_COMPRESSED_LUMINANCE_LATC1_EXT 0x8C70
#define GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT 0x8C71
#define GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT 0x8C72
#define GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT 0x8C73
#ifndef GL_ARB_texture_compression_rgtc
#define GL_ARB_texture_compression_rgtc
#define GL_COMPRESSED_RED_RGTC1 0x8DBB
#define GL_COMPRESSED_SIGNED_RED_RGTC1 0x8DBC
#define GL_COMPRESSED_RG_RGTC2 0x8DBD
#define GL_COMPRESSED_SIGNED_RG_RGTC2 0x8DBE
#endif
#ifndef GL_ARB_texture_compression_bptc