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mesa: initial EXT_texture_snorm support

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The component ordering of some formats has been been reversed to match
Gallium types.
This commit is contained in:
Marek Olšák
2011-03-18 13:44:51 +01:00
parent 47e3896dfd
commit 0be369975f
10 changed files with 233 additions and 37 deletions
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38
src/mesa/main/fbobject.c
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@@ -1081,7 +1081,6 @@ _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
case GL_RGBA16_SNORM:
case GL_SRGB8_ALPHA8_EXT:
return GL_RGBA;
case GL_STENCIL_INDEX:
@@ -1109,6 +1108,43 @@ _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
case GL_RG8:
case GL_RG16:
return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
/* signed normalized texture formats */
case GL_RED_SNORM:
case GL_R8_SNORM:
case GL_R16_SNORM:
return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
case GL_RG_SNORM:
case GL_RG8_SNORM:
case GL_RG16_SNORM:
return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
case GL_RGB_SNORM:
case GL_RGB8_SNORM:
case GL_RGB16_SNORM:
return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
case GL_RGBA_SNORM:
case GL_RGBA8_SNORM:
case GL_RGBA16_SNORM:
return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
case GL_ALPHA_SNORM:
case GL_ALPHA8_SNORM:
case GL_ALPHA16_SNORM:
return ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
case GL_LUMINANCE_SNORM:
case GL_LUMINANCE8_SNORM:
case GL_LUMINANCE16_SNORM:
return ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
case GL_LUMINANCE_ALPHA_SNORM:
case GL_LUMINANCE8_ALPHA8_SNORM:
case GL_LUMINANCE16_ALPHA16_SNORM:
return ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
case GL_INTENSITY_SNORM:
case GL_INTENSITY8_SNORM:
case GL_INTENSITY16_SNORM:
return ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
/* XXX add floating point and integer formats eventually */
default:
return 0;