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i965/fs_surface_builder: Add a helper for converting GL to ISL formats

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Reviewed-by: Chad Versace <chad.versace@intel.com>
This commit is contained in:
Jason Ekstrand 2016-04-15 16:38:18 -07:00
parent 24bb75049b
commit 1831fa104c
1 changed files with 55 additions and 0 deletions
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55
src/mesa/drivers/dri/i965/brw_fs_surface_builder.cpp
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@ -21,6 +21,7 @@
* IN THE SOFTWARE.
*/
#include "isl/isl.h"
#include "main/shaderimage.h"
#include "brw_fs_surface_builder.h"
#include "brw_fs.h"
@ -165,6 +166,60 @@ namespace brw {
namespace {
namespace image_format_info {
/* The higher compiler layers use the GL enums for image formats even if
* they come in from SPIR-V or Vulkan. We need to turn them into an ISL
* enum before we can use them.
*/
enum isl_format
isl_format_for_gl_format(uint32_t gl_format)
{
switch (gl_format) {
case GL_R8: return ISL_FORMAT_R8_UNORM;
case GL_R8_SNORM: return ISL_FORMAT_R8_SNORM;
case GL_R8UI: return ISL_FORMAT_R8_UINT;
case GL_R8I: return ISL_FORMAT_R8_SINT;
case GL_RG8: return ISL_FORMAT_R8G8_UNORM;
case GL_RG8_SNORM: return ISL_FORMAT_R8G8_SNORM;
case GL_RG8UI: return ISL_FORMAT_R8G8_UINT;
case GL_RG8I: return ISL_FORMAT_R8G8_SINT;
case GL_RGBA8: return ISL_FORMAT_R8G8B8A8_UNORM;
case GL_RGBA8_SNORM: return ISL_FORMAT_R8G8B8A8_SNORM;
case GL_RGBA8UI: return ISL_FORMAT_R8G8B8A8_UINT;
case GL_RGBA8I: return ISL_FORMAT_R8G8B8A8_SINT;
case GL_R11F_G11F_B10F: return ISL_FORMAT_R11G11B10_FLOAT;
case GL_RGB10_A2: return ISL_FORMAT_R10G10B10A2_UNORM;
case GL_RGB10_A2UI: return ISL_FORMAT_R10G10B10A2_UINT;
case GL_R16: return ISL_FORMAT_R16_UNORM;
case GL_R16_SNORM: return ISL_FORMAT_R16_SNORM;
case GL_R16F: return ISL_FORMAT_R16_FLOAT;
case GL_R16UI: return ISL_FORMAT_R16_UINT;
case GL_R16I: return ISL_FORMAT_R16_SINT;
case GL_RG16: return ISL_FORMAT_R16G16_UNORM;
case GL_RG16_SNORM: return ISL_FORMAT_R16G16_SNORM;
case GL_RG16F: return ISL_FORMAT_R16G16_FLOAT;
case GL_RG16UI: return ISL_FORMAT_R16G16_UINT;
case GL_RG16I: return ISL_FORMAT_R16G16_SINT;
case GL_RGBA16: return ISL_FORMAT_R16G16B16A16_UNORM;
case GL_RGBA16_SNORM: return ISL_FORMAT_R16G16B16A16_SNORM;
case GL_RGBA16F: return ISL_FORMAT_R16G16B16A16_FLOAT;
case GL_RGBA16UI: return ISL_FORMAT_R16G16B16A16_UINT;
case GL_RGBA16I: return ISL_FORMAT_R16G16B16A16_SINT;
case GL_R32F: return ISL_FORMAT_R32_FLOAT;
case GL_R32UI: return ISL_FORMAT_R32_UINT;
case GL_R32I: return ISL_FORMAT_R32_SINT;
case GL_RG32F: return ISL_FORMAT_R32G32_FLOAT;
case GL_RG32UI: return ISL_FORMAT_R32G32_UINT;
case GL_RG32I: return ISL_FORMAT_R32G32_SINT;
case GL_RGBA32F: return ISL_FORMAT_R32G32B32A32_FLOAT;
case GL_RGBA32UI: return ISL_FORMAT_R32G32B32A32_UINT;
case GL_RGBA32I: return ISL_FORMAT_R32G32B32A32_SINT;
case GL_NONE: return ISL_FORMAT_UNSUPPORTED;
default:
assert(!"Invalid image format");
return ISL_FORMAT_UNSUPPORTED;
}
}
/**
* Simple 4-tuple of scalars used to pass around per-color component
* values.