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mesa/formatquery: Added texture gather/shadow related queries

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From the ARB_internalformat_query2 specification:

   "- TEXTURE_SHADOW: The support for using the resource with shadow samplers
      is written to <params>.

    - TEXTURE_GATHER: The support for using the resource with texture gather
      operations is written to <params>.

    - TEXTURE_GATHER_SHADOW: The support for using resource with texture gather
      operations with shadow samplers is written to <params>."

For all of them,

    "Possible values returned are FULL_SUPPORT, CAVEAT_SUPPORT, or NONE.
     If the resource or operation is not supported, NONE is returned."

Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Antia Puentes 2015-12-21 15:57:25 +01:00 • committed by Eduardo Lima Mitev
parent 557939c08f
commit b4ee9f56fd
1 changed files with 37 additions and 8 deletions
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45
src/mesa/main/formatquery.c
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@ -619,6 +619,9 @@ _mesa_query_internal_format_default(struct gl_context *ctx, GLenum target,
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
case GL_CLEAR_BUFFER:
case GL_TEXTURE_VIEW:
case GL_TEXTURE_SHADOW:
case GL_TEXTURE_GATHER:
case GL_TEXTURE_GATHER_SHADOW:
params[0] = GL_FULL_SUPPORT;
break;
@ -1189,16 +1192,42 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
buffer);
break;
case GL_TEXTURE_SHADOW:
/* @TODO */
break;
case GL_TEXTURE_GATHER:
/* @TODO */
break;
case GL_TEXTURE_GATHER_SHADOW:
/* @TODO */
if (!_mesa_has_ARB_texture_gather(ctx))
goto end;
/* fallthrough */
case GL_TEXTURE_SHADOW:
/* Only depth or depth-stencil image formats make sense in shadow
samplers */
if (pname != GL_TEXTURE_GATHER &&
!_mesa_is_depth_format(internalformat) &&
!_mesa_is_depthstencil_format(internalformat))
goto end;
/* Validate the target for shadow and gather operations */
switch (target) {
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_RECTANGLE:
break;
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
/* 1D and 1DArray textures are not admitted in gather operations */
if (pname != GL_TEXTURE_SHADOW)
goto end;
break;
default:
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SHADER_IMAGE_LOAD: