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mesa: ARB_texture_view get parameters

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Add support for ARB_texture_view get parameters:
GL_TEXTURE_VIEW_MIN_LEVEL
GL_TEXTURE_VIEW_NUM_LEVELS
GL_TEXTURE_VIEW_MIN_LAYER
GL_TEXTURE_VIEW_NUM_LAYERS

Incorporate feedback regarding when to allow query of
GL_TEXTURE_IMMUTABLE_LEVELS.

Signed-off-by: Courtney Goeltzenleuchter <courtney@LunarG.com>

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Courtney Goeltzenleuchter 2013-11-04 13:29:48 -07:00 • committed by Brian Paul
parent 668f3614ca
commit f1563e6392
1 changed files with 56 additions and 4 deletions
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60
src/mesa/main/texparam.c
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@ -1558,9 +1558,35 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
break;
case GL_TEXTURE_IMMUTABLE_LEVELS:
if (!_mesa_is_gles3(ctx))
goto invalid_pname;
if (_mesa_is_gles3(ctx) ||
(_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
*params = (GLfloat) obj->ImmutableLevels;
else
goto invalid_pname;
break;
case GL_TEXTURE_VIEW_MIN_LEVEL:
if (!ctx->Extensions.ARB_texture_view)
goto invalid_pname;
*params = (GLfloat) obj->MinLevel;
break;
case GL_TEXTURE_VIEW_NUM_LEVELS:
if (!ctx->Extensions.ARB_texture_view)
goto invalid_pname;
*params = (GLfloat) obj->NumLevels;
break;
case GL_TEXTURE_VIEW_MIN_LAYER:
if (!ctx->Extensions.ARB_texture_view)
goto invalid_pname;
*params = (GLfloat) obj->MinLayer;
break;
case GL_TEXTURE_VIEW_NUM_LAYERS:
if (!ctx->Extensions.ARB_texture_view)
goto invalid_pname;
*params = (GLfloat) obj->NumLayers;
break;
case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
@ -1742,9 +1768,35 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
break;
case GL_TEXTURE_IMMUTABLE_LEVELS:
if (!_mesa_is_gles3(ctx))
goto invalid_pname;
if (_mesa_is_gles3(ctx) ||
(_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
*params = obj->ImmutableLevels;
else
goto invalid_pname;
break;
case GL_TEXTURE_VIEW_MIN_LEVEL:
if (!ctx->Extensions.ARB_texture_view)
goto invalid_pname;
*params = (GLint) obj->MinLevel;
break;
case GL_TEXTURE_VIEW_NUM_LEVELS:
if (!ctx->Extensions.ARB_texture_view)
goto invalid_pname;
*params = (GLint) obj->NumLevels;
break;
case GL_TEXTURE_VIEW_MIN_LAYER:
if (!ctx->Extensions.ARB_texture_view)
goto invalid_pname;
*params = (GLint) obj->MinLayer;
break;
case GL_TEXTURE_VIEW_NUM_LAYERS:
if (!ctx->Extensions.ARB_texture_view)
goto invalid_pname;
*params = (GLint) obj->NumLayers;
break;
case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES: