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mesa: Add support for glGetProgramiv pnames for UBOs. 

Fixes piglit ARB_uniform_buffer_object/getprogramiv.

v2: Add extension checks.
v3: Appease MSVC.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Eric Anholt 2012-06-14 08:57:04 -07:00
parent 3a90dc22d1
commit 4070036259
1 changed files with 29 additions and 0 deletions
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29
src/mesa/main/shaderapi.c
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@ -544,6 +544,35 @@ get_programiv(struct gl_context *ctx, GLuint program, GLenum pname, GLint *param
*params = shProg->Geom.OutputType;
break;
#endif
case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH: {
unsigned i;
GLint max_len = 0;
if (!ctx->Extensions.ARB_uniform_buffer_object) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramiv(pname)");
return;
}
for (i = 0; i < shProg->NumUniformBlocks; i++) {
/* Add one for the terminating NUL character.
*/
const GLint len = strlen(shProg->UniformBlocks[i].Name) + 1;
if (len > max_len)
max_len = len;
}
*params = max_len;
break;
}
case GL_ACTIVE_UNIFORM_BLOCKS:
if (!ctx->Extensions.ARB_uniform_buffer_object) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramiv(pname)");
return;
}
*params = shProg->NumUniformBlocks;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramiv(pname)");
return;