/**
* glGetProgramiv() - get shader program state.
* Note that this is for GLSL shader programs, not ARB vertex/fragment
* programs (see glGetProgramivARB).
*/
static void
get_programiv(struct gl_context *ctx, GLuint program, GLenum pname, GLint *params)
{
struct gl_shader_program *shProg
= _mesa_lookup_shader_program(ctx, program);
if (!shProg) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramiv(program)");
return;
}
switch (pname) {
case GL_DELETE_STATUS:
*params = shProg->DeletePending;
break;
case GL_LINK_STATUS:
*params = shProg->LinkStatus;
break;
case GL_VALIDATE_STATUS:
*params = shProg->Validated;
break;
case GL_INFO_LOG_LENGTH:
*params = shProg->InfoLog ? strlen(shProg->InfoLog) + 1 : 0;
break;
case GL_ATTACHED_SHADERS:
*params = shProg->NumShaders;
break;
case GL_ACTIVE_ATTRIBUTES:
*params = _mesa_count_active_attribs(shProg);
break;
case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH:
*params = _mesa_longest_attribute_name_length(shProg);
break;
case GL_ACTIVE_UNIFORMS:
*params = shProg->NumUserUniformStorage;
break;
case GL_ACTIVE_UNIFORM_MAX_LENGTH: {
unsigned i;
GLint max_len = 0;
for (i = 0; i < shProg->NumUserUniformStorage; i++) {
/* Add one for the terminating NUL character.
*/
const GLint len = strlen(shProg->UniformStorage[i].name) + 1;
if (len > max_len)
max_len = len;
}
*params = max_len;
break;
}
case GL_PROGRAM_BINARY_LENGTH_OES:
*params = 0;
break;
#if FEATURE_EXT_transform_feedback
case GL_TRANSFORM_FEEDBACK_VARYINGS:
*params = shProg->TransformFeedback.NumVarying;
break;
case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH:
*params = longest_feedback_varying_name(shProg) + 1;
break;
case GL_TRANSFORM_FEEDBACK_BUFFER_MODE:
*params = shProg->TransformFeedback.BufferMode;
break;
#endif
#if FEATURE_ARB_geometry_shader4
case GL_GEOMETRY_VERTICES_OUT_ARB:
*params = shProg->Geom.VerticesOut;
break;
case GL_GEOMETRY_INPUT_TYPE_ARB:
*params = shProg->Geom.InputType;
break;
case GL_GEOMETRY_OUTPUT_TYPE_ARB:
*params = shProg->Geom.OutputType;
break;
#endif
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramiv(pname)");
return;
}
}
/**
* glGetProgramiv() - get shader program state.
* Note that this is for GLSL shader programs, not ARB vertex/fragment
* programs (see glGetProgramivARB).
*/
static void
get_programiv(struct gl_context *ctx, GLuint program, GLenum pname, GLint *params)
{
struct gl_shader_program *shProg
= _mesa_lookup_shader_program(ctx, program);
/* Is transform feedback available in this context?
*/
const bool has_xfb =
(ctx->API == API_OPENGL && ctx->Extensions.EXT_transform_feedback)
|| ctx->API == API_OPENGL_CORE
|| _mesa_is_gles3(ctx);
/* Are geometry shaders available in this context?
*/
const bool has_gs =
_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_geometry_shader4;
/* Are uniform buffer objects available in this context?
*/
const bool has_ubo =
(ctx->API == API_OPENGL && ctx->Extensions.ARB_uniform_buffer_object)
|| ctx->API == API_OPENGL_CORE
|| _mesa_is_gles3(ctx);
if (!shProg) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramiv(program)");
return;
}
switch (pname) {
case GL_DELETE_STATUS:
*params = shProg->DeletePending;
return;
case GL_LINK_STATUS:
*params = shProg->LinkStatus;
return;
case GL_VALIDATE_STATUS:
*params = shProg->Validated;
return;
case GL_INFO_LOG_LENGTH:
*params = shProg->InfoLog ? strlen(shProg->InfoLog) + 1 : 0;
return;
case GL_ATTACHED_SHADERS:
*params = shProg->NumShaders;
return;
case GL_ACTIVE_ATTRIBUTES:
*params = _mesa_count_active_attribs(shProg);
return;
case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH:
*params = _mesa_longest_attribute_name_length(shProg);
return;
case GL_ACTIVE_UNIFORMS:
*params = shProg->NumUserUniformStorage;
return;
case GL_ACTIVE_UNIFORM_MAX_LENGTH: {
unsigned i;
GLint max_len = 0;
for (i = 0; i < shProg->NumUserUniformStorage; i++) {
/* Add one for the terminating NUL character.
*/
const GLint len = strlen(shProg->UniformStorage[i].name) + 1;
if (len > max_len)
max_len = len;
}
*params = max_len;
return;
}
case GL_TRANSFORM_FEEDBACK_VARYINGS:
if (!has_xfb)
break;
*params = shProg->TransformFeedback.NumVarying;
return;
case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH:
if (!has_xfb)
break;
*params = longest_feedback_varying_name(shProg) + 1;
return;
case GL_TRANSFORM_FEEDBACK_BUFFER_MODE:
if (!has_xfb)
break;
*params = shProg->TransformFeedback.BufferMode;
return;
case GL_GEOMETRY_VERTICES_OUT_ARB:
if (!has_gs)
break;
*params = shProg->Geom.VerticesOut;
return;
case GL_GEOMETRY_INPUT_TYPE_ARB:
if (!has_gs)
break;
*params = shProg->Geom.InputType;
return;
case GL_GEOMETRY_OUTPUT_TYPE_ARB:
if (!has_gs)
break;
*params = shProg->Geom.OutputType;
return;
case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH: {
unsigned i;
GLint max_len = 0;
if (!has_ubo)
break;
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;
return;
}
case GL_ACTIVE_UNIFORM_BLOCKS:
if (!has_ubo)
break;
*params = shProg->NumUniformBlocks;
return;
default:
break;
}
_mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramiv(pname=%s)",
_mesa_lookup_enum_by_nr(pname));
}
