GLint GLAPIENTRY
_mesa_GetAttribLocation(GLuint program, const GLchar * name)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_shader_program *const shProg =
_mesa_lookup_shader_program_err(ctx, program, "glGetAttribLocation");
if (!shProg) {
return -1;
}
if (!shProg->LinkStatus) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetAttribLocation(program not linked)");
return -1;
}
if (!name)
return -1;
/* Not having a vertex shader is not an error.
*/
if (shProg->_LinkedShaders[MESA_SHADER_VERTEX] == NULL)
return -1;
unsigned array_index = 0;
struct gl_program_resource *res =
_mesa_program_resource_find_name(shProg, GL_PROGRAM_INPUT, name,
&array_index);
if (!res)
return -1;
return program_resource_location(res, array_index);
}
GLint GLAPIENTRY
_mesa_GetFragDataLocation(GLuint program, const GLchar *name)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_shader_program *const shProg =
_mesa_lookup_shader_program_err(ctx, program, "glGetFragDataLocation");
if (!shProg) {
return -1;
}
if (!shProg->LinkStatus) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetFragDataLocation(program not linked)");
return -1;
}
if (!name)
return -1;
if (strncmp(name, "gl_", 3) == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetFragDataLocation(illegal name)");
return -1;
}
/* Not having a fragment shader is not an error.
*/
if (shProg->_LinkedShaders[MESA_SHADER_FRAGMENT] == NULL)
return -1;
unsigned array_index = 0;
struct gl_program_resource *res =
_mesa_program_resource_find_name(shProg, GL_PROGRAM_OUTPUT, name,
&array_index);
if (!res)
return -1;
GLint loc = program_resource_location(shProg, res, name, array_index);
/* The extra check against against 0 is made because of builtin-attribute
* locations that have offset applied. Function program_resource_location
* can return built-in attribute locations < 0 and glGetFragDataLocation
* cannot be used on "conventional" attributes.
*
* From page 95 of the OpenGL 3.0 spec:
*
* "If name is not an active attribute, if name is a conventional
* attribute, or if an error occurs, -1 will be returned."
*/
return (loc >= 0) ? loc : -1;
}
/**
* Function implements following location queries:
* glGetAttribLocation
* glGetFragDataLocation
* glGetUniformLocation
*/
GLint
_mesa_program_resource_location(struct gl_shader_program *shProg,
GLenum programInterface, const char *name)
{
struct gl_program_resource *res =
_mesa_program_resource_find_name(shProg, programInterface, name);
/* Resource not found. */
if (!res)
return -1;
return program_resource_location(shProg, res, name);
}
/**
* Function implements following location queries:
* glGetUniformLocation
*/
GLint
_mesa_program_resource_location(struct gl_shader_program *shProg,
GLenum programInterface, const char *name)
{
unsigned array_index = 0;
struct gl_program_resource *res =
_mesa_program_resource_find_name(shProg, programInterface, name,
&array_index);
/* Resource not found. */
if (!res)
return -1;
return program_resource_location(res, array_index);
}
GLint GLAPIENTRY
_mesa_GetFragDataLocation(GLuint program, const GLchar *name)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_shader_program *const shProg =
_mesa_lookup_shader_program_err(ctx, program, "glGetFragDataLocation");
if (!shProg) {
return -1;
}
if (!shProg->LinkStatus) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetFragDataLocation(program not linked)");
return -1;
}
if (!name)
return -1;
if (strncmp(name, "gl_", 3) == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetFragDataLocation(illegal name)");
return -1;
}
/* Not having a fragment shader is not an error.
*/
if (shProg->_LinkedShaders[MESA_SHADER_FRAGMENT] == NULL)
return -1;
unsigned array_index = 0;
struct gl_program_resource *res =
_mesa_program_resource_find_name(shProg, GL_PROGRAM_OUTPUT, name,
&array_index);
if (!res)
return -1;
return program_resource_location(res, array_index);
}
unsigned
_mesa_program_resource_prop(struct gl_shader_program *shProg,
struct gl_program_resource *res, GLuint index,
const GLenum prop, GLint *val, const char *caller)
{
GET_CURRENT_CONTEXT(ctx);
#define VALIDATE_TYPE(type)\
if (res->Type != type)\
goto invalid_operation;
#define VALIDATE_TYPE_2(type1, type2)\
if (res->Type != type1 && res->Type != type2)\
goto invalid_operation;
switch(prop) {
case GL_NAME_LENGTH:
switch (res->Type) {
case GL_ATOMIC_COUNTER_BUFFER:
case GL_TRANSFORM_FEEDBACK_BUFFER:
goto invalid_operation;
default:
/* Resource name length + terminator. */
*val = _mesa_program_resource_name_len(res) + 1;
}
return 1;
case GL_TYPE:
switch (res->Type) {
case GL_UNIFORM:
case GL_BUFFER_VARIABLE:
*val = RESOURCE_UNI(res)->type->gl_type;
return 1;
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
*val = RESOURCE_VAR(res)->type->gl_type;
return 1;
case GL_TRANSFORM_FEEDBACK_VARYING:
*val = RESOURCE_XFV(res)->Type;
return 1;
default:
goto invalid_operation;
}
case GL_ARRAY_SIZE:
switch (res->Type) {
case GL_UNIFORM:
case GL_BUFFER_VARIABLE:
case GL_VERTEX_SUBROUTINE_UNIFORM:
case GL_GEOMETRY_SUBROUTINE_UNIFORM:
case GL_FRAGMENT_SUBROUTINE_UNIFORM:
case GL_COMPUTE_SUBROUTINE_UNIFORM:
case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
/* Test if a buffer variable is an array or an unsized array.
* Unsized arrays return zero as array size.
*/
if (RESOURCE_UNI(res)->is_shader_storage &&
RESOURCE_UNI(res)->array_stride > 0)
*val = RESOURCE_UNI(res)->array_elements;
else
*val = MAX2(RESOURCE_UNI(res)->array_elements, 1);
return 1;
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
*val = MAX2(_mesa_program_resource_array_size(res), 1);
return 1;
case GL_TRANSFORM_FEEDBACK_VARYING:
*val = RESOURCE_XFV(res)->Size;
return 1;
default:
goto invalid_operation;
}
case GL_OFFSET:
switch (res->Type) {
case GL_UNIFORM:
case GL_BUFFER_VARIABLE:
*val = RESOURCE_UNI(res)->offset;
return 1;
case GL_TRANSFORM_FEEDBACK_VARYING:
*val = RESOURCE_XFV(res)->Offset;
return 1;
default:
goto invalid_operation;
}
case GL_BLOCK_INDEX:
VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->block_index;
return 1;
case GL_ARRAY_STRIDE:
VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->array_stride;
return 1;
case GL_MATRIX_STRIDE:
VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->matrix_stride;
return 1;
case GL_IS_ROW_MAJOR:
VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->row_major;
return 1;
case GL_ATOMIC_COUNTER_BUFFER_INDEX:
VALIDATE_TYPE(GL_UNIFORM);
*val = RESOURCE_UNI(res)->atomic_buffer_index;
return 1;
case GL_BUFFER_BINDING:
case GL_BUFFER_DATA_SIZE:
case GL_NUM_ACTIVE_VARIABLES:
case GL_ACTIVE_VARIABLES:
return get_buffer_property(shProg, res, prop, val, caller);
case GL_REFERENCED_BY_COMPUTE_SHADER:
if (!_mesa_has_compute_shaders(ctx))
goto invalid_enum;
/* fallthrough */
case GL_REFERENCED_BY_VERTEX_SHADER:
case GL_REFERENCED_BY_TESS_CONTROL_SHADER:
case GL_REFERENCED_BY_TESS_EVALUATION_SHADER:
case GL_REFERENCED_BY_GEOMETRY_SHADER:
case GL_REFERENCED_BY_FRAGMENT_SHADER:
switch (res->Type) {
case GL_UNIFORM:
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
case GL_UNIFORM_BLOCK:
case GL_BUFFER_VARIABLE:
case GL_SHADER_STORAGE_BLOCK:
case GL_ATOMIC_COUNTER_BUFFER:
*val = is_resource_referenced(shProg, res, index,
stage_from_enum(prop));
return 1;
default:
goto invalid_operation;
}
case GL_LOCATION:
switch (res->Type) {
case GL_UNIFORM:
case GL_VERTEX_SUBROUTINE_UNIFORM:
case GL_GEOMETRY_SUBROUTINE_UNIFORM:
case GL_FRAGMENT_SUBROUTINE_UNIFORM:
case GL_COMPUTE_SUBROUTINE_UNIFORM:
case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
*val = program_resource_location(res, 0);
return 1;
default:
goto invalid_operation;
}
case GL_LOCATION_COMPONENT:
switch (res->Type) {
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
*val = RESOURCE_VAR(res)->component;
return 1;
default:
goto invalid_operation;
}
case GL_LOCATION_INDEX:
if (res->Type != GL_PROGRAM_OUTPUT)
goto invalid_operation;
*val = RESOURCE_VAR(res)->index;
return 1;
case GL_NUM_COMPATIBLE_SUBROUTINES:
if (res->Type != GL_VERTEX_SUBROUTINE_UNIFORM &&
res->Type != GL_FRAGMENT_SUBROUTINE_UNIFORM &&
res->Type != GL_GEOMETRY_SUBROUTINE_UNIFORM &&
res->Type != GL_COMPUTE_SUBROUTINE_UNIFORM &&
res->Type != GL_TESS_CONTROL_SUBROUTINE_UNIFORM &&
res->Type != GL_TESS_EVALUATION_SUBROUTINE_UNIFORM)
goto invalid_operation;
*val = RESOURCE_UNI(res)->num_compatible_subroutines;
return 1;
case GL_COMPATIBLE_SUBROUTINES: {
const struct gl_uniform_storage *uni;
struct gl_shader *sh;
unsigned count, i;
int j;
if (res->Type != GL_VERTEX_SUBROUTINE_UNIFORM &&
res->Type != GL_FRAGMENT_SUBROUTINE_UNIFORM &&
res->Type != GL_GEOMETRY_SUBROUTINE_UNIFORM &&
res->Type != GL_COMPUTE_SUBROUTINE_UNIFORM &&
res->Type != GL_TESS_CONTROL_SUBROUTINE_UNIFORM &&
res->Type != GL_TESS_EVALUATION_SUBROUTINE_UNIFORM)
goto invalid_operation;
uni = RESOURCE_UNI(res);
sh = shProg->_LinkedShaders[_mesa_shader_stage_from_subroutine_uniform(res->Type)];
count = 0;
for (i = 0; i < sh->NumSubroutineFunctions; i++) {
struct gl_subroutine_function *fn = &sh->SubroutineFunctions[i];
for (j = 0; j < fn->num_compat_types; j++) {
if (fn->types[j] == uni->type) {
val[count++] = i;
break;
}
}
}
return count;
}
case GL_TOP_LEVEL_ARRAY_SIZE:
VALIDATE_TYPE(GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->top_level_array_size;
return 1;
case GL_TOP_LEVEL_ARRAY_STRIDE:
VALIDATE_TYPE(GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->top_level_array_stride;
return 1;
/* GL_ARB_tessellation_shader */
case GL_IS_PER_PATCH:
switch (res->Type) {
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
*val = RESOURCE_VAR(res)->patch;
return 1;
default:
goto invalid_operation;
}
case GL_TRANSFORM_FEEDBACK_BUFFER_INDEX:
VALIDATE_TYPE(GL_TRANSFORM_FEEDBACK_VARYING);
*val = RESOURCE_XFV(res)->BufferIndex;
return 1;
case GL_TRANSFORM_FEEDBACK_BUFFER_STRIDE:
VALIDATE_TYPE(GL_TRANSFORM_FEEDBACK_BUFFER);
*val = RESOURCE_XFB(res)->Stride * 4;
return 1;
default:
goto invalid_enum;
}
#undef VALIDATE_TYPE
#undef VALIDATE_TYPE_2
invalid_enum:
_mesa_error(ctx, GL_INVALID_ENUM, "%s(%s prop %s)", caller,
_mesa_enum_to_string(res->Type),
_mesa_enum_to_string(prop));
return 0;
invalid_operation:
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(%s prop %s)", caller,
_mesa_enum_to_string(res->Type),
_mesa_enum_to_string(prop));
return 0;
}
unsigned
_mesa_program_resource_prop(struct gl_shader_program *shProg,
struct gl_program_resource *res, GLuint index,
const GLenum prop, GLint *val, const char *caller)
{
GET_CURRENT_CONTEXT(ctx);
#define VALIDATE_TYPE(type)\
if (res->Type != type)\
goto invalid_operation;
switch(prop) {
case GL_NAME_LENGTH:
if (res->Type == GL_ATOMIC_COUNTER_BUFFER)
goto invalid_operation;
/* Base name +3 if array '[0]' + terminator. */
*val = strlen(_mesa_program_resource_name(res)) +
(_mesa_program_resource_array_size(res) > 0 ? 3 : 0) + 1;
return 1;
case GL_TYPE:
switch (res->Type) {
case GL_UNIFORM:
*val = RESOURCE_UNI(res)->type->gl_type;
return 1;
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
*val = RESOURCE_VAR(res)->type->gl_type;
return 1;
case GL_TRANSFORM_FEEDBACK_VARYING:
*val = RESOURCE_XFB(res)->Type;
return 1;
default:
goto invalid_operation;
}
case GL_ARRAY_SIZE:
switch (res->Type) {
case GL_UNIFORM:
*val = MAX2(RESOURCE_UNI(res)->array_elements, 1);
return 1;
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
*val = MAX2(RESOURCE_VAR(res)->type->length, 1);
return 1;
case GL_TRANSFORM_FEEDBACK_VARYING:
*val = MAX2(RESOURCE_XFB(res)->Size, 1);
return 1;
default:
goto invalid_operation;
}
case GL_OFFSET:
VALIDATE_TYPE(GL_UNIFORM);
*val = RESOURCE_UNI(res)->offset;
return 1;
case GL_BLOCK_INDEX:
VALIDATE_TYPE(GL_UNIFORM);
*val = RESOURCE_UNI(res)->block_index;
return 1;
case GL_ARRAY_STRIDE:
VALIDATE_TYPE(GL_UNIFORM);
*val = RESOURCE_UNI(res)->array_stride;
return 1;
case GL_MATRIX_STRIDE:
VALIDATE_TYPE(GL_UNIFORM);
*val = RESOURCE_UNI(res)->matrix_stride;
return 1;
case GL_IS_ROW_MAJOR:
VALIDATE_TYPE(GL_UNIFORM);
*val = RESOURCE_UNI(res)->row_major;
return 1;
case GL_ATOMIC_COUNTER_BUFFER_INDEX:
VALIDATE_TYPE(GL_UNIFORM);
*val = RESOURCE_UNI(res)->atomic_buffer_index;
return 1;
case GL_BUFFER_BINDING:
case GL_BUFFER_DATA_SIZE:
case GL_NUM_ACTIVE_VARIABLES:
case GL_ACTIVE_VARIABLES:
return get_buffer_property(shProg, res, prop, val, caller);
case GL_REFERENCED_BY_COMPUTE_SHADER:
if (!_mesa_has_compute_shaders(ctx))
goto invalid_enum;
/* fallthrough */
case GL_REFERENCED_BY_VERTEX_SHADER:
case GL_REFERENCED_BY_GEOMETRY_SHADER:
case GL_REFERENCED_BY_FRAGMENT_SHADER:
switch (res->Type) {
case GL_UNIFORM:
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
case GL_UNIFORM_BLOCK:
case GL_ATOMIC_COUNTER_BUFFER:
*val = is_resource_referenced(shProg, res, index,
stage_from_enum(prop));
return 1;
default:
goto invalid_operation;
}
case GL_LOCATION:
switch (res->Type) {
case GL_UNIFORM:
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
*val = program_resource_location(shProg, res,
_mesa_program_resource_name(res));
return 1;
default:
goto invalid_operation;
}
case GL_LOCATION_INDEX:
if (res->Type != GL_PROGRAM_OUTPUT)
goto invalid_operation;
*val = RESOURCE_VAR(res)->data.index;
return 1;
/* GL_ARB_tessellation_shader */
case GL_IS_PER_PATCH:
case GL_REFERENCED_BY_TESS_CONTROL_SHADER:
case GL_REFERENCED_BY_TESS_EVALUATION_SHADER:
default:
goto invalid_enum;
}
#undef VALIDATE_TYPE
invalid_enum:
_mesa_error(ctx, GL_INVALID_ENUM, "%s(%s prop %s)", caller,
_mesa_lookup_enum_by_nr(res->Type),
_mesa_lookup_enum_by_nr(prop));
return 0;
invalid_operation:
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(%s prop %s)", caller,
_mesa_lookup_enum_by_nr(res->Type),
_mesa_lookup_enum_by_nr(prop));
return 0;
}
