/**
* Calculate index for the given resource.
*/
GLuint
_mesa_program_resource_index(struct gl_shader_program *shProg,
struct gl_program_resource *res)
{
if (!res)
return GL_INVALID_INDEX;
switch (res->Type) {
case GL_ATOMIC_COUNTER_BUFFER:
return RESOURCE_ATC(res) - shProg->AtomicBuffers;
case GL_VERTEX_SUBROUTINE:
case GL_GEOMETRY_SUBROUTINE:
case GL_FRAGMENT_SUBROUTINE:
case GL_COMPUTE_SUBROUTINE:
case GL_TESS_CONTROL_SUBROUTINE:
case GL_TESS_EVALUATION_SUBROUTINE:
return RESOURCE_SUB(res)->index;
case GL_UNIFORM_BLOCK:
case GL_SHADER_STORAGE_BLOCK:
case GL_TRANSFORM_FEEDBACK_BUFFER:
case GL_TRANSFORM_FEEDBACK_VARYING:
default:
return calc_resource_index(shProg, res);
}
}
/**
* Check if resource is referenced by given 'referenced by' stage enum.
* ATC and UBO resources hold stage references of their own.
*/
static bool
is_resource_referenced(struct gl_shader_program *shProg,
struct gl_program_resource *res,
GLuint index, uint8_t stage)
{
/* First, check if we even have such a stage active. */
if (!shProg->_LinkedShaders[stage])
return false;
if (res->Type == GL_ATOMIC_COUNTER_BUFFER)
return RESOURCE_ATC(res)->StageReferences[stage];
if (res->Type == GL_UNIFORM_BLOCK || res->Type == GL_SHADER_STORAGE_BLOCK)
return shProg->UniformBlockStageIndex[stage][index] != -1;
return res->StageReferences & (1 << stage);
}
/**
* Calculate index for the given resource.
*/
GLuint
_mesa_program_resource_index(struct gl_shader_program *shProg,
struct gl_program_resource *res)
{
if (!res)
return GL_INVALID_INDEX;
switch (res->Type) {
case GL_ATOMIC_COUNTER_BUFFER:
return RESOURCE_ATC(res) - shProg->AtomicBuffers;
case GL_UNIFORM_BLOCK:
case GL_SHADER_STORAGE_BLOCK:
case GL_TRANSFORM_FEEDBACK_VARYING:
default:
return calc_resource_index(shProg, res);
}
}
static unsigned
get_buffer_property(struct gl_shader_program *shProg,
struct gl_program_resource *res, const GLenum prop,
GLint *val, const char *caller)
{
GET_CURRENT_CONTEXT(ctx);
if (res->Type != GL_UNIFORM_BLOCK &&
res->Type != GL_ATOMIC_COUNTER_BUFFER &&
res->Type != GL_SHADER_STORAGE_BLOCK &&
res->Type != GL_TRANSFORM_FEEDBACK_BUFFER)
goto invalid_operation;
if (res->Type == GL_UNIFORM_BLOCK) {
switch (prop) {
case GL_BUFFER_BINDING:
*val = RESOURCE_UBO(res)->Binding;
return 1;
case GL_BUFFER_DATA_SIZE:
*val = RESOURCE_UBO(res)->UniformBufferSize;
return 1;
case GL_NUM_ACTIVE_VARIABLES:
*val = 0;
for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
struct gl_program_resource *uni =
_mesa_program_resource_find_name(shProg, GL_UNIFORM, iname,
NULL);
if (!uni)
continue;
(*val)++;
}
return 1;
case GL_ACTIVE_VARIABLES: {
unsigned num_values = 0;
for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
struct gl_program_resource *uni =
_mesa_program_resource_find_name(shProg, GL_UNIFORM, iname,
NULL);
if (!uni)
continue;
*val++ =
_mesa_program_resource_index(shProg, uni);
num_values++;
}
return num_values;
}
}
} else if (res->Type == GL_SHADER_STORAGE_BLOCK) {
switch (prop) {
case GL_BUFFER_BINDING:
*val = RESOURCE_UBO(res)->Binding;
return 1;
case GL_BUFFER_DATA_SIZE:
*val = RESOURCE_UBO(res)->UniformBufferSize;
return 1;
case GL_NUM_ACTIVE_VARIABLES:
*val = 0;
for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
struct gl_program_resource *uni =
_mesa_program_resource_find_name(shProg, GL_BUFFER_VARIABLE,
iname, NULL);
if (!uni)
continue;
(*val)++;
}
return 1;
case GL_ACTIVE_VARIABLES: {
unsigned num_values = 0;
for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
struct gl_program_resource *uni =
_mesa_program_resource_find_name(shProg, GL_BUFFER_VARIABLE,
iname, NULL);
if (!uni)
continue;
*val++ =
_mesa_program_resource_index(shProg, uni);
num_values++;
}
return num_values;
}
}
} else if (res->Type == GL_ATOMIC_COUNTER_BUFFER) {
switch (prop) {
case GL_BUFFER_BINDING:
*val = RESOURCE_ATC(res)->Binding;
return 1;
case GL_BUFFER_DATA_SIZE:
*val = RESOURCE_ATC(res)->MinimumSize;
return 1;
case GL_NUM_ACTIVE_VARIABLES:
*val = RESOURCE_ATC(res)->NumUniforms;
return 1;
case GL_ACTIVE_VARIABLES:
for (unsigned i = 0; i < RESOURCE_ATC(res)->NumUniforms; i++) {
/* Active atomic buffer contains index to UniformStorage. Find
* out gl_program_resource via data pointer and then calculate
* index of that uniform.
*/
unsigned idx = RESOURCE_ATC(res)->Uniforms[i];
struct gl_program_resource *uni =
program_resource_find_data(shProg,
&shProg->UniformStorage[idx]);
assert(uni);
*val++ = _mesa_program_resource_index(shProg, uni);
}
return RESOURCE_ATC(res)->NumUniforms;
}
} else if (res->Type == GL_TRANSFORM_FEEDBACK_BUFFER) {
switch (prop) {
case GL_BUFFER_BINDING:
*val = RESOURCE_XFB(res)->Binding;
return 1;
case GL_NUM_ACTIVE_VARIABLES:
*val = RESOURCE_XFB(res)->NumVaryings;
return 1;
case GL_ACTIVE_VARIABLES:
int i = 0;
for ( ; i < shProg->LinkedTransformFeedback.NumVarying; i++) {
unsigned index =
shProg->LinkedTransformFeedback.Varyings[i].BufferIndex;
struct gl_program_resource *buf_res =
_mesa_program_resource_find_index(shProg,
GL_TRANSFORM_FEEDBACK_BUFFER,
index);
assert(buf_res);
if (res == buf_res) {
*val++ = i;
}
}
return RESOURCE_XFB(res)->NumVaryings;
}
}
assert(!"support for property type not implemented");
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;
}
static unsigned
get_buffer_property(struct gl_shader_program *shProg,
struct gl_program_resource *res, const GLenum prop,
GLint *val, const char *caller)
{
GET_CURRENT_CONTEXT(ctx);
if (res->Type != GL_UNIFORM_BLOCK &&
res->Type != GL_ATOMIC_COUNTER_BUFFER &&
res->Type != GL_SHADER_STORAGE_BLOCK)
goto invalid_operation;
if (res->Type == GL_UNIFORM_BLOCK) {
switch (prop) {
case GL_BUFFER_BINDING:
*val = RESOURCE_UBO(res)->Binding;
return 1;
case GL_BUFFER_DATA_SIZE:
*val = RESOURCE_UBO(res)->UniformBufferSize;
return 1;
case GL_NUM_ACTIVE_VARIABLES:
*val = 0;
for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
struct gl_program_resource *uni =
_mesa_program_resource_find_name(shProg, GL_UNIFORM, iname,
NULL);
if (!uni)
continue;
(*val)++;
}
return 1;
case GL_ACTIVE_VARIABLES: {
unsigned num_values = 0;
for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
struct gl_program_resource *uni =
_mesa_program_resource_find_name(shProg, GL_UNIFORM, iname,
NULL);
if (!uni)
continue;
*val++ =
_mesa_program_resource_index(shProg, uni);
num_values++;
}
return num_values;
}
}
} else if (res->Type == GL_SHADER_STORAGE_BLOCK) {
switch (prop) {
case GL_BUFFER_BINDING:
*val = RESOURCE_UBO(res)->Binding;
return 1;
case GL_BUFFER_DATA_SIZE:
*val = RESOURCE_UBO(res)->UniformBufferSize;
return 1;
case GL_NUM_ACTIVE_VARIABLES:
*val = 0;
for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
struct gl_program_resource *uni =
_mesa_program_resource_find_name(shProg, GL_BUFFER_VARIABLE,
iname, NULL);
if (!uni)
continue;
(*val)++;
}
return 1;
case GL_ACTIVE_VARIABLES: {
unsigned num_values = 0;
for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
struct gl_program_resource *uni =
_mesa_program_resource_find_name(shProg, GL_BUFFER_VARIABLE,
iname, NULL);
if (!uni)
continue;
*val++ =
_mesa_program_resource_index(shProg, uni);
num_values++;
}
return num_values;
}
}
} else if (res->Type == GL_ATOMIC_COUNTER_BUFFER) {
switch (prop) {
case GL_BUFFER_BINDING:
*val = RESOURCE_ATC(res)->Binding;
return 1;
case GL_BUFFER_DATA_SIZE:
*val = RESOURCE_ATC(res)->MinimumSize;
return 1;
case GL_NUM_ACTIVE_VARIABLES:
*val = RESOURCE_ATC(res)->NumUniforms;
return 1;
case GL_ACTIVE_VARIABLES:
for (unsigned i = 0; i < RESOURCE_ATC(res)->NumUniforms; i++)
*val++ = RESOURCE_ATC(res)->Uniforms[i];
return RESOURCE_ATC(res)->NumUniforms;
}
}
assert(!"support for property type not implemented");
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;
}
