blob: 047d21a85cf45f43c917352392e477b1c300a4e4 [file] [log] [blame]
/*
* Mesa 3-D graphics library
*
* Copyright (C) 2004-2008 Brian Paul All Rights Reserved.
* Copyright (C) 2009-2010 VMware, Inc. All Rights Reserved.
* Copyright © 2010, 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdlib.h>
#include "main/core.h"
#include "main/context.h"
#include "main/shaderapi.h"
#include "main/shaderobj.h"
#include "main/uniforms.h"
#include "compiler/glsl/ir.h"
#include "compiler/glsl/ir_uniform.h"
#include "compiler/glsl/glsl_parser_extras.h"
#include "compiler/glsl/program.h"
#include "util/bitscan.h"
extern "C" void GLAPIENTRY
_mesa_GetActiveUniform(GLuint program, GLuint index,
GLsizei maxLength, GLsizei *length, GLint *size,
GLenum *type, GLcharARB *nameOut)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_shader_program *shProg;
struct gl_program_resource *res;
if (maxLength < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGetActiveUniform(maxLength < 0)");
return;
}
shProg = _mesa_lookup_shader_program_err(ctx, program, "glGetActiveUniform");
if (!shProg)
return;
res = _mesa_program_resource_find_index((struct gl_shader_program *) shProg,
GL_UNIFORM, index);
if (!res) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGetActiveUniform(index)");
return;
}
if (nameOut)
_mesa_get_program_resource_name(shProg, GL_UNIFORM, index, maxLength,
length, nameOut, "glGetActiveUniform");
if (type)
_mesa_program_resource_prop((struct gl_shader_program *) shProg,
res, index, GL_TYPE, (GLint*) type,
"glGetActiveUniform");
if (size)
_mesa_program_resource_prop((struct gl_shader_program *) shProg,
res, index, GL_ARRAY_SIZE, (GLint*) size,
"glGetActiveUniform");
}
static GLenum
resource_prop_from_uniform_prop(GLenum uni_prop)
{
switch (uni_prop) {
case GL_UNIFORM_TYPE:
return GL_TYPE;
case GL_UNIFORM_SIZE:
return GL_ARRAY_SIZE;
case GL_UNIFORM_NAME_LENGTH:
return GL_NAME_LENGTH;
case GL_UNIFORM_BLOCK_INDEX:
return GL_BLOCK_INDEX;
case GL_UNIFORM_OFFSET:
return GL_OFFSET;
case GL_UNIFORM_ARRAY_STRIDE:
return GL_ARRAY_STRIDE;
case GL_UNIFORM_MATRIX_STRIDE:
return GL_MATRIX_STRIDE;
case GL_UNIFORM_IS_ROW_MAJOR:
return GL_IS_ROW_MAJOR;
case GL_UNIFORM_ATOMIC_COUNTER_BUFFER_INDEX:
return GL_ATOMIC_COUNTER_BUFFER_INDEX;
default:
return 0;
}
}
extern "C" void GLAPIENTRY
_mesa_GetActiveUniformsiv(GLuint program,
GLsizei uniformCount,
const GLuint *uniformIndices,
GLenum pname,
GLint *params)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_shader_program *shProg;
struct gl_program_resource *res;
GLenum res_prop;
if (uniformCount < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glGetActiveUniformsiv(uniformCount < 0)");
return;
}
shProg = _mesa_lookup_shader_program_err(ctx, program, "glGetActiveUniform");
if (!shProg)
return;
res_prop = resource_prop_from_uniform_prop(pname);
/* We need to first verify that each entry exists as active uniform. If
* not, generate error and do not cause any other side effects.
*
* In the case of and error condition, Page 16 (section 2.3.1 Errors)
* of the OpenGL 4.5 spec says:
*
* "If the generating command modifies values through a pointer argu-
* ment, no change is made to these values."
*/
for (int i = 0; i < uniformCount; i++) {
if (!_mesa_program_resource_find_index(shProg, GL_UNIFORM,
uniformIndices[i])) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGetActiveUniformsiv(index)");
return;
}
}
for (int i = 0; i < uniformCount; i++) {
res = _mesa_program_resource_find_index(shProg, GL_UNIFORM,
uniformIndices[i]);
if (!_mesa_program_resource_prop(shProg, res, uniformIndices[i],
res_prop, &params[i],
"glGetActiveUniformsiv"))
break;
}
}
static struct gl_uniform_storage *
validate_uniform_parameters(struct gl_context *ctx,
struct gl_shader_program *shProg,
GLint location, GLsizei count,
unsigned *array_index,
const char *caller)
{
if (shProg == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(program not linked)", caller);
return NULL;
}
/* From page 12 (page 26 of the PDF) of the OpenGL 2.1 spec:
*
* "If a negative number is provided where an argument of type sizei or
* sizeiptr is specified, the error INVALID_VALUE is generated."
*/
if (count < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(count < 0)", caller);
return NULL;
}
/* Check that the given location is in bounds of uniform remap table.
* Unlinked programs will have NumUniformRemapTable == 0, so we can take
* the shProg->data->LinkStatus check out of the main path.
*/
if (unlikely(location >= (GLint) shProg->NumUniformRemapTable)) {
if (!shProg->data->LinkStatus)
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(program not linked)",
caller);
else
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(location=%d)",
caller, location);
return NULL;
}
if (location == -1) {
if (!shProg->data->LinkStatus)
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(program not linked)",
caller);
return NULL;
}
/* Page 82 (page 96 of the PDF) of the OpenGL 2.1 spec says:
*
* "If any of the following conditions occur, an INVALID_OPERATION
* error is generated by the Uniform* commands, and no uniform values
* are changed:
*
* ...
*
* - if no variable with a location of location exists in the
* program object currently in use and location is not -1,
* - if count is greater than one, and the uniform declared in the
* shader is not an array variable,
*/
if (location < -1 || !shProg->UniformRemapTable[location]) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(location=%d)",
caller, location);
return NULL;
}
/* If the driver storage pointer in remap table is -1, we ignore silently.
*
* GL_ARB_explicit_uniform_location spec says:
* "What happens if Uniform* is called with an explicitly defined
* uniform location, but that uniform is deemed inactive by the
* linker?
*
* RESOLVED: The call is ignored for inactive uniform variables and
* no error is generated."
*
*/
if (shProg->UniformRemapTable[location] ==
INACTIVE_UNIFORM_EXPLICIT_LOCATION)
return NULL;
struct gl_uniform_storage *const uni = shProg->UniformRemapTable[location];
/* Even though no location is assigned to a built-in uniform and this
* function should already have returned NULL, this test makes it explicit
* that we are not allowing to update the value of a built-in.
*/
if (uni->builtin)
return NULL;
if (uni->array_elements == 0) {
if (count > 1) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(count = %u for non-array \"%s\"@%d)",
caller, count, uni->name, location);
return NULL;
}
assert((location - uni->remap_location) == 0);
*array_index = 0;
} else {
/* The array index specified by the uniform location is just the uniform
* location minus the base location of of the uniform.
*/
*array_index = location - uni->remap_location;
/* If the uniform is an array, check that array_index is in bounds.
* array_index is unsigned so no need to check for less than zero.
*/
if (*array_index >= uni->array_elements) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(location=%d)",
caller, location);
return NULL;
}
}
return uni;
}
/**
* Called via glGetUniform[fiui]v() to get the current value of a uniform.
*/
extern "C" void
_mesa_get_uniform(struct gl_context *ctx, GLuint program, GLint location,
GLsizei bufSize, enum glsl_base_type returnType,
GLvoid *paramsOut)
{
struct gl_shader_program *shProg =
_mesa_lookup_shader_program_err(ctx, program, "glGetUniformfv");
unsigned offset;
struct gl_uniform_storage *const uni =
validate_uniform_parameters(ctx, shProg, location, 1,
&offset, "glGetUniform");
if (uni == NULL) {
/* For glGetUniform, page 264 (page 278 of the PDF) of the OpenGL 2.1
* spec says:
*
* "The error INVALID_OPERATION is generated if program has not been
* linked successfully, or if location is not a valid location for
* program."
*
* For glUniform, page 82 (page 96 of the PDF) of the OpenGL 2.1 spec
* says:
*
* "If the value of location is -1, the Uniform* commands will
* silently ignore the data passed in, and the current uniform
* values will not be changed."
*
* Allowing -1 for the location parameter of glUniform allows
* applications to avoid error paths in the case that, for example, some
* uniform variable is removed by the compiler / linker after
* optimization. In this case, the new value of the uniform is dropped
* on the floor. For the case of glGetUniform, there is nothing
* sensible to do for a location of -1.
*
* If the location was -1, validate_unfirom_parameters will return NULL
* without raising an error. Raise the error here.
*/
if (location == -1) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetUniform(location=%d)",
location);
}
return;
}
{
unsigned elements = (uni->type->is_sampler())
? 1 : uni->type->components();
const int dmul = uni->type->is_64bit() ? 2 : 1;
const int rmul = glsl_base_type_is_64bit(returnType) ? 2 : 1;
/* Calculate the source base address *BEFORE* modifying elements to
* account for the size of the user's buffer.
*/
const union gl_constant_value *const src =
&uni->storage[offset * elements * dmul];
assert(returnType == GLSL_TYPE_FLOAT || returnType == GLSL_TYPE_INT ||
returnType == GLSL_TYPE_UINT || returnType == GLSL_TYPE_DOUBLE);
/* doubles have a different size than the other 3 types */
unsigned bytes = sizeof(src[0]) * elements * rmul;
if (bufSize < 0 || bytes > (unsigned) bufSize) {
_mesa_error( ctx, GL_INVALID_OPERATION,
"glGetnUniform*vARB(out of bounds: bufSize is %d,"
" but %u bytes are required)", bufSize, bytes );
return;
}
/* If the return type and the uniform's native type are "compatible,"
* just memcpy the data. If the types are not compatible, perform a
* slower convert-and-copy process.
*/
if (returnType == uni->type->base_type
|| ((returnType == GLSL_TYPE_INT
|| returnType == GLSL_TYPE_UINT)
&&
(uni->type->base_type == GLSL_TYPE_INT
|| uni->type->base_type == GLSL_TYPE_UINT
|| uni->type->base_type == GLSL_TYPE_SAMPLER
|| uni->type->base_type == GLSL_TYPE_IMAGE))) {
memcpy(paramsOut, src, bytes);
} else {
union gl_constant_value *const dst =
(union gl_constant_value *) paramsOut;
/* This code could be optimized by putting the loop inside the switch
* statements. However, this is not expected to be
* performance-critical code.
*/
for (unsigned i = 0; i < elements; i++) {
int sidx = i * dmul;
int didx = i * rmul;
switch (returnType) {
case GLSL_TYPE_FLOAT:
switch (uni->type->base_type) {
case GLSL_TYPE_UINT:
dst[didx].f = (float) src[sidx].u;
break;
case GLSL_TYPE_INT:
case GLSL_TYPE_SAMPLER:
case GLSL_TYPE_IMAGE:
dst[didx].f = (float) src[sidx].i;
break;
case GLSL_TYPE_BOOL:
dst[didx].f = src[sidx].i ? 1.0f : 0.0f;
break;
case GLSL_TYPE_DOUBLE: {
double tmp;
memcpy(&tmp, &src[sidx].f, sizeof(tmp));
dst[didx].f = tmp;
break;
}
default:
assert(!"Should not get here.");
break;
}
break;
case GLSL_TYPE_DOUBLE:
switch (uni->type->base_type) {
case GLSL_TYPE_UINT: {
double tmp = src[sidx].u;
memcpy(&dst[didx].f, &tmp, sizeof(tmp));
break;
}
case GLSL_TYPE_INT:
case GLSL_TYPE_SAMPLER:
case GLSL_TYPE_IMAGE: {
double tmp = src[sidx].i;
memcpy(&dst[didx].f, &tmp, sizeof(tmp));
break;
}
case GLSL_TYPE_BOOL: {
double tmp = src[sidx].i ? 1.0 : 0.0;
memcpy(&dst[didx].f, &tmp, sizeof(tmp));
break;
}
case GLSL_TYPE_FLOAT: {
double tmp = src[sidx].f;
memcpy(&dst[didx].f, &tmp, sizeof(tmp));
break;
}
default:
assert(!"Should not get here.");
break;
}
break;
case GLSL_TYPE_INT:
case GLSL_TYPE_UINT:
switch (uni->type->base_type) {
case GLSL_TYPE_FLOAT:
/* While the GL 3.2 core spec doesn't explicitly
* state how conversion of float uniforms to integer
* values works, in section 6.2 "State Tables" on
* page 267 it says:
*
* "Unless otherwise specified, when floating
* point state is returned as integer values or
* integer state is returned as floating-point
* values it is converted in the fashion
* described in section 6.1.2"
*
* That section, on page 248, says:
*
* "If GetIntegerv or GetInteger64v are called,
* a floating-point value is rounded to the
* nearest integer..."
*/
dst[didx].i = IROUND(src[sidx].f);
break;
case GLSL_TYPE_BOOL:
dst[didx].i = src[sidx].i ? 1 : 0;
break;
case GLSL_TYPE_DOUBLE: {
double tmp;
memcpy(&tmp, &src[sidx].f, sizeof(tmp));
dst[didx].i = IROUNDD(tmp);
break;
}
default:
assert(!"Should not get here.");
break;
}
break;
default:
assert(!"Should not get here.");
break;
}
}
}
}
}
static void
log_uniform(const void *values, enum glsl_base_type basicType,
unsigned rows, unsigned cols, unsigned count,
bool transpose,
const struct gl_shader_program *shProg,
GLint location,
const struct gl_uniform_storage *uni)
{
const union gl_constant_value *v = (const union gl_constant_value *) values;
const unsigned elems = rows * cols * count;
const char *const extra = (cols == 1) ? "uniform" : "uniform matrix";
printf("Mesa: set program %u %s \"%s\" (loc %d, type \"%s\", "
"transpose = %s) to: ",
shProg->Name, extra, uni->name, location, uni->type->name,
transpose ? "true" : "false");
for (unsigned i = 0; i < elems; i++) {
if (i != 0 && ((i % rows) == 0))
printf(", ");
switch (basicType) {
case GLSL_TYPE_UINT:
printf("%u ", v[i].u);
break;
case GLSL_TYPE_INT:
printf("%d ", v[i].i);
break;
case GLSL_TYPE_FLOAT:
printf("%g ", v[i].f);
break;
case GLSL_TYPE_DOUBLE: {
double tmp;
memcpy(&tmp, &v[i * 2].f, sizeof(tmp));
printf("%g ", tmp);
break;
}
default:
assert(!"Should not get here.");
break;
}
}
printf("\n");
fflush(stdout);
}
#if 0
static void
log_program_parameters(const struct gl_shader_program *shProg)
{
for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
if (shProg->_LinkedShaders[i] == NULL)
continue;
const struct gl_program *const prog = shProg->_LinkedShaders[i]->Program;
printf("Program %d %s shader parameters:\n",
shProg->Name, _mesa_shader_stage_to_string(i));
for (unsigned j = 0; j < prog->Parameters->NumParameters; j++) {
printf("%s: %p %f %f %f %f\n",
prog->Parameters->Parameters[j].Name,
prog->Parameters->ParameterValues[j],
prog->Parameters->ParameterValues[j][0].f,
prog->Parameters->ParameterValues[j][1].f,
prog->Parameters->ParameterValues[j][2].f,
prog->Parameters->ParameterValues[j][3].f);
}
}
fflush(stdout);
}
#endif
/**
* Propagate some values from uniform backing storage to driver storage
*
* Values propagated from uniform backing storage to driver storage
* have all format / type conversions previously requested by the
* driver applied. This function is most often called by the
* implementations of \c glUniform1f, etc. and \c glUniformMatrix2f,
* etc.
*
* \param uni Uniform whose data is to be propagated to driver storage
* \param array_index If \c uni is an array, this is the element of
* the array to be propagated.
* \param count Number of array elements to propagate.
*/
extern "C" void
_mesa_propagate_uniforms_to_driver_storage(struct gl_uniform_storage *uni,
unsigned array_index,
unsigned count)
{
unsigned i;
/* vector_elements and matrix_columns can be 0 for samplers.
*/
const unsigned components = MAX2(1, uni->type->vector_elements);
const unsigned vectors = MAX2(1, uni->type->matrix_columns);
const int dmul = uni->type->is_64bit() ? 2 : 1;
/* Store the data in the driver's requested type in the driver's storage
* areas.
*/
unsigned src_vector_byte_stride = components * 4 * dmul;
for (i = 0; i < uni->num_driver_storage; i++) {
struct gl_uniform_driver_storage *const store = &uni->driver_storage[i];
uint8_t *dst = (uint8_t *) store->data;
const unsigned extra_stride =
store->element_stride - (vectors * store->vector_stride);
const uint8_t *src =
(uint8_t *) (&uni->storage[array_index * (dmul * components * vectors)].i);
#if 0
printf("%s: %p[%d] components=%u vectors=%u count=%u vector_stride=%u "
"extra_stride=%u\n",
__func__, dst, array_index, components,
vectors, count, store->vector_stride, extra_stride);
#endif
dst += array_index * store->element_stride;
switch (store->format) {
case uniform_native: {
unsigned j;
unsigned v;
if (src_vector_byte_stride == store->vector_stride) {
if (extra_stride) {
for (j = 0; j < count; j++) {
memcpy(dst, src, src_vector_byte_stride * vectors);
src += src_vector_byte_stride * vectors;
dst += store->vector_stride * vectors;
dst += extra_stride;
}
} else {
/* Unigine Heaven benchmark gets here */
memcpy(dst, src, src_vector_byte_stride * vectors * count);
src += src_vector_byte_stride * vectors * count;
dst += store->vector_stride * vectors * count;
}
} else {
for (j = 0; j < count; j++) {
for (v = 0; v < vectors; v++) {
memcpy(dst, src, src_vector_byte_stride);
src += src_vector_byte_stride;
dst += store->vector_stride;
}
dst += extra_stride;
}
}
break;
}
case uniform_int_float: {
const int *isrc = (const int *) src;
unsigned j;
unsigned v;
unsigned c;
for (j = 0; j < count; j++) {
for (v = 0; v < vectors; v++) {
for (c = 0; c < components; c++) {
((float *) dst)[c] = (float) *isrc;
isrc++;
}
dst += store->vector_stride;
}
dst += extra_stride;
}
break;
}
default:
assert(!"Should not get here.");
break;
}
}
}
/**
* Return printable string for a given GLSL_TYPE_x
*/
static const char *
glsl_type_name(enum glsl_base_type type)
{
switch (type) {
case GLSL_TYPE_UINT:
return "uint";
case GLSL_TYPE_INT:
return "int";
case GLSL_TYPE_FLOAT:
return "float";
case GLSL_TYPE_DOUBLE:
return "double";
case GLSL_TYPE_BOOL:
return "bool";
case GLSL_TYPE_SAMPLER:
return "sampler";
case GLSL_TYPE_IMAGE:
return "image";
case GLSL_TYPE_ATOMIC_UINT:
return "atomic_uint";
case GLSL_TYPE_STRUCT:
return "struct";
case GLSL_TYPE_INTERFACE:
return "interface";
case GLSL_TYPE_ARRAY:
return "array";
case GLSL_TYPE_VOID:
return "void";
case GLSL_TYPE_ERROR:
return "error";
default:
return "other";
}
}
/**
* Called via glUniform*() functions.
*/
extern "C" void
_mesa_uniform(struct gl_context *ctx, struct gl_shader_program *shProg,
GLint location, GLsizei count,
const GLvoid *values,
enum glsl_base_type basicType,
unsigned src_components)
{
unsigned offset;
int size_mul = glsl_base_type_is_64bit(basicType) ? 2 : 1;
struct gl_uniform_storage *const uni =
validate_uniform_parameters(ctx, shProg, location, count,
&offset, "glUniform");
if (uni == NULL)
return;
if (uni->type->is_matrix()) {
/* Can't set matrix uniforms (like mat4) with glUniform */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glUniform%u(uniform \"%s\"@%d is matrix)",
src_components, uni->name, location);
return;
}
/* Verify that the types are compatible.
*/
const unsigned components = uni->type->is_sampler()
? 1 : uni->type->vector_elements;
if (components != src_components) {
/* glUniformN() must match float/vecN type */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glUniform%u(\"%s\"@%u has %u components, not %u)",
src_components, uni->name, location,
components, src_components);
return;
}
bool match;
switch (uni->type->base_type) {
case GLSL_TYPE_BOOL:
match = (basicType != GLSL_TYPE_DOUBLE);
break;
case GLSL_TYPE_SAMPLER:
match = (basicType == GLSL_TYPE_INT);
break;
case GLSL_TYPE_IMAGE:
match = (basicType == GLSL_TYPE_INT && _mesa_is_desktop_gl(ctx));
break;
default:
match = (basicType == uni->type->base_type);
break;
}
if (!match) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glUniform%u(\"%s\"@%d is %s, not %s)",
src_components, uni->name, location,
glsl_type_name(uni->type->base_type),
glsl_type_name(basicType));
return;
}
if (unlikely(ctx->_Shader->Flags & GLSL_UNIFORMS)) {
log_uniform(values, basicType, components, 1, count,
false, shProg, location, uni);
}
/* Page 100 (page 116 of the PDF) of the OpenGL 3.0 spec says:
*
* "Setting a sampler's value to i selects texture image unit number
* i. The values of i range from zero to the implementation- dependent
* maximum supported number of texture image units."
*
* In addition, table 2.3, "Summary of GL errors," on page 17 (page 33 of
* the PDF) says:
*
* "Error Description Offending command
* ignored?
* ...
* INVALID_VALUE Numeric argument out of range Yes"
*
* Based on that, when an invalid sampler is specified, we generate a
* GL_INVALID_VALUE error and ignore the command.
*/
if (uni->type->is_sampler()) {
for (int i = 0; i < count; i++) {
const unsigned texUnit = ((unsigned *) values)[i];
/* check that the sampler (tex unit index) is legal */
if (texUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glUniform1i(invalid sampler/tex unit index for "
"uniform %d)",
location);
return;
}
}
/* We need to reset the validate flag on changes to samplers in case
* two different sampler types are set to the same texture unit.
*/
ctx->_Shader->Validated = GL_FALSE;
}
if (uni->type->is_image()) {
for (int i = 0; i < count; i++) {
const int unit = ((GLint *) values)[i];
/* check that the image unit is legal */
if (unit < 0 || unit >= (int)ctx->Const.MaxImageUnits) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glUniform1i(invalid image unit index for uniform %d)",
location);
return;
}
}
}
/* Page 82 (page 96 of the PDF) of the OpenGL 2.1 spec says:
*
* "When loading N elements starting at an arbitrary position k in a
* uniform declared as an array, elements k through k + N - 1 in the
* array will be replaced with the new values. Values for any array
* element that exceeds the highest array element index used, as
* reported by GetActiveUniform, will be ignored by the GL."
*
* Clamp 'count' to a valid value. Note that for non-arrays a count > 1
* will have already generated an error.
*/
if (uni->array_elements != 0) {
count = MIN2(count, (int) (uni->array_elements - offset));
}
FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
/* Store the data in the "actual type" backing storage for the uniform.
*/
if (!uni->type->is_boolean()) {
memcpy(&uni->storage[size_mul * components * offset], values,
sizeof(uni->storage[0]) * components * count * size_mul);
} else {
const union gl_constant_value *src =
(const union gl_constant_value *) values;
union gl_constant_value *dst = &uni->storage[components * offset];
const unsigned elems = components * count;
for (unsigned i = 0; i < elems; i++) {
if (basicType == GLSL_TYPE_FLOAT) {
dst[i].i = src[i].f != 0.0f ? ctx->Const.UniformBooleanTrue : 0;
} else {
dst[i].i = src[i].i != 0 ? ctx->Const.UniformBooleanTrue : 0;
}
}
}
_mesa_propagate_uniforms_to_driver_storage(uni, offset, count);
/* If the uniform is a sampler, do the extra magic necessary to propagate
* the changes through.
*/
if (uni->type->is_sampler()) {
bool flushed = false;
for (int i = 0; i < MESA_SHADER_STAGES; i++) {
struct gl_linked_shader *const sh = shProg->_LinkedShaders[i];
/* If the shader stage doesn't use the sampler uniform, skip this. */
if (!uni->opaque[i].active)
continue;
bool changed = false;
for (int j = 0; j < count; j++) {
unsigned unit = uni->opaque[i].index + offset + j;
if (sh->Program->SamplerUnits[unit] != ((unsigned *) values)[j]) {
sh->Program->SamplerUnits[unit] = ((unsigned *) values)[j];
changed = true;
}
}
if (changed) {
if (!flushed) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE | _NEW_PROGRAM);
flushed = true;
}
struct gl_program *const prog = sh->Program;
_mesa_update_shader_textures_used(shProg, prog);
if (ctx->Driver.SamplerUniformChange)
ctx->Driver.SamplerUniformChange(ctx, prog->Target, prog);
}
}
}
/* If the uniform is an image, update the mapping from image
* uniforms to image units present in the shader data structure.
*/
if (uni->type->is_image()) {
for (int i = 0; i < MESA_SHADER_STAGES; i++) {
if (uni->opaque[i].active) {
struct gl_linked_shader *sh = shProg->_LinkedShaders[i];
for (int j = 0; j < count; j++)
sh->Program->sh.ImageUnits[uni->opaque[i].index + offset + j] =
((GLint *) values)[j];
}
}
ctx->NewDriverState |= ctx->DriverFlags.NewImageUnits;
}
}
/**
* Called by glUniformMatrix*() functions.
* Note: cols=2, rows=4 ==> array[2] of vec4
*/
extern "C" void
_mesa_uniform_matrix(struct gl_context *ctx, struct gl_shader_program *shProg,
GLuint cols, GLuint rows,
GLint location, GLsizei count,
GLboolean transpose,
const GLvoid *values, enum glsl_base_type basicType)
{
unsigned offset;
unsigned vectors;
unsigned components;
unsigned elements;
int size_mul;
struct gl_uniform_storage *const uni =
validate_uniform_parameters(ctx, shProg, location, count,
&offset, "glUniformMatrix");
if (uni == NULL)
return;
if (!uni->type->is_matrix()) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glUniformMatrix(non-matrix uniform)");
return;
}
assert(basicType == GLSL_TYPE_FLOAT || basicType == GLSL_TYPE_DOUBLE);
size_mul = basicType == GLSL_TYPE_DOUBLE ? 2 : 1;
assert(!uni->type->is_sampler());
vectors = uni->type->matrix_columns;
components = uni->type->vector_elements;
/* Verify that the types are compatible. This is greatly simplified for
* matrices because they can only have a float base type.
*/
if (vectors != cols || components != rows) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glUniformMatrix(matrix size mismatch)");
return;
}
/* GL_INVALID_VALUE is generated if `transpose' is not GL_FALSE.
* http://www.khronos.org/opengles/sdk/docs/man/xhtml/glUniform.xml
*/
if (transpose) {
if (ctx->API == API_OPENGLES2 && ctx->Version < 30) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glUniformMatrix(matrix transpose is not GL_FALSE)");
return;
}
}
/* Section 2.11.7 (Uniform Variables) of the OpenGL 4.2 Core Profile spec
* says:
*
* "If any of the following conditions occur, an INVALID_OPERATION
* error is generated by the Uniform* commands, and no uniform values
* are changed:
*
* ...
*
* - if the uniform declared in the shader is not of type boolean and
* the type indicated in the name of the Uniform* command used does
* not match the type of the uniform"
*
* There are no Boolean matrix types, so we do not need to allow
* GLSL_TYPE_BOOL here (as _mesa_uniform does).
*/
if (uni->type->base_type != basicType) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glUniformMatrix%ux%u(\"%s\"@%d is %s, not %s)",
cols, rows, uni->name, location,
glsl_type_name(uni->type->base_type),
glsl_type_name(basicType));
return;
}
if (unlikely(ctx->_Shader->Flags & GLSL_UNIFORMS)) {
log_uniform(values, uni->type->base_type, components, vectors, count,
bool(transpose), shProg, location, uni);
}
/* Page 82 (page 96 of the PDF) of the OpenGL 2.1 spec says:
*
* "When loading N elements starting at an arbitrary position k in a
* uniform declared as an array, elements k through k + N - 1 in the
* array will be replaced with the new values. Values for any array
* element that exceeds the highest array element index used, as
* reported by GetActiveUniform, will be ignored by the GL."
*
* Clamp 'count' to a valid value. Note that for non-arrays a count > 1
* will have already generated an error.
*/
if (uni->array_elements != 0) {
count = MIN2(count, (int) (uni->array_elements - offset));
}
FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
/* Store the data in the "actual type" backing storage for the uniform.
*/
elements = components * vectors;
if (!transpose) {
memcpy(&uni->storage[size_mul * elements * offset], values,
sizeof(uni->storage[0]) * elements * count * size_mul);
} else if (basicType == GLSL_TYPE_FLOAT) {
/* Copy and transpose the matrix.
*/
const float *src = (const float *)values;
float *dst = &uni->storage[elements * offset].f;
for (int i = 0; i < count; i++) {
for (unsigned r = 0; r < rows; r++) {
for (unsigned c = 0; c < cols; c++) {
dst[(c * components) + r] = src[c + (r * vectors)];
}
}
dst += elements;
src += elements;
}
} else {
assert(basicType == GLSL_TYPE_DOUBLE);
const double *src = (const double *)values;
double *dst = (double *)&uni->storage[elements * offset].f;
for (int i = 0; i < count; i++) {
for (unsigned r = 0; r < rows; r++) {
for (unsigned c = 0; c < cols; c++) {
dst[(c * components) + r] = src[c + (r * vectors)];
}
}
dst += elements;
src += elements;
}
}
_mesa_propagate_uniforms_to_driver_storage(uni, offset, count);
}
extern "C" bool
_mesa_sampler_uniforms_are_valid(const struct gl_shader_program *shProg,
char *errMsg, size_t errMsgLength)
{
/* Shader does not have samplers. */
if (shProg->data->NumUniformStorage == 0)
return true;
if (!shProg->SamplersValidated) {
_mesa_snprintf(errMsg, errMsgLength,
"active samplers with a different type "
"refer to the same texture image unit");
return false;
}
return true;
}
extern "C" bool
_mesa_sampler_uniforms_pipeline_are_valid(struct gl_pipeline_object *pipeline)
{
/* Section 2.11.11 (Shader Execution), subheading "Validation," of the
* OpenGL 4.1 spec says:
*
* "[INVALID_OPERATION] is generated by any command that transfers
* vertices to the GL if:
*
* ...
*
* - Any two active samplers in the current program object are of
* different types, but refer to the same texture image unit.
*
* - The number of active samplers in the program exceeds the
* maximum number of texture image units allowed."
*/
GLbitfield mask;
GLbitfield TexturesUsed[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
struct gl_linked_shader *shader;
unsigned active_samplers = 0;
const struct gl_shader_program **shProg =
(const struct gl_shader_program **) pipeline->CurrentProgram;
memset(TexturesUsed, 0, sizeof(TexturesUsed));
for (unsigned idx = 0; idx < ARRAY_SIZE(pipeline->CurrentProgram); idx++) {
if (!shProg[idx])
continue;
shader = shProg[idx]->_LinkedShaders[idx];
if (!shader || !shader->Program)
continue;
mask = shader->Program->SamplersUsed;
while (mask) {
const int s = u_bit_scan(&mask);
GLuint unit = shader->Program->SamplerUnits[s];
GLuint tgt = shader->SamplerTargets[s];
/* FIXME: Samplers are initialized to 0 and Mesa doesn't do a
* great job of eliminating unused uniforms currently so for now
* don't throw an error if two sampler types both point to 0.
*/
if (unit == 0)
continue;
if (TexturesUsed[unit] & ~(1 << tgt)) {
pipeline->InfoLog =
ralloc_asprintf(pipeline,
"Program %d: "
"Texture unit %d is accessed with 2 different types",
shProg[idx]->Name, unit);
return false;
}
TexturesUsed[unit] |= (1 << tgt);
}
active_samplers += shader->Program->info.num_textures;
}
if (active_samplers > MAX_COMBINED_TEXTURE_IMAGE_UNITS) {
pipeline->InfoLog =
ralloc_asprintf(pipeline,
"the number of active samplers %d exceed the "
"maximum %d",
active_samplers, MAX_COMBINED_TEXTURE_IMAGE_UNITS);
return false;
}
return true;
}