static void
create_samplers(struct gl_context *ctx, GLsizei count, GLuint *samplers,
const char *caller)
{
GLuint first;
GLint i;
if (!samplers)
return;
_mesa_HashLockMutex(ctx->Shared->SamplerObjects);
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->SamplerObjects, count);
/* Insert the ID and pointer to new sampler object into hash table */
for (i = 0; i < count; i++) {
struct gl_sampler_object *sampObj;
GLuint name = first + i;
sampObj = ctx->Driver.NewSamplerObject(ctx, name);
if (!sampObj) {
_mesa_HashUnlockMutex(ctx->Shared->SamplerObjects);
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s", caller);
return;
}
_mesa_HashInsertLocked(ctx->Shared->SamplerObjects, name, sampObj);
samplers[i] = name;
}
_mesa_HashUnlockMutex(ctx->Shared->SamplerObjects);
}
static void
delete_samplers(struct gl_context *ctx, GLsizei count, const GLuint *samplers)
{
FLUSH_VERTICES(ctx, 0);
_mesa_HashLockMutex(ctx->Shared->SamplerObjects);
for (GLsizei i = 0; i < count; i++) {
if (samplers[i]) {
GLuint j;
struct gl_sampler_object *sampObj =
lookup_samplerobj_locked(ctx, samplers[i]);
if (sampObj) {
/* If the sampler is currently bound, unbind it. */
for (j = 0; j < ctx->Const.MaxCombinedTextureImageUnits; j++) {
if (ctx->Texture.Unit[j].Sampler == sampObj) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE_OBJECT);
_mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[j].Sampler, NULL);
}
}
/* The ID is immediately freed for re-use */
_mesa_HashRemoveLocked(ctx->Shared->SamplerObjects, samplers[i]);
/* But the object exists until its reference count goes to zero */
_mesa_reference_sampler_object(ctx, &sampObj, NULL);
}
}
}
_mesa_HashUnlockMutex(ctx->Shared->SamplerObjects);
}
/**
* Generate a list of new program identifiers.
* \note Not compiled into display lists.
* \note Called by both glGenProgramsNV and glGenProgramsARB.
*/
void GLAPIENTRY
_mesa_GenProgramsARB(GLsizei n, GLuint *ids)
{
GLuint first;
GLuint i;
GET_CURRENT_CONTEXT(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
return;
}
if (!ids)
return;
_mesa_HashLockMutex(ctx->Shared->Programs);
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
/* Insert pointer to dummy program as placeholder */
for (i = 0; i < (GLuint) n; i++) {
_mesa_HashInsertLocked(ctx->Shared->Programs, first + i,
&_mesa_DummyProgram);
}
_mesa_HashUnlockMutex(ctx->Shared->Programs);
/* Return the program names */
for (i = 0; i < (GLuint) n; i++) {
ids[i] = first + i;
}
}
static ALWAYS_INLINE void
bind_samplers(struct gl_context *ctx, GLuint first, GLsizei count,
const GLuint *samplers, bool no_error)
{
GLsizei i;
FLUSH_VERTICES(ctx, 0);
if (samplers) {
/* Note that the error semantics for multi-bind commands differ from
* those of other GL commands.
*
* The Issues section in the ARB_multi_bind spec says:
*
* "(11) Typically, OpenGL specifies that if an error is generated by
* a command, that command has no effect. This is somewhat
* unfortunate for multi-bind commands, because it would require
* a first pass to scan the entire list of bound objects for
* errors and then a second pass to actually perform the
* bindings. Should we have different error semantics?
*
* RESOLVED: Yes. In this specification, when the parameters for
* one of the <count> binding points are invalid, that binding
* point is not updated and an error will be generated. However,
* other binding points in the same command will be updated if
* their parameters are valid and no other error occurs."
*/
_mesa_HashLockMutex(ctx->Shared->SamplerObjects);
for (i = 0; i < count; i++) {
const GLuint unit = first + i;
struct gl_sampler_object * const currentSampler =
ctx->Texture.Unit[unit].Sampler;
struct gl_sampler_object *sampObj;
if (samplers[i] != 0) {
if (currentSampler && currentSampler->Name == samplers[i])
sampObj = currentSampler;
else
sampObj = lookup_samplerobj_locked(ctx, samplers[i]);
/* The ARB_multi_bind spec says:
*
* "An INVALID_OPERATION error is generated if any value
* in <samplers> is not zero or the name of an existing
* sampler object (per binding)."
*/
if (!no_error && !sampObj) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBindSamplers(samplers[%d]=%u is not zero or "
"the name of an existing sampler object)",
i, samplers[i]);
continue;
}
} else {
sampObj = NULL;
}
/* Bind the new sampler */
if (sampObj != currentSampler) {
_mesa_reference_sampler_object(ctx,
&ctx->Texture.Unit[unit].Sampler,
sampObj);
ctx->NewState |= _NEW_TEXTURE_OBJECT;
}
}
_mesa_HashUnlockMutex(ctx->Shared->SamplerObjects);
} else {
/* Unbind all samplers in the range <first> through <first>+<count>-1 */
for (i = 0; i < count; i++) {
const GLuint unit = first + i;
if (ctx->Texture.Unit[unit].Sampler) {
_mesa_reference_sampler_object(ctx,
&ctx->Texture.Unit[unit].Sampler,
NULL);
ctx->NewState |= _NEW_TEXTURE_OBJECT;
}
}
}
}
static inline void
end_samplerobj_lookups(struct gl_context *ctx)
{
_mesa_HashUnlockMutex(ctx->Shared->SamplerObjects);
}