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/*
* Copyright © 2020 Advanced Micro Devices, Inc.
*
* 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 (including the next
* paragraph) 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.
*/
/* This implements vertex array state tracking for glthread. It's separate
* from the rest of Mesa. Only minimum functionality is implemented here
* to serve glthread.
*/
#include "main/glthread.h"
#include "main/mtypes.h"
#include "main/hash.h"
#include "main/dispatch.h"
/* TODO:
* - Implement better tracking of user pointers
* - These can unbind user pointers:
* ARB_vertex_attrib_binding
* ARB_direct_state_access
* EXT_direct_state_access
*/
static struct glthread_vao *
lookup_vao(struct gl_context *ctx, GLuint id)
{
struct glthread_state *glthread = &ctx->GLThread;
struct glthread_vao *vao;
assert(id != 0);
if (glthread->LastLookedUpVAO &&
glthread->LastLookedUpVAO->Name == id) {
vao = glthread->LastLookedUpVAO;
} else {
vao = _mesa_HashLookupLocked(glthread->VAOs, id);
if (!vao)
return NULL;
glthread->LastLookedUpVAO = vao;
}
return vao;
}
void
_mesa_glthread_BindVertexArray(struct gl_context *ctx, GLuint id)
{
struct glthread_state *glthread = &ctx->GLThread;
if (id == 0) {
glthread->CurrentVAO = &glthread->DefaultVAO;
} else {
struct glthread_vao *vao = lookup_vao(ctx, id);
if (vao)
glthread->CurrentVAO = vao;
}
}
void
_mesa_glthread_DeleteVertexArrays(struct gl_context *ctx,
GLsizei n, const GLuint *ids)
{
struct glthread_state *glthread = &ctx->GLThread;
if (!ids)
return;
for (int i = 0; i < n; i++) {
/* IDs equal to 0 should be silently ignored. */
if (!ids[i])
continue;
struct glthread_vao *vao = lookup_vao(ctx, ids[i]);
if (!vao)
continue;
/* If the array object is currently bound, the spec says "the binding
* for that object reverts to zero and the default vertex array
* becomes current."
*/
if (glthread->CurrentVAO == vao)
glthread->CurrentVAO = &glthread->DefaultVAO;
if (glthread->LastLookedUpVAO == vao)
glthread->LastLookedUpVAO = NULL;
/* The ID is immediately freed for re-use */
_mesa_HashRemoveLocked(glthread->VAOs, vao->Name);
free(vao);
}
}
void
_mesa_glthread_GenVertexArrays(struct gl_context *ctx,
GLsizei n, GLuint *arrays)
{
struct glthread_state *glthread = &ctx->GLThread;
if (!arrays)
return;
/* The IDs have been generated at this point. Create VAOs for glthread. */
for (int i = 0; i < n; i++) {
GLuint id = arrays[i];
struct glthread_vao *vao;
vao = calloc(1, sizeof(*vao));
if (!vao)
continue; /* Is that all we can do? */
vao->Name = id;
_mesa_HashInsertLocked(glthread->VAOs, id, vao);
}
}
void
_mesa_glthread_ClientState(struct gl_context *ctx, GLuint *vaobj,
gl_vert_attrib attrib, bool enable)
{
struct glthread_state *glthread = &ctx->GLThread;
struct glthread_vao *vao;
if (attrib >= VERT_ATTRIB_MAX)
return;
if (vaobj) {
vao = lookup_vao(ctx, *vaobj);
if (!vao)
return;
} else {
vao = glthread->CurrentVAO;
}
if (enable)
vao->Enabled |= 1u << attrib;
else
vao->Enabled &= ~(1u << attrib);
}
void
_mesa_glthread_AttribPointer(struct gl_context *ctx, gl_vert_attrib attrib)
{
struct glthread_state *glthread = &ctx->GLThread;
struct glthread_vao *vao = glthread->CurrentVAO;
if (glthread->CurrentArrayBufferName != 0)
vao->UserPointerMask &= ~(1u << attrib);
else
vao->UserPointerMask |= 1u << attrib;
}
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