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mesa: Add binding point for indirect buffer

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Based on part of Patch 2 of Christoph Bumiller's ARB_draw_indirect series.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Chris Forbes 2013-11-06 20:03:21 +13:00
parent 56e98fe2fe
commit a95236cfc1
4 changed files with 22 additions and 0 deletions
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14
src/mesa/main/bufferobj.c
View file

@ -86,6 +86,12 @@ get_buffer_target(struct gl_context *ctx, GLenum target)
return &ctx->CopyReadBuffer;
case GL_COPY_WRITE_BUFFER:
return &ctx->CopyWriteBuffer;
case GL_DRAW_INDIRECT_BUFFER:
if (ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_draw_indirect) {
return &ctx->DrawIndirectBuffer;
}
break;
case GL_TRANSFORM_FEEDBACK_BUFFER:
if (ctx->Extensions.EXT_transform_feedback) {
return &ctx->TransformFeedback.CurrentBuffer;
@ -626,6 +632,9 @@ _mesa_init_buffer_objects( struct gl_context *ctx )
_mesa_reference_buffer_object(ctx, &ctx->UniformBuffer,
ctx->Shared->NullBufferObj);
_mesa_reference_buffer_object(ctx, &ctx->DrawIndirectBuffer,
ctx->Shared->NullBufferObj);
for (i = 0; i < MAX_COMBINED_UNIFORM_BUFFERS; i++) {
_mesa_reference_buffer_object(ctx,
&ctx->UniformBufferBindings[i].BufferObject,
@ -875,6 +884,11 @@ _mesa_DeleteBuffers(GLsizei n, const GLuint *ids)
_mesa_BindBuffer( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
}
/* unbind ARB_draw_indirect binding point */
if (ctx->DrawIndirectBuffer == bufObj) {
_mesa_BindBuffer( GL_DRAW_INDIRECT_BUFFER, 0 );
}
/* unbind ARB_copy_buffer binding points */
if (ctx->CopyReadBuffer == bufObj) {
_mesa_BindBuffer( GL_COPY_READ_BUFFER, 0 );

4
src/mesa/main/get.c
View file

@ -914,6 +914,10 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
case GL_ATOMIC_COUNTER_BUFFER_BINDING:
v->value_int = ctx->AtomicBuffer->Name;
break;
/* GL_ARB_draw_indirect */
case GL_DRAW_INDIRECT_BUFFER_BINDING:
v->value_int = ctx->DrawIndirectBuffer->Name;
break;
}
}

2
src/mesa/main/get_hash_params.py
View file

@ -747,6 +747,8 @@ descriptor=[
{ "apis": ["GL_CORE"], "params": [
# GL_ARB_texture_buffer_range
[ "TEXTURE_BUFFER_OFFSET_ALIGNMENT", "CONTEXT_INT(Const.TextureBufferOffsetAlignment), extra_ARB_texture_buffer_range" ],
# GL_ARB_draw_indirect
[ "DRAW_INDIRECT_BUFFER_BINDING", "LOC_CUSTOM, TYPE_INT, 0, extra_ARB_draw_indirect" ],
]}
]

2
src/mesa/main/mtypes.h
View file

@ -3903,6 +3903,8 @@ struct gl_context
struct gl_perf_monitor_state PerfMonitor;
struct gl_buffer_object *DrawIndirectBuffer; /** < GL_ARB_draw_indirect */
struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */