mesa: Add support for the GL_UNIFORM_BUFFER general binding point.
Fixes piglit ARB_uniform_buffer_object/buffer-targets. Reviewed-by: Brian Paul <brianp@vmware.com> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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@ -92,6 +92,11 @@ get_buffer_target(struct gl_context *ctx, GLenum target)
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return &ctx->Texture.BufferObject;
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}
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break;
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case GL_UNIFORM_BUFFER:
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if (ctx->Extensions.ARB_uniform_buffer_object) {
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return &ctx->UniformBuffer;
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}
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break;
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default:
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return NULL;
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}
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@ -840,6 +845,10 @@ _mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
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}
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}
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if (ctx->UniformBuffer == bufObj) {
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_mesa_BindBufferARB( GL_UNIFORM_BUFFER, 0 );
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}
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/* unbind any pixel pack/unpack pointers bound to this buffer */
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if (ctx->Pack.BufferObj == bufObj) {
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_mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 );
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@ -1351,6 +1351,8 @@ static const struct value_desc values[] = {
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{ GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, CONTEXT_INT(Const.UniformBufferOffsetAlignment),
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extra_ARB_uniform_buffer_object },
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{ GL_UNIFORM_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_uniform_buffer_object },
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#endif /* FEATURE_GL */
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};
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@ -1801,6 +1803,10 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
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v->value_int = samp ? samp->Name : 0;
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}
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break;
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/* GL_ARB_uniform_buffer_object */
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case GL_UNIFORM_BUFFER_BINDING:
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v->value_int = ctx->UniformBuffer->Name;
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break;
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}
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}
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@ -3430,6 +3430,13 @@ struct gl_context
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struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
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struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */
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/**
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* Current GL_ARB_uniform_buffer_object binding referenced by
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* GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
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*/
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struct gl_buffer_object *UniformBuffer;
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/*@}*/
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struct gl_meta_state *Meta; /**< for "meta" operations */
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