From c732f68cf4aca06bac03e6a70c49047057c0c357 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Fri, 6 Sep 2013 14:47:19 -0700 Subject: [PATCH] mesa: Track the vertex program active at BeginTransformFeedback() time. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The next few patches will use this for API error checking. All of the drivers appear to CALLOC_STRUCT transform feedback objects, so this should be properly NULL initialized on creation. Signed-off-by: Kenneth Graunke Reviewed-by: Marek Olšák --- src/mesa/main/mtypes.h | 6 ++++++ src/mesa/main/transformfeedback.c | 2 ++ 2 files changed, 8 insertions(+) diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index 9df165403bd..b9625e8e72b 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -1717,6 +1717,12 @@ struct gl_transform_feedback_object at least once? */ GLboolean EverBound; /**< Has this object been bound? */ + /** + * The shader program active when BeginTransformFeedback() was called. + * When active and unpaused, this equals ctx->Shader.CurrentVertexProgram. + */ + struct gl_shader_program *shader_program; + /** * GLES: if Active is true, remaining number of primitives which can be * rendered without overflow. This is necessary to track because GLES diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c index eca0e5f55c9..c2c14a1d339 100644 --- a/src/mesa/main/transformfeedback.c +++ b/src/mesa/main/transformfeedback.c @@ -406,6 +406,8 @@ _mesa_BeginTransformFeedback(GLenum mode) obj->GlesRemainingPrims = max_vertices / vertices_per_prim; } + obj->shader_program = ctx->Shader.CurrentVertexProgram; + assert(ctx->Driver.BeginTransformFeedback); ctx->Driver.BeginTransformFeedback(ctx, mode, obj); } -- 2.30.2