mesa: store gl_program in gl_transform_feedback_object rather than gl_shader_program

This will allow us to make the CurrentProgram array store gl_program which allows
us to do a bunch of simplifications.

Reviewed-by: Eric Anholt <[email protected]>

2 files changed, 13 insertions, 14 deletions

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 9b736bb9a3f..35dd8135f26 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1730,12 +1730,12 @@ struct gl_transform_feedback_object
    unsigned GlesRemainingPrims;
 
    /**
-    * The shader program active when BeginTransformFeedback() was called.
+    * The program active when BeginTransformFeedback() was called.
     * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
     * where stage is the pipeline stage that is the source of data for
     * transform feedback.
     */
-   struct gl_shader_program *shader_program;
+   struct gl_program *program;
 
    /** The feedback buffers */
    GLuint BufferNames[MAX_FEEDBACK_BUFFERS];
diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c
index 2088c76e5ea..771223aff99 100644
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -45,7 +45,7 @@
 
 struct using_program_tuple
 {
-   struct gl_shader_program *shProg;
+   struct gl_program *prog;
    bool found;
 };
 
@@ -54,7 +54,7 @@ active_xfb_object_references_program(GLuint key, void *data, void *user_data)
 {
    struct using_program_tuple *callback_data = user_data;
    struct gl_transform_feedback_object *obj = data;
-   if (obj->Active && obj->shader_program == callback_data->shProg)
+   if (obj->Active && obj->program == callback_data->prog)
       callback_data->found = true;
 }
 
@@ -66,8 +66,8 @@ _mesa_transform_feedback_is_using_program(struct gl_context *ctx,
                                           struct gl_shader_program *shProg)
 {
    struct using_program_tuple callback_data;
-   callback_data.shProg = shProg;
    callback_data.found = false;
+   callback_data.prog = shProg->xfb_program;
 
    _mesa_HashWalk(ctx->TransformFeedback.Objects,
                   active_xfb_object_references_program, &callback_data);
@@ -379,18 +379,18 @@ _mesa_compute_max_transform_feedback_vertices(struct gl_context *ctx,
 
 /**
  * Figure out which stage of the pipeline is the source of transform feedback
- * data given the current context state, and return its gl_shader_program.
+ * data given the current context state, and return its gl_program.
  *
  * If no active program can generate transform feedback data (i.e. no vertex
  * shader is active), returns NULL.
  */
-static struct gl_shader_program *
+static struct gl_program *
 get_xfb_source(struct gl_context *ctx)
 {
    int i;
    for (i = MESA_SHADER_GEOMETRY; i >= MESA_SHADER_VERTEX; i--) {
       if (ctx->_Shader->CurrentProgram[i] != NULL)
-         return ctx->_Shader->CurrentProgram[i];
+         return ctx->_Shader->CurrentProgram[i]->_LinkedShaders[i]->Program;
    }
    return NULL;
 }
@@ -401,7 +401,6 @@ _mesa_BeginTransformFeedback(GLenum mode)
 {
    struct gl_transform_feedback_object *obj;
    struct gl_transform_feedback_info *info = NULL;
-   struct gl_shader_program *source;
    GLuint i;
    unsigned vertices_per_prim;
    GET_CURRENT_CONTEXT(ctx);
@@ -411,14 +410,14 @@ _mesa_BeginTransformFeedback(GLenum mode)
    /* Figure out what pipeline stage is the source of data for transform
     * feedback.
     */
-   source = get_xfb_source(ctx);
+   struct gl_program *source = get_xfb_source(ctx);
    if (source == NULL) {
       _mesa_error(ctx, GL_INVALID_OPERATION,
                   "glBeginTransformFeedback(no program active)");
       return;
    }
 
-   info = source->xfb_program->sh.LinkedTransformFeedback;
+   info = source->sh.LinkedTransformFeedback;
 
    if (info->NumOutputs == 0) {
       _mesa_error(ctx, GL_INVALID_OPERATION,
@@ -478,9 +477,9 @@ _mesa_BeginTransformFeedback(GLenum mode)
       obj->GlesRemainingPrims = max_vertices / vertices_per_prim;
    }
 
-   if (obj->shader_program != source) {
+   if (obj->program != source) {
       ctx->NewDriverState |= ctx->DriverFlags.NewTransformFeedbackProg;
-      obj->shader_program = source;
+      obj->program = source;
    }
 
    assert(ctx->Driver.BeginTransformFeedback);
@@ -1199,7 +1198,7 @@ _mesa_ResumeTransformFeedback(void)
     *  the program object being used by the current transform feedback object
     *  is not active."
     */
-   if (obj->shader_program != get_xfb_source(ctx)) {
+   if (obj->program != get_xfb_source(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION,
                   "glResumeTransformFeedback(wrong program bound)");
       return;