st/vega: Move vertex transformation to shader.

It was done in path-to-polygon conversion.  That meant that the
results were invalidated when the transformation was modified, and CPU
had to recreate the vertex buffer with new vertices.  It could be a
performance hit for apps that animate.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/vega/shader.c b/src/gallium/state_trackers/vega/shader.c
index 3d397f9ed4c..db410e3dadb 100644
--- a/src/gallium/state_trackers/vega/shader.c
+++ b/src/gallium/state_trackers/vega/shader.c
@@ -50,6 +50,7 @@ struct shader {
    struct vg_paint *paint;
    struct vg_image *image;
 
+   struct matrix modelview;
    struct matrix paint_matrix;
 
    VGboolean drawing_image;
@@ -299,6 +300,7 @@ void shader_bind(struct shader *shader)
    renderer_validate_for_shader(ctx->renderer,
          (const struct pipe_sampler_state **) samplers,
          sampler_views, num_samplers,
+         &shader->modelview,
          shader->fs, (const void *) shader->constants, param_bytes);
 }
 
@@ -328,6 +330,15 @@ void shader_set_image(struct shader *shader, struct vg_image *img)
 }
 
 /**
+ * Set the transformation to map a vertex to the surface coordinates.
+ */
+void shader_set_surface_matrix(struct shader *shader,
+                               const struct matrix *mat)
+{
+   shader->modelview = *mat;
+}
+
+/**
  * Set the transformation to map a pixel to the paint coordinates.
  */
 void shader_set_paint_matrix(struct shader *shader, const struct matrix *mat)