i965: Add support for GL_FIXED vertex attributes.

This sadly requires work in the VS to rescale them, because the
hardware doesn't support this format natively.

Fixes arb_es2_compatibility-fixed-type and gtf/fixed_data_type.

Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_vs.h b/src/mesa/drivers/dri/i965/brw_vs.h
index 7ca84a54b01..432994a8534 100644
--- a/src/mesa/drivers/dri/i965/brw_vs.h
+++ b/src/mesa/drivers/dri/i965/brw_vs.h
@@ -41,6 +41,10 @@
 
 struct brw_vs_prog_key {
    GLuint program_string_id;
+   /**
+    * Number of channels of the vertex attribute that need GL_FIXED rescaling
+    */
+   uint8_t gl_fixed_input_size[VERT_ATTRIB_MAX];
    GLuint nr_userclip:4;
    GLuint copy_edgeflag:1;
    GLuint point_coord_replace:8;