r300g: add is_rv350 flag

1 files changed, 15 insertions, 5 deletions

diff --git a/src/gallium/drivers/r300/r300_chipset.h b/src/gallium/drivers/r300/r300_chipset.h
index ff957b7c29c..ab649c38573 100644
--- a/src/gallium/drivers/r300/r300_chipset.h
+++ b/src/gallium/drivers/r300/r300_chipset.h
@@ -42,18 +42,28 @@ struct r300_capabilities {
     unsigned num_tex_units;
     /* Whether or not TCL is physically present */
     boolean has_tcl;
-    /* Whether or not this is R400. The differences compared to their R3xx
+    /* Whether or not this is RV350 or newer, including all r400 and r500
+     * chipsets. The differences compared to the oldest r300 chips are:
+     * - Blend LTE/GTE thresholds
+     * - Better MACRO_SWITCH in texture tiling
+     * - Half float vertex
+     * - More HyperZ optimizations */
+    boolean is_rv350;
+    /* Whether or not this is R400. The differences compared their rv350
      * cousins are:
      * - Extended fragment shader registers
-     * - Blend LTE/GTE thresholds */
+     * - 3DC texture compression (RGTC2) */
     boolean is_r400;
     /* Whether or not this is an RV515 or newer; R500s have many differences
-     * that require extra consideration, compared to their R3xx cousins:
+     * that require extra consideration, compared to their rv350 cousins:
      * - Extra bit of width and height on texture sizes
      * - Blend color is split across two registers
-     * - Blend LTE/GTE thresholds
      * - Universal Shader (US) block used for fragment shaders
-     * - FP16 blending and multisampling */
+     * - FP16 blending and multisampling
+     * - Full RGTC texture compression
+     * - 24-bit depth textures
+     * - Stencil back-face reference value
+     * - Ability to render up to 2^24 - 1 vertices with signed index offset */
     boolean is_r500;
     /* Whether or not the second pixel pipe is accessed with the high bit */
     boolean high_second_pipe;