r300-gallium: Add derived state for vertex formats.

[mesa.git] / src / gallium / drivers / r300 / r300_emit.c

diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index c0990cabd9c14edb75fbc776b2b47db3d7422646..8108b99f944fc15477773c8dfb1f9a68df7cd86f 100644 (file)
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -136,6 +136,21 @@ void r500_emit_fragment_shader(struct r300_context* r300,
     END_CS;
 }
 
+/* Translate pipe_format into US_OUT_FMT. Note that formats are stored from
+ * C3 to C0. */
+uint32_t translate_out_fmt(enum pipe_format format)
+{
+    switch (format) {
+        case PIPE_FORMAT_A8R8G8B8_UNORM:
+            return R300_US_OUT_FMT_C4_8 |
+                R300_C0_SEL_B | R300_C1_SEL_G |
+                R300_C2_SEL_R | R300_C3_SEL_A;
+        default:
+            return R300_US_OUT_FMT_UNUSED;
+    }
+    return 0;
+}
+
 /* XXX add pitch, stride, z/stencil buf */
 void r300_emit_fb_state(struct r300_context* r300,
                         struct pipe_framebuffer_state* fb)
@@ -149,6 +164,9 @@ void r300_emit_fb_state(struct r300_context* r300,
         tex = (struct r300_texture*)fb->cbufs[i]->texture;
         OUT_CS_REG_SEQ(R300_RB3D_COLOROFFSET0 + (4 * i), 1);
         OUT_CS_RELOC(tex->buffer, 0, 0, RADEON_GEM_DOMAIN_VRAM, 0);
+
+        OUT_CS_REG(R300_US_OUT_FMT_0 + (4 * i),
+            translate_out_fmt(fb->cbufs[i]->format));
     }
     R300_PACIFY;
     END_CS;