r300-gallium: Add r500 passthrough shader assembly.

This allows a simple passthrough fragment shader to be provided on r500.

1 files changed, 33 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index 585a9e729d..4d1b10de23 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -79,6 +79,39 @@ void r300_emit_dsa_state(struct r300_context* r300,
     END_CS;
 }
 
+void r300_emit_fragment_shader(struct r300_context* r300,
+                               struct r300_fragment_shader* shader)
+{
+    CS_LOCALS(r300);
+}
+
+void r500_emit_fragment_shader(struct r300_context* r300,
+                               struct r500_fragment_shader* shader)
+{
+    CS_LOCALS(r300);
+    int i = 0;
+
+    BEGIN_CS(8 + (shader->shader.instruction_count * 6) + 6);
+    OUT_CS_REG(R500_US_CONFIG, R500_ZERO_TIMES_ANYTHING_EQUALS_ZERO);
+    OUT_CS_REG(R500_US_PIXSIZE, shader->shader.stack_size);
+    OUT_CS_REG(R500_US_CODE_ADDR, R500_US_CODE_START_ADDR(0) |
+        R500_US_CODE_END_ADDR(shader->shader.instruction_count));
+
+    OUT_CS_REG(R500_GA_US_VECTOR_INDEX, R500_GA_US_VECTOR_INDEX_TYPE_INSTR);
+    OUT_CS_ONE_REG(R500_GA_US_VECTOR_DATA,
+        shader->shader.instruction_count * 6);
+    for (i = 0; i < shader->shader.instruction_count; i++) {
+        CS_OUT(shader->instructions[i].inst0);
+        CS_OUT(shader->instructions[i].inst1);
+        CS_OUT(shader->instructions[i].inst2);
+        CS_OUT(shader->instructions[i].inst3);
+        CS_OUT(shader->instructions[i].inst4);
+        CS_OUT(shader->instructions[i].inst5);
+    }
+    R300_PACIFY;
+    END_CS;
+}
+
 /* XXX add pitch, stride, z/stencil buf */
 void r300_emit_fb_state(struct r300_context* r300,
                         struct pipe_framebuffer_state* fb)