cell: initial support for fragment shader code generation.

TGSI shaders are translated into SPE instructions which are then sent to
the SPEs for execution.  Only a few opcodes work, no swizzling yet, no
support for constants/immediates, etc.

1 files changed, 24 insertions, 1 deletions

diff --git a/src/gallium/drivers/cell/spu/spu_main.c b/src/gallium/drivers/cell/spu/spu_main.c
index 2a7cb75f59..78260c4259 100644
--- a/src/gallium/drivers/cell/spu/spu_main.c
+++ b/src/gallium/drivers/cell/spu/spu_main.c
@@ -232,7 +232,7 @@ cmd_state_fragment_ops(const struct cell_command_fragment_ops *fops)
       printf("SPU %u: CMD_STATE_FRAGMENT_OPS\n", spu.init.id);
    /* Copy SPU code from batch buffer to spu buffer */
    memcpy(spu.fragment_ops_code, fops->code, SPU_MAX_FRAGMENT_OPS_INSTS * 4);
-   /* Copy state info */
+   /* Copy state info (for fallback case only) */
    memcpy(&spu.depth_stencil_alpha, &fops->dsa, sizeof(fops->dsa));
    memcpy(&spu.blend, &fops->blend, sizeof(fops->blend));
 
@@ -245,6 +245,21 @@ cmd_state_fragment_ops(const struct cell_command_fragment_ops *fops)
 
 
 static void
+cmd_state_fragment_program(const struct cell_command_fragment_program *fp)
+{
+   if (Debug)
+      printf("SPU %u: CMD_STATE_FRAGMENT_PROGRAM\n", spu.init.id);
+   /* Copy SPU code from batch buffer to spu buffer */
+   memcpy(spu.fragment_program_code, fp->code,
+          SPU_MAX_FRAGMENT_PROGRAM_INSTS * 4);
+#if 01
+   /* Point function pointer at new code */
+   spu.fragment_program = (spu_fragment_program_func)spu.fragment_program_code;
+#endif
+}
+
+
+static void
 cmd_state_framebuffer(const struct cell_command_framebuffer *cmd)
 {
    if (Debug)
@@ -473,6 +488,14 @@ cmd_batch(uint opcode)
             pos += sizeof(*fops) / 8;
          }
          break;
+      case CELL_CMD_STATE_FRAGMENT_PROGRAM:
+         {
+            struct cell_command_fragment_program *fp
+               = (struct cell_command_fragment_program *) &buffer[pos];
+            cmd_state_fragment_program(fp);
+            pos += sizeof(*fp) / 8;
+         }
+         break;
       case CELL_CMD_STATE_SAMPLER:
          {
             struct cell_command_sampler *sampler