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, 15 insertions, 0 deletions

diff --git a/src/gallium/drivers/cell/spu/spu_main.h b/src/gallium/drivers/cell/spu/spu_main.h
index d40539da83..2c7b625840 100644
--- a/src/gallium/drivers/cell/spu/spu_main.h
+++ b/src/gallium/drivers/cell/spu/spu_main.h
@@ -75,6 +75,12 @@ typedef void (*spu_fragment_ops_func)(uint x, uint y,
                                       vector float fragAlpha,
                                       vector unsigned int mask);
 
+/** Function for running fragment program */
+typedef void (*spu_fragment_program_func)(vector float *inputs,
+                                          vector float *outputs,
+                                          vector float *constants);
+
+
 struct spu_framebuffer
 {
    void *color_start;              /**< addr of color surface in main memory */
@@ -142,9 +148,18 @@ struct spu_global
    /** Current fragment ops function */
    spu_fragment_ops_func fragment_ops;
 
+   /** Current fragment program machine code */
+   uint fragment_program_code[SPU_MAX_FRAGMENT_PROGRAM_INSTS];
+   /** Current fragment ops function */
+   spu_fragment_program_func fragment_program;
+
    /** Current texture sampler function */
    spu_sample_texture_func sample_texture[CELL_MAX_SAMPLERS];
 
+   /** Fragment program constants (XXX preliminary/used) */
+#define MAX_CONSTANTS 32
+   vector float constants[MAX_CONSTANTS];
+
 } ALIGN16_ATTRIB;