cell: Initial code-gen for alpha / stencil / depth testing

Alpha test is currently broken because all per-fragment testing occurs
before alpha is calculated.

Stencil test is currently broken because the Z-clear code asserts if
there is a stencil buffer.

src/gallium/drivers/cell/common.h

@@ -104,6 +104,16 @@
 
 
 
+/**
+ */
+struct cell_command_depth_stencil_alpha_test {
+   uint64_t base;               /**< Effective address of code start. */
+   unsigned size;               /**< Size in bytes of test code. */
+   unsigned read_depth;         /**< Flag: should depth be read? */
+   unsigned read_stencil;       /**< Flag: should stencil be read? */
+};
+
+
 /**
  * Tell SPUs about the framebuffer size, location
  */

src/gallium/drivers/cell/ppu/Makefile

@@ -27,6 +27,7 @@ SOURCES = \
 	cell_flush.c \
 	cell_state_derived.c \
 	cell_state_emit.c \
+	cell_state_per_fragment.c \
 	cell_state_shader.c \
 	cell_pipe_state.c \
 	cell_screen.c \

src/gallium/drivers/cell/ppu/cell_context.h

@@ -57,16 +57,37 @@ struct cell_fragment_shader_state
 };
 
 
+struct cell_blend_state {
+   struct pipe_blend_state base;
+
+   /**
+    * Generated code to perform alpha blending
+    */
+   struct spe_function code;
+};
+
+
+struct cell_depth_stencil_alpha_state {
+   struct pipe_depth_stencil_alpha_state   base;
+
+   /**
+    * Generated code to perform alpha, stencil, and depth testing on the SPE
+    */
+   struct spe_function code;
+
+};
+
+
 struct cell_context
 {
    struct pipe_context pipe;
 
    struct cell_winsys *winsys;
 
-   const struct pipe_blend_state *blend;
+   const struct cell_blend_state *blend;
    const struct pipe_sampler_state *sampler[PIPE_MAX_SAMPLERS];
    uint num_samplers;
-   const struct pipe_depth_stencil_alpha_state   *depth_stencil;
+   const struct cell_depth_stencil_alpha_state   *depth_stencil;
    const struct pipe_rasterizer_state *rasterizer;
    const struct cell_vertex_shader_state *vs;
    const struct cell_fragment_shader_state *fs;

src/gallium/drivers/cell/ppu/cell_pipe_state.c

@@ -36,6 +36,7 @@
 #include "cell_context.h"
 #include "cell_state.h"
 #include "cell_texture.h"
+#include "cell_state_per_fragment.h"
 
 
 
@@ -43,7 +44,12 @@ static void *
 cell_create_blend_state(struct pipe_context *pipe,
                         const struct pipe_blend_state *blend)
 {
-   return mem_dup(blend, sizeof(*blend));
+   struct cell_blend_state *cb = MALLOC(sizeof(struct cell_blend_state));
+
+   (void) memcpy(cb, blend, sizeof(*blend));
+   cb->code.store = NULL;
+
+   return cb;
 }
 
 
@@ -54,7 +60,7 @@ cell_bind_blend_state(struct pipe_context *pipe, void *blend)
 
    draw_flush(cell->draw);
 
-   cell->blend = (const struct pipe_blend_state *)blend;
+   cell->blend = (const struct cell_blend_state *)blend;
 
    cell->dirty |= CELL_NEW_BLEND;
 }
@@ -63,7 +69,10 @@ cell_bind_blend_state(struct pipe_context *pipe, void *blend)
 static void
 cell_delete_blend_state(struct pipe_context *pipe, void *blend)
 {
-   FREE(blend);
+   struct cell_blend_state *cb = (struct cell_blend_state *) blend;
+   
+   spe_release_func(& cb->code);
+   FREE(cb);
 }
 
 
@@ -87,7 +96,13 @@ static void *
 cell_create_depth_stencil_alpha_state(struct pipe_context *pipe,
                  const struct pipe_depth_stencil_alpha_state *depth_stencil)
 {
-   return mem_dup(depth_stencil, sizeof(*depth_stencil));
+   struct cell_depth_stencil_alpha_state *cdsa =
+       MALLOC(sizeof(struct cell_depth_stencil_alpha_state));
+
+   (void) memcpy(cdsa, depth_stencil, sizeof(*depth_stencil));
+   cdsa->code.store = NULL;
+
+   return cdsa;
 }
 
 
@@ -96,12 +111,16 @@ cell_bind_depth_stencil_alpha_state(struct pipe_context *pipe,
                                     void *depth_stencil)
 {
    struct cell_context *cell = cell_context(pipe);
+   struct cell_depth_stencil_alpha_state *cdsa =
+       (struct cell_depth_stencil_alpha_state *) depth_stencil;
 
    draw_flush(cell->draw);
 
-   cell->depth_stencil
-      = (const struct pipe_depth_stencil_alpha_state *) depth_stencil;
+   if (cdsa->code.store == NULL) {
+      cell_generate_depth_stencil_test(cdsa);
+   }
 
+   cell->depth_stencil = cdsa;
    cell->dirty |= CELL_NEW_DEPTH_STENCIL;
 }
 
@@ -109,7 +128,11 @@ cell_bind_depth_stencil_alpha_state(struct pipe_context *pipe,
 static void
 cell_delete_depth_stencil_alpha_state(struct pipe_context *pipe, void *depth)
 {
-   FREE(depth);
+   struct cell_depth_stencil_alpha_state *cdsa =
+       (struct cell_depth_stencil_alpha_state *) depth;
+
+   spe_release_func(& cdsa->code);
+   FREE(cdsa);
 }
 
 

src/gallium/drivers/cell/ppu/cell_state_emit.c

@@ -71,9 +71,27 @@ cell_emit_state(struct cell_context *cell)
    }
 
    if (cell->dirty & CELL_NEW_DEPTH_STENCIL) {
-      emit_state_cmd(cell, CELL_CMD_STATE_DEPTH_STENCIL,
-                     cell->depth_stencil,
-                     sizeof(struct pipe_depth_stencil_alpha_state));
+      struct cell_command_depth_stencil_alpha_test dsat;
+      
+
+      dsat.base = (intptr_t) cell->depth_stencil->code.store;
+      dsat.size = (char *) cell->depth_stencil->code.csr
+	  - (char *) cell->depth_stencil->code.store;
+      dsat.read_depth = TRUE;
+      dsat.read_stencil = FALSE;
+
+      {
+	 uint32_t *p = cell->depth_stencil->code.store;
+
+	 printf("\t.text\n");
+	 for (/* empty */; p < cell->depth_stencil->code.csr; p++) {
+	    printf("\t.long\t0x%04x\n", *p);
+	 }
+	 fflush(stdout);
+      }
+
+      emit_state_cmd(cell, CELL_CMD_STATE_DEPTH_STENCIL, &dsat,
+		     sizeof(dsat));
    }
 
    if (cell->dirty & CELL_NEW_SAMPLER) {

src/gallium/drivers/cell/ppu/cell_state_per_fragment.h

@@ -0,0 +1,35 @@
+/*
+ * (C) Copyright IBM Corporation 2008
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * AUTHORS, COPYRIGHT HOLDERS, AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef CELL_STATE_PER_FRAGMENT_H
+#define CELL_STATE_PER_FRAGMENT_H
+
+extern void
+cell_generate_depth_stencil_test(struct cell_depth_stencil_alpha_state *cdsa);
+
+extern void
+cell_generate_alpha_blend(struct cell_blend_state *cb,
+			  const struct pipe_blend_color *blend_color);
+
+#endif /* CELL_STATE_PER_FRAGMENT_H */

src/gallium/drivers/cell/spu/Makefile

@@ -19,6 +19,7 @@ SOURCES = \
 	spu_main.c \
 	spu_blend.c \
 	spu_dcache.c \
+	spu_per_fragment_op.c \
 	spu_render.c \
 	spu_texture.c \
 	spu_tile.c \

src/gallium/drivers/cell/spu/spu_main.c

@@ -58,6 +58,9 @@ struct spu_vs_context draw;
 static unsigned char attribute_fetch_code_buffer[136 * PIPE_ATTRIB_MAX]
     ALIGN16_ATTRIB;
 
+static unsigned char depth_stencil_code_buffer[4 * 64]
+    ALIGN16_ATTRIB;
+
 /**
  * Tell the PPU that this SPU has finished copying a buffer to
  * local store and that it may be reused by the PPU.
@@ -248,14 +251,26 @@ cmd_state_blend(const struct pipe_blend_state *state)
 
 
 static void
-cmd_state_depth_stencil(const struct pipe_depth_stencil_alpha_state *state)
+cmd_state_depth_stencil(const struct cell_command_depth_stencil_alpha_test *state)
 {
    if (Debug)
       printf("SPU %u: DEPTH_STENCIL: ztest %d\n",
              spu.init.id,
-             state->depth.enabled);
+             state->read_depth);
 
-   memcpy(&spu.depth_stencil, state, sizeof(*state));
+   ASSERT_ALIGN16(state->base);
+
+   mfc_get(depth_stencil_code_buffer,
+	   (unsigned int) state->base,  /* src */
+	   ROUNDUP16(state->size),
+	   TAG_BATCH_BUFFER,
+	   0, /* tid */
+	   0  /* rid */);
+   wait_on_mask(1 << TAG_BATCH_BUFFER);
+
+   spu.frag_test = (frag_test_func) depth_stencil_code_buffer;
+   spu.read_depth = state->read_depth;
+   spu.read_stencil = state->read_stencil;
 }
 
 
@@ -415,9 +430,9 @@ cmd_batch(uint opcode)
          pos += (1 + ROUNDUP8(sizeof(struct pipe_blend_state)) / 8);
          break;
       case CELL_CMD_STATE_DEPTH_STENCIL:
-         cmd_state_depth_stencil((struct pipe_depth_stencil_alpha_state *)
+         cmd_state_depth_stencil((struct cell_command_depth_stencil_alpha_test *)
                                  &buffer[pos+1]);
-         pos += (1 + ROUNDUP8(sizeof(struct pipe_depth_stencil_alpha_state)) / 8);
+         pos += (1 + ROUNDUP8(sizeof(struct cell_command_depth_stencil_alpha_test)) / 8);
          break;
       case CELL_CMD_STATE_SAMPLER:
          cmd_state_sampler((struct pipe_sampler_state *) &buffer[pos+1]);

src/gallium/drivers/cell/spu/spu_main.h

@@ -56,6 +56,17 @@ typedef union {
 #define TILE_STATUS_GETTING 5  /**< mfc_get() called but not yet arrived */
 
 
+struct spu_frag_test_results {
+   qword mask;
+   qword depth;
+   qword stencil;
+};
+
+typedef struct spu_frag_test_results (*frag_test_func)(qword frag_mask,
+    qword pixel_depth, qword pixel_stencil, qword frag_depth,
+    qword frag_alpha, qword facing);
+
+
 struct spu_framebuffer {
    void *color_start;              /**< addr of color surface in main memory */
    void *depth_start;              /**< addr of depth surface in main memory */
@@ -79,8 +90,9 @@ struct spu_global
    struct cell_init_info init;
 
    struct spu_framebuffer fb;
-   struct pipe_blend_state blend_stencil;
-   struct pipe_depth_stencil_alpha_state depth_stencil;
+   boolean read_depth;
+   boolean read_stencil;
+   frag_test_func frag_test;
    struct pipe_blend_state blend;
    struct pipe_sampler_state sampler[PIPE_MAX_SAMPLERS];
    struct cell_command_texture texture;

src/gallium/drivers/cell/spu/spu_per_fragment_op.c

@@ -0,0 +1,191 @@
+/*
+ * (C) Copyright IBM Corporation 2008
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * AUTHORS, COPYRIGHT HOLDERS, AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file spu_per_fragment_op.c
+ * SPU implementation various per-fragment operations.
+ *
+ * \author Ian Romanick <idr@us.ibm.com>
+ */
+
+#include "pipe/p_format.h"
+#include "spu_main.h"
+#include "spu_per_fragment_op.h"
+
+#define ZERO 0x80
+
+static void
+read_ds_quad(tile_t *buffer, unsigned x, unsigned y,
+             enum pipe_format depth_format, qword *depth,
+             qword *stencil)
+{
+   const int ix = x / 2;
+   const int iy = y / 2;
+
+   switch (depth_format) {
+   case PIPE_FORMAT_Z16_UNORM: {
+      qword *ptr = (qword *) &buffer->us8[iy][ix / 2];
+
+      const qword shuf_vec = (qword) {
+         ZERO, ZERO, 0, 1, ZERO, ZERO, 2, 3,
+         ZERO, ZERO, 4, 5, ZERO, ZERO, 6, 7
+      };
+
+
+      /* At even X values we want the first 4 shorts, and at odd X values we
+       * want the second 4 shorts.
+       */
+      qword bias = (qword) spu_splats((unsigned char) ((ix & 0x01) << 3));
+      qword bias_mask = si_fsmbi(0x3333);
+      qword sv = si_a(shuf_vec, si_and(bias_mask, bias));
+
+      *depth = si_shufb(*ptr, *ptr, sv);
+      *stencil = si_il(0);
+      break;
+   }
+
+
+   case PIPE_FORMAT_Z32_UNORM: {
+      qword *ptr = (qword *) &buffer->ui4[iy][ix];
+
+      *depth = *ptr;
+      *stencil = si_il(0);
+      break;
+   }
+      
+
+   case PIPE_FORMAT_Z24S8_UNORM: {
+      qword *ptr = (qword *) &buffer->ui4[iy][ix];
+      qword mask = si_fsmbi(0x7777);
+
+      *depth = si_and(*ptr, mask);
+      *stencil = si_rotmai(si_andc(*ptr, mask), -24);
+      break;
+   }
+
+
+   default:
+      assert(0);
+      break;
+   }
+}
+
+
+static void
+write_ds_quad(tile_t *buffer, unsigned x, unsigned y,
+              enum pipe_format depth_format,
+              qword depth, qword stencil)
+{
+   const int ix = x / 2;
+   const int iy = y / 2;
+
+   (void) stencil;
+
+   switch (depth_format) {
+   case PIPE_FORMAT_Z16_UNORM: {
+      qword *ptr = (qword *) &buffer->us8[iy][ix / 2];
+
+      qword sv = ((ix & 0x01) == 0) 
+          ? (qword) { 2, 3, 6, 7, 10, 11, 14, 15,
+                      24, 25, 26, 27, 28, 29, 30, 31 }
+          : (qword) { 16, 17, 18, 19, 20 , 21, 22, 23,
+                      2, 3, 6, 7, 10, 11, 14, 15 };
+      *ptr = si_shufb(depth, *ptr, sv);
+      break;
+   }
+
+
+   case PIPE_FORMAT_Z32_UNORM: {
+      qword *ptr = (qword *) &buffer->ui4[iy][ix];
+      *ptr = depth;
+      break;
+   }
+
+
+   case PIPE_FORMAT_Z24S8_UNORM: {
+      qword *ptr = (qword *) &buffer->ui4[iy][ix];
+      qword mask = si_fsmbi(0x7777);
+
+      stencil = si_rotmai(stencil, 24);
+      *ptr = si_selb(stencil, depth, mask);
+      break;
+   }
+
+
+   default:
+      assert(0);
+      break;
+   }
+}
+
+
+qword
+spu_do_depth_stencil(int x, int y,
+                     qword frag_mask, qword frag_depth, qword frag_alpha,
+                     qword facing)
+{
+   struct spu_frag_test_results  result;
+   qword pixel_depth;
+   qword pixel_stencil;
+
+   /* All of this preable code (everthing before the call to frag_test) should
+    * be generated on the PPU and upload to the SPU.
+    */
+   if (spu.read_depth || spu.read_stencil) {
+      read_ds_quad(&spu.ztile, x, y, spu.fb.depth_format,
+                   &pixel_depth, &pixel_stencil);
+   }
+   
+   switch (spu.fb.depth_format) {
+   case PIPE_FORMAT_Z16_UNORM:
+      frag_depth = si_fm(frag_depth, (qword)spu_splats((float)(0x0000ffffu)));
+      frag_depth = si_cfltu(frag_depth, 0);
+      break;
+   case PIPE_FORMAT_Z32_UNORM:
+      frag_depth = si_fm(frag_depth, (qword)spu_splats((float)(0xffffffffu)));
+      frag_depth = si_cfltu(frag_depth, 0);
+      break;
+   case PIPE_FORMAT_Z24S8_UNORM:
+      frag_depth = si_fm(frag_depth, (qword)spu_splats((float)(0x00ffffffu)));
+      frag_depth = si_cfltu(frag_depth, 0);
+      break;
+   default:
+      assert(0);
+      break;
+   }
+
+   result = (*spu.frag_test)(frag_mask, pixel_depth, pixel_stencil,
+                             frag_depth, frag_alpha, facing);
+
+
+   /* This code (everthing after the call to frag_test) should
+    * be generated on the PPU and upload to the SPU.
+    */
+   if (spu.read_depth || spu.read_stencil) {
+      write_ds_quad(&spu.ztile, x, y, spu.fb.depth_format,
+                    result.depth, result.stencil);
+   }
+
+   return result.mask;
+}

src/gallium/drivers/cell/spu/spu_per_fragment_op.h

@@ -0,0 +1,32 @@
+/*
+ * (C) Copyright IBM Corporation 2008
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * AUTHORS, COPYRIGHT HOLDERS, AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SPU_PER_FRAGMENT_OP
+#define SPU_PER_FRAGMENT_OP
+
+extern qword
+spu_do_depth_stencil(int x, int y, qword frag_mask, qword frag_depth,
+		     qword frag_alpha, qword facing);
+
+#endif /* SPU_PER_FRAGMENT_OP */

src/gallium/drivers/cell/spu/spu_render.c

@@ -98,7 +98,7 @@ my_tile(uint tx, uint ty)
 static INLINE void
 get_cz_tiles(uint tx, uint ty)
 {
-   if (spu.depth_stencil.depth.enabled) {
+   if (spu.read_depth) {
       if (spu.cur_ztile_status != TILE_STATUS_CLEAR) {
          //printf("SPU %u: getting Z tile %u, %u\n", spu.init.id, tx, ty);
          get_tile(tx, ty, &spu.ztile, TAG_READ_TILE_Z, 1);
@@ -153,7 +153,7 @@ static INLINE void
 wait_put_cz_tiles(void)
 {
    wait_on_mask(1 << TAG_WRITE_TILE_COLOR);
-   if (spu.depth_stencil.depth.enabled) {
+   if (spu.read_depth) {
       wait_on_mask(1 << TAG_WRITE_TILE_Z);
    }
 }

src/gallium/drivers/cell/spu/spu_tri.c

@@ -38,8 +38,7 @@
 #include "spu_texture.h"
 #include "spu_tile.h"
 #include "spu_tri.h"
-
-#include "spu_ztest.h"
+#include "spu_per_fragment_op.h"
 
 
 /** Masks are uint[4] vectors with each element being 0 or 0xffffffff */
@@ -264,16 +263,12 @@ do_depth_test(int x, int y, mask_t quadmask)
 
    zvals.v = eval_z((float) x, (float) y);
 
-   if (spu.fb.depth_format == PIPE_FORMAT_Z16_UNORM) {
-      int ix = (x - setup.cliprect_minx) / 4;
-      int iy = (y - setup.cliprect_miny) / 2;
-      mask = spu_z16_test_less(zvals.v, &spu.ztile.us8[iy][ix], x>>1, quadmask);
-   }
-   else {
-      int ix = (x - setup.cliprect_minx) / 2;
-      int iy = (y - setup.cliprect_miny) / 2;
-      mask = spu_z32_test_less(zvals.v, &spu.ztile.ui4[iy][ix], quadmask);
-   }
+   mask = (mask_t) spu_do_depth_stencil(x - setup.cliprect_minx,
+					y - setup.cliprect_miny,
+					(qword) quadmask, 
+					(qword) zvals.v,
+					(qword) spu_splats((unsigned char) 0x0ffu),
+					(qword) spu_splats((unsigned int) 0x01u));
 
    if (spu_extract(spu_orx(mask), 0))
       spu.cur_ztile_status = TILE_STATUS_DIRTY;
@@ -299,7 +294,7 @@ emit_quad( int x, int y, mask_t mask )
    sp->quad.first->run(sp->quad.first, &setup.quad);
 #else
 
-   if (spu.depth_stencil.depth.enabled) {
+   if (spu.read_depth) {
       mask = do_depth_test(x, y, mask);
    }
 
@@ -434,7 +429,7 @@ static void flush_spans( void )
    }
    ASSERT(spu.cur_ctile_status != TILE_STATUS_DEFINED);
 
-   if (spu.depth_stencil.depth.enabled) {
+   if (spu.read_depth) {
       if (spu.cur_ztile_status == TILE_STATUS_GETTING) {
          /* wait for mfc_get() to complete */
          //printf("SPU: %u: waiting for ztile\n", spu.init.id);

src/gallium/drivers/cell/spu/spu_ztest.h

@@ -1,135 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- * 
- **************************************************************************/
-
-
-/**
- * Zbuffer/depth test code.
- */
-
-
-#ifndef SPU_ZTEST_H
-#define SPU_ZTEST_H
-
-
-#ifdef __SPU__
-#include <spu_intrinsics.h>
-#endif
-
-
-
-/**
- * Perform Z testing for a 16-bit/value Z buffer.
- *
- * \param zvals  vector of four fragment zvalues as floats
- * \param zbuf   ptr to vector of ushort[8] zbuffer values.  Note that this
- *               contains the Z values for 2 quads, 8 pixels.
- * \param x      x coordinate of quad (only lsbit is significant)
- * \param inMask indicates which fragments in the quad are alive
- * \return new mask indicating which fragments are alive after ztest
- */
-static INLINE vector unsigned int
-spu_z16_test_less(vector float zvals, vector unsigned short *zbuf,
-                  uint x, vector unsigned int inMask)
-{
-#define ZERO 0x80
-   vector unsigned int zvals_ui4, zbuf_ui4, mask;
-
-   /* convert floats to uints in [0, 65535] */
-   zvals_ui4 = spu_convtu(zvals, 32); /* convert to [0, 2^32] */
-   zvals_ui4 = spu_rlmask(zvals_ui4, -16);  /* right shift 16 */
-
-   /* XXX this conditional could be removed with a bit of work */
-   if (x & 1) {
-      /* convert zbuffer values from ushorts to uints */
-      /* gather lower four ushorts */
-      zbuf_ui4 = spu_shuffle((vector unsigned int) *zbuf,
-                             (vector unsigned int) *zbuf,
-                             ((vector unsigned char) {
-                                ZERO, ZERO,  8,  9, ZERO, ZERO, 10, 11,
-                                ZERO, ZERO, 12, 13, ZERO, ZERO, 14, 15}));
-      /* mask = (zbuf_ui4 < zvals_ui4) ? ~0 : 0 */
-      mask = spu_cmpgt(zbuf_ui4, zvals_ui4);
-      /* mask &= inMask */
-      mask = spu_and(mask, inMask);
-      /* zbuf = mask ? zval : zbuf */
-      zbuf_ui4 = spu_sel(zbuf_ui4, zvals_ui4, mask);
-      /* convert zbuffer values from uints back to ushorts, preserve lower 4 */
-      *zbuf = (vector unsigned short)
-         spu_shuffle(zbuf_ui4, (vector unsigned int) *zbuf,
-                     ((vector unsigned char) {
-                        16, 17, 18, 19, 20, 21, 22, 23,
-                        2, 3, 6, 7, 10, 11, 14, 15}));
-   }
-   else {
-      /* convert zbuffer values from ushorts to uints */
-      /* gather upper four ushorts */
-      zbuf_ui4 = spu_shuffle((vector unsigned int) *zbuf,
-                             (vector unsigned int) *zbuf,
-                             ((vector unsigned char) {
-                                ZERO, ZERO, 0, 1, ZERO, ZERO, 2, 3,
-                                ZERO, ZERO, 4, 5, ZERO, ZERO, 6, 7}));
-      /* mask = (zbuf_ui4 < zvals_ui4) ? ~0 : 0 */
-      mask = spu_cmpgt(zbuf_ui4, zvals_ui4);
-      /* mask &= inMask */
-      mask = spu_and(mask, inMask);
-      /* zbuf = mask ? zval : zbuf */
-      zbuf_ui4 = spu_sel(zbuf_ui4, zvals_ui4, mask);
-      /* convert zbuffer values from uints back to ushorts, preserve upper 4 */
-      *zbuf = (vector unsigned short)
-         spu_shuffle(zbuf_ui4, (vector unsigned int) *zbuf,
-                     ((vector unsigned char) {
-                        2, 3, 6, 7, 10, 11, 14, 15,
-                        24, 25, 26, 27, 28, 29, 30, 31}));
-   }
-   return mask;
-#undef ZERO
-}
-
-
-/**
- * As above, but Zbuffer values as 32-bit uints
- */
-static INLINE vector unsigned int
-spu_z32_test_less(vector float zvals, vector unsigned int *zbuf_ptr,
-                  vector unsigned int inMask)
-{
-   vector unsigned int zvals_ui4, mask, zbuf = *zbuf_ptr;
-
-   /* convert floats to uints in [0, 0xffffffff] */
-   zvals_ui4 = spu_convtu(zvals, 32);
-   /* mask = (zbuf < zvals_ui4) ? ~0 : 0 */
-   mask = spu_cmpgt(zbuf, zvals_ui4);
-   /* mask &= inMask */
-   mask = spu_and(mask, inMask);
-   /* zbuf = mask ? zval : zbuf */
-   *zbuf_ptr = spu_sel(zbuf, zvals_ui4, mask);
-
-   return mask;
-}
-
-
-#endif /* SPU_ZTEST_H */