translate Mesa programs to TGSI programs (formerly in st_atom_[fv]s.c)

1 files changed, 413 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
new file mode 100644
index 0000000000..88c02e5b75
--- /dev/null
+++ b/src/mesa/state_tracker/st_program.c
@@ -0,0 +1,413 @@
+/**************************************************************************
+ * 
+ * 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.
+ * 
+ **************************************************************************/
+ /*
+  * Authors:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  *   Brian Paul
+  */
+
+
+#include "shader/prog_parameter.h"
+#include "shader/prog_print.h"
+#include "tnl/t_vp_build.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_winsys.h"
+#include "pipe/tgsi/mesa/mesa_to_tgsi.h"
+#include "pipe/tgsi/exec/tgsi_core.h"
+
+#include "st_context.h"
+#include "st_cache.h"
+#include "st_atom.h"
+#include "st_program.h"
+
+
+#define TGSI_DEBUG 1
+
+
+/**
+ * Translate a Mesa vertex shader into a TGSI shader.
+ * \param outputMapping  to map vertex program output registers to TGSI
+ *                       output slots
+ * \param tokensOut  destination for TGSI tokens
+ * \return  pointer to cached pipe_shader object.
+ */
+const struct cso_vertex_shader *
+st_translate_vertex_program(struct st_context *st,
+                            struct st_vertex_program *stvp,
+                            const GLuint outputMapping[],
+                            struct tgsi_token *tokensOut,
+                            GLuint maxTokens)
+{
+   GLuint defaultOutputMapping[VERT_RESULT_MAX];
+   struct pipe_shader_state vs;
+   const struct cso_vertex_shader *cso;
+   GLuint attr, i;
+
+   memset(&vs, 0, sizeof(vs));
+
+   /*
+    * Determine number of inputs, the mappings between VERT_ATTRIB_x
+    * and TGSI generic input indexes, plus input attrib semantic info.
+    */
+   for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) {
+      if (stvp->Base.Base.InputsRead & (1 << attr)) {
+         const GLuint slot = vs.num_inputs;
+
+         vs.num_inputs++;
+
+         stvp->input_to_index[attr] = slot;
+         stvp->index_to_input[slot] = attr;
+
+         switch (attr) {
+         case VERT_ATTRIB_POS:
+            vs.input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
+            vs.input_semantic_index[slot] = 0;
+            break;
+         case VERT_ATTRIB_WEIGHT:
+            /* fall-through */
+         case VERT_ATTRIB_NORMAL:
+            /* just label as a generic */
+            vs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            vs.input_semantic_index[slot] = 0;
+            break;
+         case VERT_ATTRIB_COLOR0:
+            vs.input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            vs.input_semantic_index[slot] = 0;
+            break;
+         case VERT_ATTRIB_COLOR1:
+            vs.input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            vs.input_semantic_index[slot] = 1;
+            break;
+         case VERT_ATTRIB_FOG:
+            vs.input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
+            vs.input_semantic_index[slot] = 0;
+            break;
+         case VERT_ATTRIB_TEX0:
+         case VERT_ATTRIB_TEX1:
+         case VERT_ATTRIB_TEX2:
+         case VERT_ATTRIB_TEX3:
+         case VERT_ATTRIB_TEX4:
+         case VERT_ATTRIB_TEX5:
+         case VERT_ATTRIB_TEX6:
+         case VERT_ATTRIB_TEX7:
+            vs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            vs.input_semantic_index[slot] = attr - VERT_ATTRIB_TEX0;
+            break;
+         case VERT_ATTRIB_GENERIC0:
+         case VERT_ATTRIB_GENERIC1:
+         case VERT_ATTRIB_GENERIC2:
+         case VERT_ATTRIB_GENERIC3:
+         case VERT_ATTRIB_GENERIC4:
+         case VERT_ATTRIB_GENERIC5:
+         case VERT_ATTRIB_GENERIC6:
+         case VERT_ATTRIB_GENERIC7:
+            assert(attr < VERT_ATTRIB_MAX);
+            vs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            vs.input_semantic_index[slot] = attr - VERT_ATTRIB_GENERIC0;
+            break;
+         default:
+            assert(0);
+         }
+      }
+   }
+
+   /* initialize output semantics to defaults */
+   for (i = 0; i < PIPE_MAX_SHADER_OUTPUTS; i++) {
+      vs.output_semantic_name[i] = TGSI_SEMANTIC_GENERIC;
+      vs.output_semantic_index[i] = 0;
+   }
+
+   /*
+    * Determine number of outputs, the (default) output register
+    * mapping and the semantic information for each output.
+    */
+   for (attr = 0; attr < VERT_RESULT_MAX; attr++) {
+      if (stvp->Base.Base.OutputsWritten & (1 << attr)) {
+         GLuint slot;
+
+         if (outputMapping) {
+            slot = outputMapping[attr];
+            assert(slot != ~0);
+         }
+         else {
+            slot = vs.num_outputs;
+            vs.num_outputs++;
+            defaultOutputMapping[attr] = slot;
+         }
+
+         /*
+         printf("Output %u -> slot %u\n", attr, slot);
+         */
+
+         switch (attr) {
+         case VERT_RESULT_HPOS:
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
+            vs.output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_COL0:
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            vs.output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_COL1:
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            vs.output_semantic_index[slot] = 1;
+            break;
+         case VERT_RESULT_BFC0:
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
+            vs.output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_BFC1:
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
+            vs.output_semantic_index[slot] = 1;
+            break;
+         case VERT_RESULT_FOGC:
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_FOG;
+            vs.output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_PSIZ:
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE;
+            vs.output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_EDGE:
+            assert(0);
+            break;
+         case VERT_RESULT_TEX0:
+         case VERT_RESULT_TEX1:
+         case VERT_RESULT_TEX2:
+         case VERT_RESULT_TEX3:
+         case VERT_RESULT_TEX4:
+         case VERT_RESULT_TEX5:
+         case VERT_RESULT_TEX6:
+         case VERT_RESULT_TEX7:
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            vs.output_semantic_index[slot] = attr - VERT_RESULT_TEX0;
+            break;
+         case VERT_RESULT_VAR0:
+            /* fall-through */
+         default:
+            assert(attr - VERT_RESULT_VAR0 < MAX_VARYING);
+            vs.output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            vs.output_semantic_index[slot] = attr - VERT_RESULT_VAR0;
+         }
+      }
+   }
+
+
+   if (outputMapping) {
+      /* find max output slot referenced to compute vs.num_outputs */
+      GLuint maxSlot = 0;
+      for (attr = 0; attr < VERT_RESULT_MAX; attr++) {
+         if (outputMapping[attr] != ~0 && outputMapping[attr] > maxSlot)
+            maxSlot = outputMapping[attr];
+      }
+      vs.num_outputs = maxSlot + 1;
+   }
+   else {
+      outputMapping = defaultOutputMapping;
+   }
+
+   /* XXX: fix static allocation of tokens:
+    */
+   tgsi_mesa_compile_vp_program( &stvp->Base,
+                                 /* inputs */
+                                 vs.num_inputs,
+                                 stvp->input_to_index,
+                                 vs.input_semantic_name,
+                                 vs.input_semantic_index,
+                                 /* outputs */
+                                 vs.num_outputs,
+                                 outputMapping,
+                                 vs.output_semantic_name,
+                                 vs.output_semantic_index,
+                                 /* tokenized result */
+                                 tokensOut, maxTokens);
+
+   vs.tokens = tokensOut;
+   cso = st_cached_vs_state(st, &vs);
+   stvp->vs = cso;
+
+   if (TGSI_DEBUG)
+      tgsi_dump( tokensOut, 0 );
+
+#if defined(USE_X86_ASM) || defined(SLANG_X86)
+   if (stvp->sse2_program.csr == stvp->sse2_program.store)
+      tgsi_emit_sse2( tokensOut, &stvp->sse2_program );
+
+   if (!cso->state.executable)
+      ((struct cso_vertex_shader*)cso)->state.executable = (void *) x86_get_func( &stvp->sse2_program );
+#endif
+
+   return cso;
+}
+
+
+
+/**
+ * Translate a Mesa fragment shader into a TGSI shader.
+ * \param inputMapping  to map fragment program input registers to TGSI
+ *                      input slots
+ * \param tokensOut  destination for TGSI tokens
+ * \return  pointer to cached pipe_shader object.
+ */
+const struct cso_fragment_shader *
+st_translate_fragment_program(struct st_context *st,
+                              struct st_fragment_program *stfp,
+                              const GLuint inputMapping[],
+                              struct tgsi_token *tokensOut,
+                              GLuint maxTokens)
+{
+   GLuint outputMapping[FRAG_RESULT_MAX];
+   GLuint defaultInputMapping[FRAG_ATTRIB_MAX];
+   struct pipe_shader_state fs;
+   const struct cso_fragment_shader *cso;
+   GLuint interpMode[16];  /* XXX size? */
+   GLuint attr;
+   GLbitfield inputsRead = stfp->Base.Base.InputsRead;
+
+   /* Check if all fragment programs need the fragment position (in order
+    * to do perspective-corrected interpolation).
+    */
+   /* XXX temporary! */
+   if (st->pipe->get_param(st->pipe, PIPE_PARAM_FS_NEEDS_POS))
+      inputsRead |= FRAG_BIT_WPOS;
+
+   memset(&fs, 0, sizeof(fs));
+
+   /*
+    * Convert Mesa program inputs to TGSI input register semantics.
+    */
+   for (attr = 0; attr < FRAG_ATTRIB_MAX; attr++) {
+      if (inputsRead & (1 << attr)) {
+         const GLuint slot = fs.num_inputs;
+
+         fs.num_inputs++;
+
+         defaultInputMapping[attr] = slot;
+
+         switch (attr) {
+         case FRAG_ATTRIB_WPOS:
+            fs.input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
+            fs.input_semantic_index[slot] = 0;
+            interpMode[slot] = TGSI_INTERPOLATE_CONSTANT;
+            break;
+         case FRAG_ATTRIB_COL0:
+            fs.input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            fs.input_semantic_index[slot] = 0;
+            interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+            break;
+         case FRAG_ATTRIB_COL1:
+            fs.input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            fs.input_semantic_index[slot] = 1;
+            interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+            break;
+         case FRAG_ATTRIB_FOGC:
+            fs.input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
+            fs.input_semantic_index[slot] = 0;
+            interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
+            break;
+         case FRAG_ATTRIB_TEX0:
+         case FRAG_ATTRIB_TEX1:
+         case FRAG_ATTRIB_TEX2:
+         case FRAG_ATTRIB_TEX3:
+         case FRAG_ATTRIB_TEX4:
+         case FRAG_ATTRIB_TEX5:
+         case FRAG_ATTRIB_TEX6:
+         case FRAG_ATTRIB_TEX7:
+            fs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            fs.input_semantic_index[slot] = attr - FRAG_ATTRIB_TEX0;
+            interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
+            break;
+         case FRAG_ATTRIB_VAR0:
+            /* fall-through */
+         default:
+            fs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            fs.input_semantic_index[slot] = attr - FRAG_ATTRIB_VAR0;
+            interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
+         }
+      }
+   }
+
+   /*
+    * Semantics for outputs
+    */
+   for (attr = 0; attr < FRAG_RESULT_MAX; attr++) {
+      if (stfp->Base.Base.OutputsWritten & (1 << attr)) {
+         switch (attr) {
+         case FRAG_RESULT_DEPR:
+            fs.output_semantic_name[fs.num_outputs] = TGSI_SEMANTIC_POSITION;
+            outputMapping[attr] = fs.num_outputs;
+            break;
+         case FRAG_RESULT_COLR:
+            fs.output_semantic_name[fs.num_outputs] = TGSI_SEMANTIC_COLOR;
+            outputMapping[attr] = fs.num_outputs;
+            break;
+         default:
+            assert(0);
+         }
+         fs.num_outputs++;
+      }
+   }
+
+   if (!inputMapping)
+      inputMapping = defaultInputMapping;
+
+   /* XXX: fix static allocation of tokens:
+    */
+   tgsi_mesa_compile_fp_program( &stfp->Base,
+                                 /* inputs */
+                                 fs.num_inputs,
+                                 inputMapping,
+                                 fs.input_semantic_name,
+                                 fs.input_semantic_index,
+                                 interpMode,
+                                 /* outputs */
+                                 outputMapping,
+                                 /* tokenized result */
+                                 tokensOut, maxTokens);
+
+
+   fs.tokens = tokensOut;
+
+   cso = st_cached_fs_state(st, &fs);
+   stfp->fs = cso;
+
+   if (TGSI_DEBUG)
+      tgsi_dump( tokensOut, 0/*TGSI_DUMP_VERBOSE*/ );
+
+#if defined(USE_X86_ASM) || defined(SLANG_X86)
+   if (stfp->sse2_program.csr == stfp->sse2_program.store)
+      tgsi_emit_sse2_fs( tokensOut, &stfp->sse2_program );
+
+   if (!cso->state.executable)
+      ((struct cso_fragment_shader*)cso)->state.executable = (void *) x86_get_func( &stfp->sse2_program );
+#endif
+
+   return cso;
+}
+