svga: Add svga driver

1 files changed, 385 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c b/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c
new file mode 100644
index 00000000000..08e7dfb117c
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c
@@ -0,0 +1,385 @@
+/**********************************************************
+ * Copyright 2008-2009 VMware, Inc.  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, sublicense, 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 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
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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.
+ *
+ **********************************************************/
+
+
+#include "pipe/p_shader_tokens.h"
+#include "tgsi/tgsi_parse.h"
+#include "util/u_memory.h"
+
+#include "svga_tgsi_emit.h"
+#include "svga_context.h"
+
+static boolean translate_vs_ps_semantic( struct tgsi_declaration_semantic semantic,
+                                         unsigned *usage,
+                                         unsigned *idx )
+{
+   switch (semantic.SemanticName) {
+   case TGSI_SEMANTIC_POSITION:  
+      *idx = semantic.SemanticIndex;
+      *usage = SVGA3D_DECLUSAGE_POSITION;
+      break;
+   case TGSI_SEMANTIC_COLOR:     
+
+      *idx = semantic.SemanticIndex;
+      *usage = SVGA3D_DECLUSAGE_COLOR;
+      break;
+   case TGSI_SEMANTIC_BCOLOR:
+      *idx = semantic.SemanticIndex + 2; /* sharing with COLOR */
+      *usage = SVGA3D_DECLUSAGE_COLOR;
+      break;
+   case TGSI_SEMANTIC_FOG:       
+      *idx = 0;
+      assert(semantic.SemanticIndex == 0);
+      *usage = SVGA3D_DECLUSAGE_TEXCOORD;
+      break;
+   case TGSI_SEMANTIC_PSIZE:     
+      *idx = semantic.SemanticIndex;
+      *usage = SVGA3D_DECLUSAGE_PSIZE;
+      break;
+   case TGSI_SEMANTIC_GENERIC:   
+      *idx = semantic.SemanticIndex + 1; /* texcoord[0] is reserved for fog */
+      *usage = SVGA3D_DECLUSAGE_TEXCOORD;
+      break;
+   case TGSI_SEMANTIC_NORMAL:    
+      *idx = semantic.SemanticIndex;
+      *usage = SVGA3D_DECLUSAGE_NORMAL;
+      break;
+   default:
+      assert(0);
+      *usage = SVGA3D_DECLUSAGE_TEXCOORD;
+      *idx = 0;
+      return FALSE;
+   }
+
+   return TRUE;
+}
+
+
+static boolean emit_decl( struct svga_shader_emitter *emit,
+                          SVGA3dShaderDestToken reg,
+                          unsigned usage, 
+                          unsigned index )
+{
+   SVGA3DOpDclArgs dcl;
+   SVGA3dShaderInstToken opcode;
+
+   opcode = inst_token( SVGA3DOP_DCL );
+   dcl.values[0] = 0;
+   dcl.values[1] = 0;
+
+   dcl.dst = reg;
+   dcl.usage = usage;
+   dcl.index = index;
+   dcl.values[0] |= 1<<31;
+
+   return  (emit_instruction(emit, opcode) &&
+            svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values)));
+}
+
+static boolean emit_vface_decl( struct svga_shader_emitter *emit )
+{
+   if (!emit->emitted_vface) {
+      SVGA3dShaderDestToken reg =
+         dst_register( SVGA3DREG_MISCTYPE,
+                       SVGA3DMISCREG_FACE );
+
+      if (!emit_decl( emit, reg, 0, 0 ))
+         return FALSE;
+
+      emit->emitted_vface = TRUE;
+   }
+   return TRUE;
+}
+
+static boolean ps30_input( struct svga_shader_emitter *emit,
+                           struct tgsi_declaration_semantic semantic,
+                           unsigned idx )
+{
+   unsigned usage, index;
+   SVGA3dShaderDestToken reg;
+
+   if (semantic.SemanticName == TGSI_SEMANTIC_POSITION) {
+      emit->input_map[idx] = src_register( SVGA3DREG_MISCTYPE,
+                                           SVGA3DMISCREG_POSITION );
+
+      emit->input_map[idx].base.swizzle = TRANSLATE_SWIZZLE( TGSI_SWIZZLE_X,
+                                                             TGSI_SWIZZLE_Y,
+                                                             TGSI_SWIZZLE_Y,
+                                                             TGSI_SWIZZLE_Y );
+
+      reg = writemask( dst(emit->input_map[idx]),
+                       TGSI_WRITEMASK_XY );
+
+      return emit_decl( emit, reg, 0, 0 );
+   }
+   else if (emit->key.fkey.light_twoside &&
+            (semantic.SemanticName == TGSI_SEMANTIC_COLOR)) {
+
+      if (!translate_vs_ps_semantic( semantic, &usage, &index ))
+         return FALSE;
+
+      emit->internal_color_idx[emit->internal_color_count] = idx;
+      emit->input_map[idx] = src_register( SVGA3DREG_INPUT, emit->ps30_input_count );
+      emit->ps30_input_count++;
+      emit->internal_color_count++;
+
+      reg = dst( emit->input_map[idx] );
+
+      if (!emit_decl( emit, reg, usage, index ))
+         return FALSE;
+
+      semantic.SemanticName = TGSI_SEMANTIC_BCOLOR;
+      if (!translate_vs_ps_semantic( semantic, &usage, &index ))
+         return FALSE;
+
+      reg = dst_register( SVGA3DREG_INPUT, emit->ps30_input_count++ );
+
+      if (!emit_decl( emit, reg, usage, index ))
+         return FALSE;
+
+      if (!emit_vface_decl( emit ))
+         return FALSE;
+
+      return TRUE;
+   }
+   else if (semantic.SemanticName == TGSI_SEMANTIC_FACE) {
+      if (!emit_vface_decl( emit ))
+         return FALSE;
+      emit->emit_frontface = TRUE;
+      emit->internal_frontface_idx = idx;
+      return TRUE;
+   }
+   else {
+
+      if (!translate_vs_ps_semantic( semantic, &usage, &index ))
+         return FALSE;
+
+      emit->input_map[idx] = src_register( SVGA3DREG_INPUT, emit->ps30_input_count++ );
+      reg = dst( emit->input_map[idx] );
+
+      return emit_decl( emit, reg, usage, index );
+   }
+
+}
+
+
+/* PS output registers are the same as 2.0
+ */
+static boolean ps30_output( struct svga_shader_emitter *emit,
+                            struct tgsi_declaration_semantic semantic,
+                            unsigned idx )
+{
+   SVGA3dShaderDestToken reg;
+
+   switch (semantic.SemanticName) {
+   case TGSI_SEMANTIC_COLOR:
+      emit->output_map[idx] = dst_register( SVGA3DREG_COLOROUT, 
+                                            semantic.SemanticIndex );
+      break;
+   case TGSI_SEMANTIC_POSITION:
+      emit->output_map[idx] = dst_register( SVGA3DREG_TEMP,
+                                            emit->nr_hw_temp++ );
+      emit->temp_pos = emit->output_map[idx];
+      emit->true_pos = dst_register( SVGA3DREG_DEPTHOUT, 
+                                     semantic.SemanticIndex );
+      break;
+   default:
+      assert(0);
+      reg = dst_register( SVGA3DREG_COLOROUT, 0 );
+      break;
+   }
+
+   return TRUE;
+}
+
+
+/* We still make up the input semantics the same as in 2.0
+ */
+static boolean vs30_input( struct svga_shader_emitter *emit,
+                           struct tgsi_declaration_semantic semantic,
+                           unsigned idx )
+{
+   SVGA3DOpDclArgs dcl;
+   SVGA3dShaderInstToken opcode;
+   unsigned usage, index;
+
+   opcode = inst_token( SVGA3DOP_DCL );
+   dcl.values[0] = 0;
+   dcl.values[1] = 0;
+
+   if (emit->key.vkey.zero_stride_vertex_elements & (1 << idx)) {
+      unsigned i;
+      unsigned offset = 0;
+      unsigned start_idx = emit->info.file_max[TGSI_FILE_CONSTANT] + 1;
+      /* adjust for prescale constants */
+      start_idx += emit->key.vkey.need_prescale ? 2 : 0;
+      /* compute the offset from the start of zero stride constants */
+      for (i = 0; i < PIPE_MAX_ATTRIBS && i < idx; ++i) {
+         if (emit->key.vkey.zero_stride_vertex_elements & (1<<i))
+            ++offset;
+      }
+      emit->input_map[idx] = src_register( SVGA3DREG_CONST,
+                                           start_idx + offset );
+   } else {
+      emit->input_map[idx] = src_register( SVGA3DREG_INPUT, idx );
+      dcl.dst = dst_register( SVGA3DREG_INPUT, idx );
+
+      assert(dcl.dst.reserved0);
+
+      svga_generate_vdecl_semantics( idx, &usage, &index );
+
+      dcl.usage = usage;
+      dcl.index = index;
+      dcl.values[0] |= 1<<31;
+
+      return  (emit_instruction(emit, opcode) &&
+               svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values)));
+   }
+   return TRUE;
+}
+
+/* VS3.0 outputs have proper declarations and semantic info for
+ * matching against PS inputs.
+ */
+static boolean vs30_output( struct svga_shader_emitter *emit,
+                         struct tgsi_declaration_semantic semantic,
+                         unsigned idx )
+{
+   SVGA3DOpDclArgs dcl;
+   SVGA3dShaderInstToken opcode;
+   unsigned usage, index;
+
+   opcode = inst_token( SVGA3DOP_DCL );
+   dcl.values[0] = 0;
+   dcl.values[1] = 0;
+
+   if (!translate_vs_ps_semantic( semantic, &usage, &index ))
+      return FALSE;
+
+   dcl.dst = dst_register( SVGA3DREG_OUTPUT, idx );
+   dcl.usage = usage;
+   dcl.index = index;
+   dcl.values[0] |= 1<<31;
+
+   if (semantic.SemanticName == TGSI_SEMANTIC_POSITION) {
+      assert(idx == 0);
+      emit->output_map[idx] = dst_register( SVGA3DREG_TEMP,
+                                            emit->nr_hw_temp++ );
+      emit->temp_pos = emit->output_map[idx];
+      emit->true_pos = dcl.dst;
+   }
+   else if (semantic.SemanticName == TGSI_SEMANTIC_PSIZE) {
+      emit->output_map[idx] = dst_register( SVGA3DREG_TEMP,
+                                            emit->nr_hw_temp++ );
+      emit->temp_psiz = emit->output_map[idx];
+
+      /* This has the effect of not declaring psiz (below) and not 
+       * emitting the final MOV to true_psiz in the postamble.
+       */
+      if (!emit->key.vkey.allow_psiz)
+         return TRUE;
+
+      emit->true_psiz = dcl.dst;
+   }
+   else {
+      emit->output_map[idx] = dcl.dst;
+   }
+
+
+   return  (emit_instruction(emit, opcode) &&
+            svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values)));
+}
+
+static boolean ps30_sampler( struct svga_shader_emitter *emit,
+                          struct tgsi_declaration_semantic semantic,
+                          unsigned idx )
+{
+   SVGA3DOpDclArgs dcl;
+   SVGA3dShaderInstToken opcode;
+
+   opcode = inst_token( SVGA3DOP_DCL );
+   dcl.values[0] = 0;
+   dcl.values[1] = 0;
+
+   dcl.dst = dst_register( SVGA3DREG_SAMPLER, idx );
+   dcl.type = svga_tgsi_sampler_type( emit, idx );
+   dcl.values[0] |= 1<<31;
+
+   return  (emit_instruction(emit, opcode) &&
+            svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values)));
+}
+
+
+boolean svga_translate_decl_sm30( struct svga_shader_emitter *emit,
+                             const struct tgsi_full_declaration *decl )
+{
+   unsigned first = decl->DeclarationRange.First;
+   unsigned last = decl->DeclarationRange.Last;
+   unsigned semantic = 0;
+   unsigned semantic_idx = 0;
+   unsigned idx;
+
+   if (decl->Declaration.Semantic) {
+      semantic = decl->Semantic.SemanticName;
+      semantic_idx = decl->Semantic.SemanticIndex;
+   }
+
+   for( idx = first; idx <= last; idx++ ) {
+      boolean ok;
+
+      switch (decl->Declaration.File) {
+      case TGSI_FILE_SAMPLER:
+         assert (emit->unit == PIPE_SHADER_FRAGMENT);
+         ok = ps30_sampler( emit, decl->Semantic, idx );
+         break;
+
+      case TGSI_FILE_INPUT:
+         if (emit->unit == PIPE_SHADER_VERTEX)
+            ok = vs30_input( emit, decl->Semantic, idx );
+         else
+            ok = ps30_input( emit, decl->Semantic, idx );
+         break;
+
+      case TGSI_FILE_OUTPUT:
+         if (emit->unit == PIPE_SHADER_VERTEX)
+            ok = vs30_output( emit, decl->Semantic, idx );
+         else
+            ok = ps30_output( emit, decl->Semantic, idx );
+         break;
+
+      default:
+         /* don't need to declare other vars */
+         ok = TRUE;
+      }
+
+      if (!ok)
+         return FALSE;
+   }
+
+   return TRUE;
+}
+
+
+