Merge branch 'shader-file-reorg'

1. Move all GL entrypoint functions and files into src/mesa/main/
This includes the ARB vp/vp, NV vp/fp, ATI fragshader and GLSL bits
that were in src/mesa/shader/

2. Move src/mesa/shader/slang/ to src/mesa/slang/ to reduce the tree depth

3. Rename src/mesa/shader/ to src/mesa/program/ since all the
remaining files are concerned with GPU programs.

4. Misc code refactoring.  In particular, I got rid of most of the
GLSL-related ctx->Driver hook functions.  None of the drivers used
them.

Conflicts:
	src/mesa/drivers/dri/i965/brw_context.c

1 files changed, 217 insertions, 0 deletions

diff --git a/src/mesa/program/arbprogparse.c b/src/mesa/program/arbprogparse.c
new file mode 100644
index 0000000000..6373529e4e
--- /dev/null
+++ b/src/mesa/program/arbprogparse.c
@@ -0,0 +1,217 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   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
+ * BRIAN PAUL 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.
+ */
+
+#define DEBUG_PARSING 0
+
+/**
+ * \file arbprogparse.c
+ * ARB_*_program parser core
+ * \author Karl Rasche
+ */
+
+/**
+Notes on program parameters, etc.
+
+The instructions we emit will use six kinds of source registers:
+
+  PROGRAM_INPUT      - input registers
+  PROGRAM_TEMPORARY  - temp registers
+  PROGRAM_ADDRESS    - address/indirect register
+  PROGRAM_SAMPLER    - texture sampler
+  PROGRAM_CONSTANT   - indexes into program->Parameters, a known constant/literal
+  PROGRAM_STATE_VAR  - indexes into program->Parameters, and may actually be:
+                       + a state variable, like "state.fog.color", or
+                       + a pointer to a "program.local[k]" parameter, or
+                       + a pointer to a "program.env[k]" parameter
+
+Basically, all the program.local[] and program.env[] values will get mapped
+into the unified gl_program->Parameters array.  This solves the problem of
+having three separate program parameter arrays.
+*/
+
+
+#include "main/glheader.h"
+#include "main/imports.h"
+#include "main/context.h"
+#include "main/mtypes.h"
+#include "arbprogparse.h"
+#include "programopt.h"
+#include "prog_parameter.h"
+#include "prog_statevars.h"
+#include "prog_instruction.h"
+#include "program_parser.h"
+
+
+void
+_mesa_parse_arb_fragment_program(GLcontext* ctx, GLenum target,
+                                 const GLvoid *str, GLsizei len,
+                                 struct gl_fragment_program *program)
+{
+   struct gl_program prog;
+   struct asm_parser_state state;
+   GLuint i;
+
+   ASSERT(target == GL_FRAGMENT_PROGRAM_ARB);
+
+   memset(&prog, 0, sizeof(prog));
+   memset(&state, 0, sizeof(state));
+   state.prog = &prog;
+
+   if (!_mesa_parse_arb_program(ctx, target, (const GLubyte*) str, len,
+				&state)) {
+      /* Error in the program. Just return. */
+      return;
+   }
+
+   if (program->Base.String != NULL)
+      free(program->Base.String);
+
+   /* Copy the relevant contents of the arb_program struct into the
+    * fragment_program struct.
+    */
+   program->Base.String          = prog.String;
+   program->Base.NumInstructions = prog.NumInstructions;
+   program->Base.NumTemporaries  = prog.NumTemporaries;
+   program->Base.NumParameters   = prog.NumParameters;
+   program->Base.NumAttributes   = prog.NumAttributes;
+   program->Base.NumAddressRegs  = prog.NumAddressRegs;
+   program->Base.NumNativeInstructions = prog.NumNativeInstructions;
+   program->Base.NumNativeTemporaries = prog.NumNativeTemporaries;
+   program->Base.NumNativeParameters = prog.NumNativeParameters;
+   program->Base.NumNativeAttributes = prog.NumNativeAttributes;
+   program->Base.NumNativeAddressRegs = prog.NumNativeAddressRegs;
+   program->Base.NumAluInstructions   = prog.NumAluInstructions;
+   program->Base.NumTexInstructions   = prog.NumTexInstructions;
+   program->Base.NumTexIndirections   = prog.NumTexIndirections;
+   program->Base.NumNativeAluInstructions = prog.NumAluInstructions;
+   program->Base.NumNativeTexInstructions = prog.NumTexInstructions;
+   program->Base.NumNativeTexIndirections = prog.NumTexIndirections;
+   program->Base.InputsRead      = prog.InputsRead;
+   program->Base.OutputsWritten  = prog.OutputsWritten;
+   for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++) {
+      program->Base.TexturesUsed[i] = prog.TexturesUsed[i];
+      if (prog.TexturesUsed[i])
+         program->Base.SamplersUsed |= (1 << i);
+   }
+   program->Base.ShadowSamplers = prog.ShadowSamplers;
+   switch (state.option.Fog) {
+   case OPTION_FOG_EXP:    program->FogOption = GL_EXP;    break;
+   case OPTION_FOG_EXP2:   program->FogOption = GL_EXP2;   break;
+   case OPTION_FOG_LINEAR: program->FogOption = GL_LINEAR; break;
+   default:                program->FogOption = GL_NONE;   break;
+   }
+   program->OriginUpperLeft = state.option.OriginUpperLeft;
+   program->PixelCenterInteger = state.option.PixelCenterInteger;
+
+   program->UsesKill            = state.fragment.UsesKill;
+
+   if (program->FogOption)
+      program->Base.InputsRead |= FRAG_BIT_FOGC;
+
+   if (program->Base.Instructions)
+      free(program->Base.Instructions);
+   program->Base.Instructions = prog.Instructions;
+
+   if (program->Base.Parameters)
+      _mesa_free_parameter_list(program->Base.Parameters);
+   program->Base.Parameters    = prog.Parameters;
+
+   /* Append fog instructions now if the program has "OPTION ARB_fog_exp"
+    * or similar.  We used to leave this up to drivers, but it appears
+    * there's no hardware that wants to do fog in a discrete stage separate
+    * from the fragment shader.
+    */
+   if (program->FogOption != GL_NONE) {
+      _mesa_append_fog_code(ctx, program);
+      program->FogOption = GL_NONE;
+   }
+
+#if DEBUG_FP
+   printf("____________Fragment program %u ________\n", program->Base.Id);
+   _mesa_print_program(&program->Base);
+#endif
+}
+
+
+
+/**
+ * Parse the vertex program string.  If success, update the given
+ * vertex_program object with the new program.  Else, leave the vertex_program
+ * object unchanged.
+ */
+void
+_mesa_parse_arb_vertex_program(GLcontext *ctx, GLenum target,
+			       const GLvoid *str, GLsizei len,
+			       struct gl_vertex_program *program)
+{
+   struct gl_program prog;
+   struct asm_parser_state state;
+
+   ASSERT(target == GL_VERTEX_PROGRAM_ARB);
+
+   memset(&prog, 0, sizeof(prog));
+   memset(&state, 0, sizeof(state));
+   state.prog = &prog;
+
+   if (!_mesa_parse_arb_program(ctx, target, (const GLubyte*) str, len,
+				&state)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glProgramString(bad program)");
+      return;
+   }
+
+   if (program->Base.String != NULL)
+      free(program->Base.String);
+
+   /* Copy the relevant contents of the arb_program struct into the 
+    * vertex_program struct.
+    */
+   program->Base.String          = prog.String;
+   program->Base.NumInstructions = prog.NumInstructions;
+   program->Base.NumTemporaries  = prog.NumTemporaries;
+   program->Base.NumParameters   = prog.NumParameters;
+   program->Base.NumAttributes   = prog.NumAttributes;
+   program->Base.NumAddressRegs  = prog.NumAddressRegs;
+   program->Base.NumNativeInstructions = prog.NumNativeInstructions;
+   program->Base.NumNativeTemporaries = prog.NumNativeTemporaries;
+   program->Base.NumNativeParameters = prog.NumNativeParameters;
+   program->Base.NumNativeAttributes = prog.NumNativeAttributes;
+   program->Base.NumNativeAddressRegs = prog.NumNativeAddressRegs;
+   program->Base.InputsRead     = prog.InputsRead;
+   program->Base.OutputsWritten = prog.OutputsWritten;
+   program->IsPositionInvariant = (state.option.PositionInvariant)
+      ? GL_TRUE : GL_FALSE;
+
+   if (program->Base.Instructions)
+      free(program->Base.Instructions);
+   program->Base.Instructions = prog.Instructions;
+
+   if (program->Base.Parameters)
+      _mesa_free_parameter_list(program->Base.Parameters);
+   program->Base.Parameters = prog.Parameters; 
+
+#if DEBUG_VP
+   printf("____________Vertex program %u __________\n", program->Base.Id);
+   _mesa_print_program(&program->Base);
+#endif
+}