1 files changed, 348 insertions, 2 deletions

diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index 9359c7b1b1..59fd7a9928 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -25,10 +25,12 @@
 
 #include "glheader.h"
 #include "colormac.h"
+#include "colortab.h"
 #include "context.h"
 #include "enums.h"
 #include "extensions.h"
 #include "macros.h"
+#include "nvfragprog.h"
 #include "texobj.h"
 #include "teximage.h"
 #include "texstate.h"
@@ -1909,7 +1911,7 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
 /*                    Texture Coord Generation                        */
 /**********************************************************************/
 
-
+#if FEATURE_texgen
 void
 _mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
 {
@@ -2458,7 +2460,7 @@ _mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
 	 return;
    }
 }
-
+#endif
 
 /* GL_ARB_multitexture */
 void
@@ -2643,3 +2645,347 @@ _mesa_GetPixelTexGenParameterivSGIS(GLenum target, GLint *value)
       _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelTexGenParameterivSGIS(target)");
    }
 }
+
+
+
+/**********************************************************************/
+/*****                    State management                        *****/
+/**********************************************************************/
+
+
+/**
+ * \note This routine refers to derived texture attribute values to
+ * compute the ENABLE_TEXMAT flags, but is only called on
+ * _NEW_TEXTURE_MATRIX.  On changes to _NEW_TEXTURE, the ENABLE_TEXMAT
+ * flags are updated by _mesa_update_textures(), below.
+ *
+ * \param ctx GL context.
+ */
+static void
+update_texture_matrices( GLcontext *ctx )
+{
+   GLuint i;
+
+   ctx->Texture._TexMatEnabled = 0;
+
+   for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
+      if (ctx->TextureMatrixStack[i].Top->flags & MAT_DIRTY) {
+	 _math_matrix_analyse( ctx->TextureMatrixStack[i].Top );
+
+	 if (ctx->Texture.Unit[i]._ReallyEnabled &&
+	     ctx->TextureMatrixStack[i].Top->type != MATRIX_IDENTITY)
+	    ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(i);
+
+	 if (ctx->Driver.TextureMatrix)
+	    ctx->Driver.TextureMatrix( ctx, i, ctx->TextureMatrixStack[i].Top);
+      }
+   }
+}
+
+
+
+
+/**
+ * \note This routine refers to derived texture matrix values to
+ * compute the ENABLE_TEXMAT flags, but is only called on
+ * _NEW_TEXTURE.  On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
+ * flags are updated by _mesa_update_texture_matrices, above.
+ *
+ * \param ctx GL context.
+ */
+static void
+update_texture_state( GLcontext *ctx )
+{
+   GLuint unit;
+
+   ctx->Texture._EnabledUnits = 0;
+   ctx->Texture._GenFlags = 0;
+   ctx->Texture._TexMatEnabled = 0;
+   ctx->Texture._TexGenEnabled = 0;
+
+   /* Update texture unit state.
+    * XXX this loop should probably be broken into separate loops for
+    * texture coord units and texture image units.
+    */
+   for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
+      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+      GLuint enableBits;
+
+      texUnit->_ReallyEnabled = 0;
+      texUnit->_GenFlags = 0;
+
+      /* Get the bitmask of texture enables */
+      if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) {
+         enableBits = ctx->FragmentProgram.Current->TexturesUsed[unit];
+      }
+      else {
+         if (!texUnit->Enabled)
+            continue;
+         enableBits = texUnit->Enabled;
+      }
+
+      /* Look for the highest-priority texture target that's enabled and
+       * complete.  That's the one we'll use for texturing.  If we're using
+       * a fragment program we're guaranteed that bitcount(enabledBits) <= 1.
+       */
+      if (texUnit->Enabled & TEXTURE_CUBE_BIT) {
+         struct gl_texture_object *texObj = texUnit->CurrentCubeMap;
+         if (!texObj->Complete) {
+            _mesa_test_texobj_completeness(ctx, texObj);
+         }
+         if (texObj->Complete) {
+            texUnit->_ReallyEnabled = TEXTURE_CUBE_BIT;
+            texUnit->_Current = texObj;
+         }
+      }
+
+      if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_3D_BIT)) {
+         struct gl_texture_object *texObj = texUnit->Current3D;
+         if (!texObj->Complete) {
+            _mesa_test_texobj_completeness(ctx, texObj);
+         }
+         if (texObj->Complete) {
+            texUnit->_ReallyEnabled = TEXTURE_3D_BIT;
+            texUnit->_Current = texObj;
+         }
+      }
+
+      if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_RECT_BIT)) {
+         struct gl_texture_object *texObj = texUnit->CurrentRect;
+         if (!texObj->Complete) {
+            _mesa_test_texobj_completeness(ctx, texObj);
+         }
+         if (texObj->Complete) {
+            texUnit->_ReallyEnabled = TEXTURE_RECT_BIT;
+            texUnit->_Current = texObj;
+         }
+      }
+
+      if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_2D_BIT)) {
+         struct gl_texture_object *texObj = texUnit->Current2D;
+         if (!texObj->Complete) {
+            _mesa_test_texobj_completeness(ctx, texObj);
+         }
+         if (texObj->Complete) {
+            texUnit->_ReallyEnabled = TEXTURE_2D_BIT;
+            texUnit->_Current = texObj;
+         }
+      }
+
+      if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_1D_BIT)) {
+         struct gl_texture_object *texObj = texUnit->Current1D;
+         if (!texObj->Complete) {
+            _mesa_test_texobj_completeness(ctx, texObj);
+         }
+         if (texObj->Complete) {
+            texUnit->_ReallyEnabled = TEXTURE_1D_BIT;
+            texUnit->_Current = texObj;
+         }
+      }
+
+      if (!texUnit->_ReallyEnabled) {
+	 texUnit->_Current = NULL;
+	 continue;
+      }
+
+      if (texUnit->_ReallyEnabled)
+         ctx->Texture._EnabledUnits |= (1 << unit);
+
+      if (texUnit->TexGenEnabled) {
+	 if (texUnit->TexGenEnabled & S_BIT) {
+	    texUnit->_GenFlags |= texUnit->_GenBitS;
+	 }
+	 if (texUnit->TexGenEnabled & T_BIT) {
+	    texUnit->_GenFlags |= texUnit->_GenBitT;
+	 }
+	 if (texUnit->TexGenEnabled & Q_BIT) {
+	    texUnit->_GenFlags |= texUnit->_GenBitQ;
+	 }
+	 if (texUnit->TexGenEnabled & R_BIT) {
+	    texUnit->_GenFlags |= texUnit->_GenBitR;
+	 }
+
+	 ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);
+	 ctx->Texture._GenFlags |= texUnit->_GenFlags;
+      }
+
+      if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)
+	 ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);
+   }
+
+   ctx->Texture._EnabledCoordUnits = ctx->Texture._EnabledUnits;
+   /* Fragment programs may need texture coordinates but not the
+    * corresponding texture images.
+    */
+   if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) {
+      ctx->Texture._EnabledCoordUnits |=
+         (ctx->FragmentProgram.Current->InputsRead >> FRAG_ATTRIB_TEX0);
+   }
+}
+
+
+void _mesa_update_texture( GLcontext *ctx, GLuint new_state )
+{
+   if (new_state & _NEW_TEXTURE_MATRIX)
+      update_texture_matrices( ctx );
+
+   if (new_state & _NEW_TEXTURE)
+      update_texture_state( ctx );
+}
+
+/**********************************************************************/
+/*****                      Initialization                        *****/
+/**********************************************************************/
+
+/**
+ * Allocate the proxy textures for the given context.
+ * 
+ * \param ctx the context to allocate proxies for.
+ * 
+ * \return GL_TRUE on success, or GL_FALSE on failure
+ * 
+ * If run out of memory part way through the allocations, clean up and return
+ * GL_FALSE.
+ */
+static GLboolean
+alloc_proxy_textures( GLcontext *ctx )
+{
+   ctx->Texture.Proxy1D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_1D);
+   if (!ctx->Texture.Proxy1D)
+      goto cleanup;
+
+   ctx->Texture.Proxy2D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_2D);
+   if (!ctx->Texture.Proxy2D)
+      goto cleanup;
+
+   ctx->Texture.Proxy3D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_3D);
+   if (!ctx->Texture.Proxy3D)
+      goto cleanup;
+
+   ctx->Texture.ProxyCubeMap = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_CUBE_MAP_ARB);
+   if (!ctx->Texture.ProxyCubeMap)
+      goto cleanup;
+
+   ctx->Texture.ProxyRect = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_RECTANGLE_NV);
+   if (!ctx->Texture.ProxyRect)
+      goto cleanup;
+
+   return GL_TRUE;
+
+ cleanup:
+   if (ctx->Texture.Proxy1D)
+      (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy1D);
+   if (ctx->Texture.Proxy2D)
+      (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy2D);
+   if (ctx->Texture.Proxy3D)
+      (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy3D);
+   if (ctx->Texture.ProxyCubeMap)
+      (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyCubeMap);
+   if (ctx->Texture.ProxyRect)
+      (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyRect);
+   return GL_FALSE;
+}
+
+
+/**
+ * Initialize a texture unit.
+ *
+ * \param ctx GL context.
+ * \param unit texture unit number to be initialized.
+ */
+static void
+init_texture_unit( GLcontext *ctx, GLuint unit )
+{
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+
+   texUnit->EnvMode = GL_MODULATE;
+   ASSIGN_4V( texUnit->EnvColor, 0.0, 0.0, 0.0, 0.0 );
+
+   texUnit->CombineModeRGB = GL_MODULATE;
+   texUnit->CombineModeA = GL_MODULATE;
+   texUnit->CombineSourceRGB[0] = GL_TEXTURE;
+   texUnit->CombineSourceRGB[1] = GL_PREVIOUS_EXT;
+   texUnit->CombineSourceRGB[2] = GL_CONSTANT_EXT;
+   texUnit->CombineSourceA[0] = GL_TEXTURE;
+   texUnit->CombineSourceA[1] = GL_PREVIOUS_EXT;
+   texUnit->CombineSourceA[2] = GL_CONSTANT_EXT;
+   texUnit->CombineOperandRGB[0] = GL_SRC_COLOR;
+   texUnit->CombineOperandRGB[1] = GL_SRC_COLOR;
+   texUnit->CombineOperandRGB[2] = GL_SRC_ALPHA;
+   texUnit->CombineOperandA[0] = GL_SRC_ALPHA;
+   texUnit->CombineOperandA[1] = GL_SRC_ALPHA;
+   texUnit->CombineOperandA[2] = GL_SRC_ALPHA;
+   texUnit->CombineScaleShiftRGB = 0;
+   texUnit->CombineScaleShiftA = 0;
+
+   texUnit->TexGenEnabled = 0;
+   texUnit->GenModeS = GL_EYE_LINEAR;
+   texUnit->GenModeT = GL_EYE_LINEAR;
+   texUnit->GenModeR = GL_EYE_LINEAR;
+   texUnit->GenModeQ = GL_EYE_LINEAR;
+   texUnit->_GenBitS = TEXGEN_EYE_LINEAR;
+   texUnit->_GenBitT = TEXGEN_EYE_LINEAR;
+   texUnit->_GenBitR = TEXGEN_EYE_LINEAR;
+   texUnit->_GenBitQ = TEXGEN_EYE_LINEAR;
+
+   /* Yes, these plane coefficients are correct! */
+   ASSIGN_4V( texUnit->ObjectPlaneS, 1.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->ObjectPlaneT, 0.0, 1.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->ObjectPlaneR, 0.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->ObjectPlaneQ, 0.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->EyePlaneS, 1.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->EyePlaneT, 0.0, 1.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->EyePlaneR, 0.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->EyePlaneQ, 0.0, 0.0, 0.0, 0.0 );
+
+   texUnit->Current1D = ctx->Shared->Default1D;
+   texUnit->Current2D = ctx->Shared->Default2D;
+   texUnit->Current3D = ctx->Shared->Default3D;
+   texUnit->CurrentCubeMap = ctx->Shared->DefaultCubeMap;
+   texUnit->CurrentRect = ctx->Shared->DefaultRect;
+}
+
+
+GLboolean _mesa_init_texture( GLcontext * ctx )
+{
+   int i;
+
+   assert(MAX_TEXTURE_LEVELS >= MAX_3D_TEXTURE_LEVELS);
+   assert(MAX_TEXTURE_LEVELS >= MAX_CUBE_TEXTURE_LEVELS);
+
+   /* Effectively bind the default textures to all texture units */
+   ctx->Shared->Default1D->RefCount += MAX_TEXTURE_UNITS;
+   ctx->Shared->Default2D->RefCount += MAX_TEXTURE_UNITS;
+   ctx->Shared->Default3D->RefCount += MAX_TEXTURE_UNITS;
+   ctx->Shared->DefaultCubeMap->RefCount += MAX_TEXTURE_UNITS;
+   ctx->Shared->DefaultRect->RefCount += MAX_TEXTURE_UNITS;
+
+   /* Texture group */
+   ctx->Texture.CurrentUnit = 0;      /* multitexture */
+   ctx->Texture._EnabledUnits = 0;
+   for (i=0; i<MAX_TEXTURE_UNITS; i++)
+      init_texture_unit( ctx, i );
+   ctx->Texture.SharedPalette = GL_FALSE;
+   _mesa_init_one_colortable(&ctx->Texture.Palette);
+
+   /* Allocate proxy textures */
+   if (!alloc_proxy_textures( ctx ))
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+void _mesa_free_texture_data( GLcontext *ctx )
+{
+   int i;
+
+   /* Free proxy texture objects */
+   (ctx->Driver.DeleteTexture)(ctx,  ctx->Texture.Proxy1D );
+   (ctx->Driver.DeleteTexture)(ctx,  ctx->Texture.Proxy2D );
+   (ctx->Driver.DeleteTexture)(ctx,  ctx->Texture.Proxy3D );
+   (ctx->Driver.DeleteTexture)(ctx,  ctx->Texture.ProxyCubeMap );
+   (ctx->Driver.DeleteTexture)(ctx,  ctx->Texture.ProxyRect );
+
+   for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++)
+      _mesa_free_colortable_data( &ctx->Texture.Unit[i].ColorTable );
+}