Merge branch 'mesa_7_6_branch'

Conflicts:

	src/mesa/drivers/dri/r600/r700_assembler.c
	src/mesa/drivers/dri/r600/r700_chip.c
	src/mesa/drivers/dri/r600/r700_render.c
	src/mesa/drivers/dri/r600/r700_vertprog.c
	src/mesa/drivers/dri/r600/r700_vertprog.h
	src/mesa/drivers/dri/radeon/radeon_span.c

7 files changed, 38 insertions, 17 deletions

diff --git a/src/mesa/drivers/dri/r300/r300_fragprog_common.c b/src/mesa/drivers/dri/r300/r300_fragprog_common.c
index 469c278b510..0bdc90b4a84 100644
--- a/src/mesa/drivers/dri/r300/r300_fragprog_common.c
+++ b/src/mesa/drivers/dri/r300/r300_fragprog_common.c
@@ -99,8 +99,8 @@ static void insert_WPOS_trailer(struct r300_fragment_program_compiler *compiler,
 {
 	int i;
 
+	fp->wpos_attr = FRAG_ATTRIB_MAX;
 	if (!(compiler->Base.Program.InputsRead & FRAG_BIT_WPOS)) {
-		fp->wpos_attr = FRAG_ATTRIB_MAX;
 		return;
 	}
 
@@ -112,6 +112,13 @@ static void insert_WPOS_trailer(struct r300_fragment_program_compiler *compiler,
 		}
 	}
 
+	/* No free texcoord found, fall-back to software rendering */
+	if (fp->wpos_attr == FRAG_ATTRIB_MAX)
+	{
+		compiler->Base.Error = 1;
+		return;
+	}
+
 	rc_transform_fragment_wpos(&compiler->Base, FRAG_ATTRIB_WPOS, fp->wpos_attr);
 }
 
@@ -127,8 +134,8 @@ static void rewriteFog(struct r300_fragment_program_compiler *compiler, struct r
 	struct prog_src_register src;
 	int i;
 
+	fp->fog_attr = FRAG_ATTRIB_MAX;
 	if (!(compiler->Base.Program.InputsRead & FRAG_BIT_FOGC)) {
-		fp->fog_attr = FRAG_ATTRIB_MAX;
 		return;
 	}
 
@@ -140,6 +147,13 @@ static void rewriteFog(struct r300_fragment_program_compiler *compiler, struct r
 		}
 	}
 
+	/* No free texcoord found, fall-back to software rendering */
+	if (fp->fog_attr == FRAG_ATTRIB_MAX)
+	{
+		compiler->Base.Error = 1;
+		return;
+	}
+
 	memset(&src, 0, sizeof(src));
 	src.File = PROGRAM_INPUT;
 	src.Index = fp->fog_attr;
diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index 2f3e47e69ec..d7e77e759e0 100644
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -276,6 +276,7 @@ need_saturate( GLuint mode )
       return GL_TRUE;
    default:
       assert(0);
+      return GL_FALSE;
    }
 }
 
diff --git a/src/mesa/shader/prog_execute.c b/src/mesa/shader/prog_execute.c
index c8a762f8ff7..69b81e724a2 100644
--- a/src/mesa/shader/prog_execute.c
+++ b/src/mesa/shader/prog_execute.c
@@ -1555,17 +1555,12 @@ _mesa_execute_program(GLcontext * ctx,
       case OPCODE_TXB:         /* GL_ARB_fragment_program only */
          /* Texel lookup with LOD bias */
          {
-            const GLuint unit = machine->Samplers[inst->TexSrcUnit];
-            const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
             GLfloat texcoord[4], color[4], lodBias;
 
             fetch_vector4(&inst->SrcReg[0], machine, texcoord);
 
             /* texcoord[3] is the bias to add to lambda */
-            lodBias = texUnit->LodBias + texcoord[3];
-            if (texUnit->_Current) {
-               lodBias += texUnit->_Current->LodBias;
-            }
+            lodBias = texcoord[3];
 
             fetch_texel(ctx, machine, inst, texcoord, lodBias, color);
 
diff --git a/src/mesa/shader/slang/slang_builtin.c b/src/mesa/shader/slang/slang_builtin.c
index bef0f856534..e5809509c93 100644
--- a/src/mesa/shader/slang/slang_builtin.c
+++ b/src/mesa/shader/slang/slang_builtin.c
@@ -741,7 +741,7 @@ static const struct input_info vertInputs[] = {
    { "gl_MultiTexCoord5", VERT_ATTRIB_TEX5, GL_FLOAT_VEC4, SWIZZLE_NOOP },
    { "gl_MultiTexCoord6", VERT_ATTRIB_TEX6, GL_FLOAT_VEC4, SWIZZLE_NOOP },
    { "gl_MultiTexCoord7", VERT_ATTRIB_TEX7, GL_FLOAT_VEC4, SWIZZLE_NOOP },
-   { NULL, 0, SWIZZLE_NOOP }
+   { NULL, 0, GL_NONE, SWIZZLE_NOOP }
 };
 
 /** Predefined fragment shader inputs */
@@ -754,7 +754,7 @@ static const struct input_info fragInputs[] = {
    { "gl_FogFragCoord", FRAG_ATTRIB_FOGC, GL_FLOAT, SWIZZLE_XXXX },
    { "gl_FrontFacing", FRAG_ATTRIB_FACE, GL_FLOAT, SWIZZLE_XXXX },
    { "gl_PointCoord", FRAG_ATTRIB_PNTC, GL_FLOAT_VEC2, SWIZZLE_XYZW },
-   { NULL, 0, SWIZZLE_NOOP }
+   { NULL, 0, GL_NONE, SWIZZLE_NOOP }
 };
 
 
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 349f432deca..703af9f8740 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -2775,7 +2775,7 @@ _slang_gen_while(slang_assemble_ctx * A, slang_operation *oper)
     *    body code (child[1])
     */
    slang_ir_node *loop, *breakIf, *body;
-   GLboolean isConst, constTrue;
+   GLboolean isConst, constTrue = GL_FALSE;
 
    if (!A->EmitContReturn) {
       /* We don't want to emit CONT instructions.  If this while-loop has
diff --git a/src/mesa/state_tracker/st_draw.c b/src/mesa/state_tracker/st_draw.c
index 503a5f34a3f..c76bff91819 100644
--- a/src/mesa/state_tracker/st_draw.c
+++ b/src/mesa/state_tracker/st_draw.c
@@ -328,23 +328,29 @@ get_arrays_bounds(const struct st_vertex_program *vp,
                        const GLubyte **low, const GLubyte **high)
 {
    const GLubyte *low_addr = NULL;
+   const GLubyte *high_addr = NULL;
    GLuint attr;
-   GLint stride;
 
    for (attr = 0; attr < vp->num_inputs; attr++) {
       const GLuint mesaAttr = vp->index_to_input[attr];
+      const GLint stride = arrays[mesaAttr]->StrideB;
       const GLubyte *start = arrays[mesaAttr]->Ptr;
-      stride = arrays[mesaAttr]->StrideB;
+      const unsigned sz = (arrays[mesaAttr]->Size * 
+                           _mesa_sizeof_type(arrays[mesaAttr]->Type));
+      const GLubyte *end = start + (max_index * stride) + sz;
+
       if (attr == 0) {
          low_addr = start;
+         high_addr = end;
       }
       else {
          low_addr = MIN2(low_addr, start);
+         high_addr = MAX2(high_addr, end);
       }
    }
 
    *low = low_addr;
-   *high = low_addr + (max_index + 1) * stride;
+   *high = high_addr;
 }
 
 
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c
index 613a91b0ecd..77a77f0bcbb 100644
--- a/src/mesa/swrast/s_fragprog.c
+++ b/src/mesa/swrast/s_fragprog.c
@@ -89,6 +89,8 @@ fetch_texel_lod( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda,
  * Fetch a texel with the given partial derivatives to compute a level
  * of detail in the mipmap.
  * Called via machine->FetchTexelDeriv()
+ * \param lodBias  the lod bias which may be specified by a TXB instruction,
+ *                 otherwise zero.
  */
 static void
 fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
@@ -96,7 +98,8 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
                    GLfloat lodBias, GLuint unit, GLfloat color[4] )
 {
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
+   const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+   const struct gl_texture_object *texObj = texUnit->_Current;
 
    if (texObj) {
       const struct gl_texture_image *texImg =
@@ -108,10 +111,12 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
 
       lambda = _swrast_compute_lambda(texdx[0], texdy[0], /* ds/dx, ds/dy */
                                       texdx[1], texdy[1], /* dt/dx, dt/dy */
-                                      texdx[3], texdy[2], /* dq/dx, dq/dy */
+                                      texdx[3], texdy[3], /* dq/dx, dq/dy */
                                       texW, texH,
                                       texcoord[0], texcoord[1], texcoord[3],
-                                      1.0F / texcoord[3]) + lodBias;
+                                      1.0F / texcoord[3]);
+
+      lambda += lodBias + texUnit->LodBias + texObj->LodBias;
 
       lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod);