Merge branch 'origin'

3 files changed, 15 insertions, 9 deletions

diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index 3199c9b426..07ec285eeb 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -1102,7 +1102,8 @@ _mesa_PopAttrib(void)
                                    (GLint) point->CoordReplace[u]);
                   }
                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
-                  _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
+                  if (ctx->Extensions.NV_point_sprite)
+                     _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
                                           ctx->Point.SpriteRMode);
                   _mesa_PointParameterfEXT(GL_POINT_SPRITE_COORD_ORIGIN,
                                            (GLfloat)ctx->Point.SpriteOrigin);
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
index cbbe3e8698..d9c18bfaaf 100644
--- a/src/mesa/main/buffers.c
+++ b/src/mesa/main/buffers.c
@@ -140,7 +140,9 @@ _mesa_Clear( GLbitfield mask )
       return;
    }
 
-   if (ctx->DrawBuffer->Width == 0 || ctx->DrawBuffer->Height == 0)
+   if (ctx->DrawBuffer->Width == 0 || ctx->DrawBuffer->Height == 0 ||
+       ctx->DrawBuffer->_Xmin >= ctx->DrawBuffer->_Xmax ||
+       ctx->DrawBuffer->_Ymin >= ctx->DrawBuffer->_Ymax)
       return;
 
    if (ctx->RenderMode == GL_RENDER) {
diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index 9c84da985e..a2b9657bbb 100644
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -35,10 +35,11 @@
 #include "texenvprogram.h"
 
 /**
- * According to Glean's texCombine test, no more than 21 instructions
- * are needed.  Allow a few extra just in case.
+ * This MAX is probably a bit generous, but that's OK.  There can be
+ * up to four instructions per texture unit (TEX + 3 for combine),
+ * then there's fog and specular add.
  */
-#define MAX_INSTRUCTIONS ((MAX_TEXTURE_UNITS * 6) + 10) /* see bug 9829 */
+#define MAX_INSTRUCTIONS ((MAX_TEXTURE_UNITS * 4) + 12)
 
 #define DISASSEM (MESA_VERBOSE & VERBOSE_DISASSEM)
 
@@ -460,8 +461,8 @@ static void emit_dst( struct prog_dst_register *dst,
    dst->File = ureg.file;
    dst->Index = ureg.idx;
    dst->WriteMask = mask;
-   dst->CondMask = 0;
-   dst->CondSwizzle = 0;
+   dst->CondMask = COND_TR;  /* always pass cond test */
+   dst->CondSwizzle = SWIZZLE_NOOP;
 }
 
 static struct prog_instruction *
@@ -476,7 +477,9 @@ emit_op(struct texenv_fragment_program *p,
 {
    GLuint nr = p->program->Base.NumInstructions++;
    struct prog_instruction *inst = &p->program->Base.Instructions[nr];
-      
+
+   assert(nr < MAX_INSTRUCTIONS);
+
    _mesa_init_instructions(inst, 1);
    inst->Opcode = op;
    
@@ -1239,7 +1242,7 @@ _mesa_UpdateTexEnvProgram( GLcontext *ctx )
 
    /* If a conventional fragment program/shader isn't in effect... */
    if (!ctx->FragmentProgram._Enabled &&
-       !ctx->Shader.CurrentProgram) {
+       (!ctx->Shader.CurrentProgram || !ctx->Shader.CurrentProgram->FragmentProgram)) {
       make_state_key(ctx, &key);
       hash = hash_key(&key);