fixed pointer arithmetic error in glCopyPixels

[mesa.git] / src / mesa / main / blend.c

diff --git a/src/mesa/main/blend.c b/src/mesa/main/blend.c
index ef26563add62297def8b2f49b0e50b30c7e3da70..b00e834d4f2ffbf432ebfa46d23b81ee9d0e27b0 100644 (file)
--- a/src/mesa/main/blend.c
+++ b/src/mesa/main/blend.c
@@ -1,4 +1,4 @@
-/* $Id: blend.c,v 1.31 2001/03/12 00:48:37 gareth Exp $ */
+/* $Id: blend.c,v 1.34 2001/09/14 21:36:43 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -30,6 +30,7 @@
 #else
 #include "glheader.h"
 #include "blend.h"
+#include "colormac.h"
 #include "context.h"
 #include "enums.h"
 #include "macros.h"
@@ -126,7 +127,7 @@ _mesa_BlendFuncSeparateEXT( GLenum sfactorRGB, GLenum dfactorRGB,
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
-      fprintf(stderr, "glBlendFuncSeperate %s %s %s %s\n",
+      fprintf(stderr, "glBlendFuncSeparate %s %s %s %s\n",
              _mesa_lookup_enum_by_nr(sfactorRGB),
              _mesa_lookup_enum_by_nr(dfactorRGB),
              _mesa_lookup_enum_by_nr(sfactorA),
@@ -325,10 +326,10 @@ _mesa_BlendColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha )
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   tmp[0] = CLAMP( red,   0.0, 1.0 );
-   tmp[1] = CLAMP( green, 0.0, 1.0 );
-   tmp[2] = CLAMP( blue,  0.0, 1.0 );
-   tmp[3] = CLAMP( alpha, 0.0, 1.0 );
+   tmp[0] = CLAMP( red,   0.0F, 1.0F );
+   tmp[1] = CLAMP( green, 0.0F, 1.0F );
+   tmp[2] = CLAMP( blue,  0.0F, 1.0F );
+   tmp[3] = CLAMP( alpha, 0.0F, 1.0F );
 
    if (TEST_EQ_4V(tmp, ctx->Color.BlendColor))
       return;
@@ -339,3 +340,127 @@ _mesa_BlendColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha )
    if (ctx->Driver.BlendColor)
       (*ctx->Driver.BlendColor)(ctx, tmp);
 }
+
+
+void
+_mesa_AlphaFunc( GLenum func, GLclampf ref )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLchan cref;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (func) {
+   case GL_NEVER:
+   case GL_LESS:
+   case GL_EQUAL:
+   case GL_LEQUAL:
+   case GL_GREATER:
+   case GL_NOTEQUAL:
+   case GL_GEQUAL:
+   case GL_ALWAYS:
+      /* convert float alpha ref to GLchan type */
+      UNCLAMPED_FLOAT_TO_CHAN(cref, ref);
+
+      if (ctx->Color.AlphaFunc == func && ctx->Color.AlphaRef == cref)
+         return;
+
+      FLUSH_VERTICES(ctx, _NEW_COLOR);
+      ctx->Color.AlphaFunc = func;
+      ctx->Color.AlphaRef = cref;
+
+      if (ctx->Driver.AlphaFunc)
+         ctx->Driver.AlphaFunc(ctx, func, cref);
+      return;
+
+   default:
+      _mesa_error( ctx, GL_INVALID_ENUM, "glAlphaFunc(func)" );
+      return;
+   }
+}
+
+
+void
+_mesa_LogicOp( GLenum opcode )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (opcode) {
+      case GL_CLEAR:
+      case GL_SET:
+      case GL_COPY:
+      case GL_COPY_INVERTED:
+      case GL_NOOP:
+      case GL_INVERT:
+      case GL_AND:
+      case GL_NAND:
+      case GL_OR:
+      case GL_NOR:
+      case GL_XOR:
+      case GL_EQUIV:
+      case GL_AND_REVERSE:
+      case GL_AND_INVERTED:
+      case GL_OR_REVERSE:
+      case GL_OR_INVERTED:
+        break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glLogicOp" );
+        return;
+   }
+
+   if (ctx->Color.LogicOp == opcode)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_COLOR);
+   ctx->Color.LogicOp = opcode;
+
+   if (ctx->Driver.LogicOpcode)
+      ctx->Driver.LogicOpcode( ctx, opcode );
+}
+
+
+void
+_mesa_IndexMask( GLuint mask )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (ctx->Color.IndexMask == mask)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_COLOR);
+   ctx->Color.IndexMask = mask;
+
+   if (ctx->Driver.IndexMask)
+      ctx->Driver.IndexMask( ctx, mask );
+}
+
+
+void
+_mesa_ColorMask( GLboolean red, GLboolean green,
+                 GLboolean blue, GLboolean alpha )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLubyte tmp[4];
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      fprintf(stderr, "glColorMask %d %d %d %d\n", red, green, blue, alpha);
+
+   /* Shouldn't have any information about channel depth in core mesa
+    * -- should probably store these as the native booleans:
+    */
+   tmp[RCOMP] = red    ? 0xff : 0x0;
+   tmp[GCOMP] = green  ? 0xff : 0x0;
+   tmp[BCOMP] = blue   ? 0xff : 0x0;
+   tmp[ACOMP] = alpha  ? 0xff : 0x0;
+
+   if (TEST_EQ_4UBV(tmp, ctx->Color.ColorMask))
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_COLOR);
+   COPY_4UBV(ctx->Color.ColorMask, tmp);
+
+   if (ctx->Driver.ColorMask)
+      ctx->Driver.ColorMask( ctx, red, green, blue, alpha );
+}