Merge remote branch 'origin/7.8'

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

diff --git a/src/mesa/main/enable.c b/src/mesa/main/enable.c
index 12ce14c5d04e2b6ac5eb6f89e585a2e04ef05c55..f9decc31ab75e3b3ffa36d4413e623ef38d64054 100644 (file)
--- a/src/mesa/main/enable.c
+++ b/src/mesa/main/enable.c
@@ -32,7 +32,6 @@
 #include "context.h"
 #include "enable.h"
 #include "light.h"
-#include "macros.h"
 #include "simple_list.h"
 #include "mtypes.h"
 #include "enums.h"
@@ -278,10 +277,13 @@ _mesa_set_enable(GLcontext *ctx, GLenum cap, GLboolean state)
          ctx->Eval.AutoNormal = state;
          break;
       case GL_BLEND:
-         if (ctx->Color.BlendEnabled == state)
-            return;
-         FLUSH_VERTICES(ctx, _NEW_COLOR);
-         ctx->Color.BlendEnabled = state;
+         {
+            GLbitfield newEnabled = state * ((1 << ctx->Const.MaxDrawBuffers) - 1);
+            if (newEnabled != ctx->Color.BlendEnabled) {
+               FLUSH_VERTICES(ctx, _NEW_COLOR);
+               ctx->Color.BlendEnabled = newEnabled;
+            }
+         }
          break;
 #if FEATURE_userclip
       case GL_CLIP_PLANE0:
@@ -980,6 +982,16 @@ _mesa_set_enable(GLcontext *ctx, GLenum cap, GLboolean state)
         ctx->Texture.CubeMapSeamless = state;
         break;
 
+#if FEATURE_EXT_transform_feedback
+      case GL_RASTERIZER_DISCARD:
+        CHECK_EXTENSION(EXT_transform_feedback, cap);
+         if (ctx->TransformFeedback.RasterDiscard != state) {
+            ctx->TransformFeedback.RasterDiscard = state;
+            FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+         }
+         break;
+#endif
+
       default:
          _mesa_error(ctx, GL_INVALID_ENUM,
                      "%s(0x%x)", state ? "glEnable" : "glDisable", cap);
@@ -1020,6 +1032,84 @@ _mesa_Disable( GLenum cap )
 }
 
 
+
+/**
+ * Enable/disable an indexed state var.
+ */
+void
+_mesa_set_enablei(GLcontext *ctx, GLenum cap, GLuint index, GLboolean state)
+{
+   ASSERT(state == 0 || state == 1);
+   switch (cap) {
+   case GL_BLEND:
+      if (!ctx->Extensions.EXT_draw_buffers2) {
+         goto bad_cap_error;
+      }
+      if (index >= ctx->Const.MaxDrawBuffers) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)",
+                     state ? "glEnableIndexed" : "glDisableIndexed", index);
+         return;
+      }
+      if (((ctx->Color.BlendEnabled >> index) & 1) != state) {
+         FLUSH_VERTICES(ctx, _NEW_COLOR);
+         if (state)
+            ctx->Color.BlendEnabled |= (1 << index);
+         else
+            ctx->Color.BlendEnabled &= ~(1 << index);
+      }
+      break;
+   default:
+      goto bad_cap_error;
+   }
+   return;
+
+bad_cap_error:
+    _mesa_error(ctx, GL_INVALID_ENUM, "%s(cap=%s)",
+                state ? "glEnablei" : "glDisablei",
+                _mesa_lookup_enum_by_nr(cap));
+}
+
+
+void GLAPIENTRY
+_mesa_DisableIndexed( GLenum cap, GLuint index )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   _mesa_set_enablei(ctx, cap, index, GL_FALSE);
+}
+
+
+void GLAPIENTRY
+_mesa_EnableIndexed( GLenum cap, GLuint index )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   _mesa_set_enablei(ctx, cap, index, GL_TRUE);
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_IsEnabledIndexed( GLenum cap, GLuint index )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   switch (cap) {
+   case GL_BLEND:
+      if (index >= ctx->Const.MaxDrawBuffers) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glIsEnabledIndexed(index=%u)",
+                     index);
+         return GL_FALSE;
+      }
+      return (ctx->Color.BlendEnabled >> index) & 1;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabledIndexed(cap=%s)",
+                  _mesa_lookup_enum_by_nr(cap));
+      return GL_FALSE;
+   }
+}
+
+
+
+
 #undef CHECK_EXTENSION
 #define CHECK_EXTENSION(EXTNAME)                       \
    if (!ctx->Extensions.EXTNAME) {                     \
@@ -1066,7 +1156,7 @@ _mesa_IsEnabled( GLenum cap )
       case GL_AUTO_NORMAL:
         return ctx->Eval.AutoNormal;
       case GL_BLEND:
-         return ctx->Color.BlendEnabled;
+         return ctx->Color.BlendEnabled & 1;  /* return state for buffer[0] */
       case GL_CLIP_PLANE0:
       case GL_CLIP_PLANE1:
       case GL_CLIP_PLANE2:
@@ -1413,6 +1503,12 @@ _mesa_IsEnabled( GLenum cap )
         CHECK_EXTENSION(ARB_seamless_cube_map);
         return ctx->Texture.CubeMapSeamless;
 
+#if FEATURE_EXT_transform_feedback
+      case GL_RASTERIZER_DISCARD:
+        CHECK_EXTENSION(EXT_transform_feedback);
+         return ctx->TransformFeedback.RasterDiscard;
+#endif
+
       default:
          _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabled(0x%x)", (int) cap);
         return GL_FALSE;