mesa: GL_ARB_shader_objects is not optional

[mesa.git] / src / mesa / drivers / dri / i915 / intel_pixel.c

diff --git a/src/mesa/drivers/dri/i915/intel_pixel.c b/src/mesa/drivers/dri/i915/intel_pixel.c
index 9018e3daef497714487c1136732cdb477e8c98ec..f58cb855e60bb6b03c03291b5ba82c191261e020 100644 (file)
--- a/src/mesa/drivers/dri/i915/intel_pixel.c
+++ b/src/mesa/drivers/dri/i915/intel_pixel.c
@@ -25,96 +25,111 @@
  * 
  **************************************************************************/
 
-#include "enums.h"
-#include "state.h"
+#include "main/accum.h"
+#include "main/enums.h"
+#include "main/state.h"
+#include "main/bufferobj.h"
+#include "main/context.h"
 #include "swrast/swrast.h"
 
 #include "intel_context.h"
 #include "intel_pixel.h"
 #include "intel_regions.h"
 
+#define FILE_DEBUG_FLAG DEBUG_PIXEL
+
+static GLenum
+effective_func(GLenum func, bool src_alpha_is_one)
+{
+   if (src_alpha_is_one) {
+      if (func == GL_SRC_ALPHA)
+        return GL_ONE;
+      if (func == GL_ONE_MINUS_SRC_ALPHA)
+        return GL_ZERO;
+   }
+
+   return func;
+}
 
 /**
  * Check if any fragment operations are in effect which might effect
  * glDraw/CopyPixels.
  */
-GLboolean
-intel_check_blit_fragment_ops(GLcontext * ctx)
+bool
+intel_check_blit_fragment_ops(struct gl_context * ctx, bool src_alpha_is_one)
 {
    if (ctx->NewState)
       _mesa_update_state(ctx);
 
-   /* XXX Note: Scissor could be done with the blitter:
-    */
-   return !(ctx->_ImageTransferState ||
-            ctx->Color.AlphaEnabled ||
-            ctx->Depth.Test ||
-            ctx->Fog.Enabled ||
-            ctx->Scissor.Enabled ||
-            ctx->Stencil.Enabled ||
-            !ctx->Color.ColorMask[0] ||
-            !ctx->Color.ColorMask[1] ||
-            !ctx->Color.ColorMask[2] ||
-            !ctx->Color.ColorMask[3] ||
-            ctx->Texture._EnabledUnits || 
-           ctx->FragmentProgram._Enabled ||
-           ctx->Color.BlendEnabled);
-}
+   if (ctx->FragmentProgram._Enabled) {
+      DBG("fallback due to fragment program\n");
+      return false;
+   }
 
+   if (ctx->Color.BlendEnabled &&
+       (effective_func(ctx->Color.Blend[0].SrcRGB, src_alpha_is_one) != GL_ONE ||
+       effective_func(ctx->Color.Blend[0].DstRGB, src_alpha_is_one) != GL_ZERO ||
+       ctx->Color.Blend[0].EquationRGB != GL_FUNC_ADD ||
+       effective_func(ctx->Color.Blend[0].SrcA, src_alpha_is_one) != GL_ONE ||
+       effective_func(ctx->Color.Blend[0].DstA, src_alpha_is_one) != GL_ZERO ||
+       ctx->Color.Blend[0].EquationA != GL_FUNC_ADD)) {
+      DBG("fallback due to blend\n");
+      return false;
+   }
 
-GLboolean
-intel_check_meta_tex_fragment_ops(GLcontext * ctx)
-{
-   if (ctx->NewState)
-      _mesa_update_state(ctx);
+   if (ctx->Texture._EnabledUnits) {
+      DBG("fallback due to texturing\n");
+      return false;
+   }
 
-   /* Some of _ImageTransferState (scale, bias) could be done with
-    * fragment programs on i915.
-    */
-   return !(ctx->_ImageTransferState || ctx->Fog.Enabled ||     /* not done yet */
-            ctx->Texture._EnabledUnits || ctx->FragmentProgram._Enabled);
-}
+   if (!(ctx->Color.ColorMask[0][0] &&
+        ctx->Color.ColorMask[0][1] &&
+        ctx->Color.ColorMask[0][2] &&
+        ctx->Color.ColorMask[0][3])) {
+      DBG("fallback due to color masking\n");
+      return false;
+   }
 
-/* The intel_region struct doesn't really do enough to capture the
- * format of the pixels in the region.  For now this code assumes that
- * the region is a display surface and hence is either ARGB8888 or
- * RGB565.
- * XXX FBO: If we'd pass in the intel_renderbuffer instead of region, we'd
- * know the buffer's pixel format.
- *
- * \param format  as given to glDraw/ReadPixels
- * \param type  as given to glDraw/ReadPixels
- */
-GLboolean
-intel_check_blit_format(struct intel_region * region,
-                        GLenum format, GLenum type)
-{
-   if (region->cpp == 4 &&
-       (type == GL_UNSIGNED_INT_8_8_8_8_REV ||
-        type == GL_UNSIGNED_BYTE) && format == GL_BGRA) {
-      return GL_TRUE;
+   if (ctx->Color.AlphaEnabled) {
+      DBG("fallback due to alpha\n");
+      return false;
    }
 
-   if (region->cpp == 2 &&
-       type == GL_UNSIGNED_SHORT_5_6_5_REV && format == GL_BGR) {
-      return GL_TRUE;
+   if (ctx->Depth.Test) {
+      DBG("fallback due to depth test\n");
+      return false;
    }
 
-   if (INTEL_DEBUG & DEBUG_PIXEL)
-      fprintf(stderr, "%s: bad format for blit (cpp %d, type %s format %s)\n",
-              __FUNCTION__, region->cpp,
-              _mesa_lookup_enum_by_nr(type), _mesa_lookup_enum_by_nr(format));
+   if (ctx->Fog.Enabled) {
+      DBG("fallback due to fog\n");
+      return false;
+   }
 
-   return GL_FALSE;
-}
+   if (ctx->_ImageTransferState) {
+      DBG("fallback due to image transfer\n");
+      return false;
+   }
 
+   if (ctx->Stencil._Enabled) {
+      DBG("fallback due to image stencil\n");
+      return false;
+   }
+
+   if (ctx->RenderMode != GL_RENDER) {
+      DBG("fallback due to render mode\n");
+      return false;
+   }
+
+   return true;
+}
 
 void
 intelInitPixelFuncs(struct dd_function_table *functions)
 {
-   functions->Accum = _swrast_Accum;
-   functions->Bitmap = _swrast_Bitmap;
+   functions->Accum = _mesa_accum;
+   functions->Bitmap = intelBitmap;
    functions->CopyPixels = intelCopyPixels;
-   functions->ReadPixels = intelReadPixels;
    functions->DrawPixels = intelDrawPixels;
+   functions->ReadPixels = intelReadPixels;
 }
+