svga: Add svga driver

1 files changed, 246 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_pipe_blend.c b/src/gallium/drivers/svga/svga_pipe_blend.c
new file mode 100644
index 0000000000..855d228755
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_pipe_blend.c
@@ -0,0 +1,246 @@
+/**********************************************************
+ * Copyright 2008-2009 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **********************************************************/
+
+#include "pipe/p_inlines.h"
+#include "pipe/p_defines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "svga_context.h"
+#include "svga_state.h"
+
+#include "svga_hw_reg.h"
+
+
+static INLINE unsigned
+svga_translate_blend_factor(unsigned factor)
+{
+   switch (factor) {
+   case PIPE_BLENDFACTOR_ZERO:            return SVGA3D_BLENDOP_ZERO;
+   case PIPE_BLENDFACTOR_SRC_ALPHA:       return SVGA3D_BLENDOP_SRCALPHA;
+   case PIPE_BLENDFACTOR_ONE:             return SVGA3D_BLENDOP_ONE;
+   case PIPE_BLENDFACTOR_SRC_COLOR:       return SVGA3D_BLENDOP_SRCCOLOR;
+   case PIPE_BLENDFACTOR_INV_SRC_COLOR:   return SVGA3D_BLENDOP_INVSRCCOLOR;
+   case PIPE_BLENDFACTOR_DST_COLOR:       return SVGA3D_BLENDOP_DESTCOLOR;
+   case PIPE_BLENDFACTOR_INV_DST_COLOR:   return SVGA3D_BLENDOP_INVDESTCOLOR;
+   case PIPE_BLENDFACTOR_INV_SRC_ALPHA:   return SVGA3D_BLENDOP_INVSRCALPHA;
+   case PIPE_BLENDFACTOR_DST_ALPHA:       return SVGA3D_BLENDOP_DESTALPHA;
+   case PIPE_BLENDFACTOR_INV_DST_ALPHA:   return SVGA3D_BLENDOP_INVDESTALPHA;
+   case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE: return SVGA3D_BLENDOP_SRCALPHASAT;
+   case PIPE_BLENDFACTOR_CONST_COLOR:     return SVGA3D_BLENDOP_BLENDFACTOR;
+   case PIPE_BLENDFACTOR_INV_CONST_COLOR: return SVGA3D_BLENDOP_INVBLENDFACTOR;
+   case PIPE_BLENDFACTOR_CONST_ALPHA:     return SVGA3D_BLENDOP_BLENDFACTOR; /* ? */
+   case PIPE_BLENDFACTOR_INV_CONST_ALPHA: return SVGA3D_BLENDOP_INVBLENDFACTOR; /* ? */
+   default:
+      assert(0);
+      return SVGA3D_BLENDOP_ZERO;
+   }
+}
+
+static INLINE unsigned
+svga_translate_blend_func(unsigned mode)
+{
+   switch (mode) {
+   case PIPE_BLEND_ADD:              return SVGA3D_BLENDEQ_ADD;
+   case PIPE_BLEND_SUBTRACT:         return SVGA3D_BLENDEQ_SUBTRACT;
+   case PIPE_BLEND_REVERSE_SUBTRACT: return SVGA3D_BLENDEQ_REVSUBTRACT;
+   case PIPE_BLEND_MIN:              return SVGA3D_BLENDEQ_MINIMUM;
+   case PIPE_BLEND_MAX:              return SVGA3D_BLENDEQ_MAXIMUM;
+   default:
+      assert(0);
+      return SVGA3D_BLENDEQ_ADD;
+   }
+}
+
+
+static void *
+svga_create_blend_state(struct pipe_context *pipe,
+                        const struct pipe_blend_state *templ)
+{
+   struct svga_blend_state *blend = CALLOC_STRUCT( svga_blend_state );
+   unsigned i;
+
+ 
+   /* Fill in the per-rendertarget blend state.  We currently only
+    * have one rendertarget.
+    */
+   for (i = 0; i < 1; i++) {
+      /* No way to set this in SVGA3D, and no way to correctly implement it on
+       * top of D3D9 API.  Instead we try to simulate with various blend modes.
+       */
+      if (templ->logicop_enable) {
+         switch (templ->logicop_func) {
+         case PIPE_LOGICOP_XOR:
+            blend->need_white_fragments = TRUE;
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_ONE;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_ONE;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_SUBTRACT;
+            break;
+         case PIPE_LOGICOP_CLEAR:
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_ZERO;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_ZERO;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_MINIMUM;
+            break;
+         case PIPE_LOGICOP_COPY:
+            blend->rt[i].blend_enable = FALSE;
+            break;
+         case PIPE_LOGICOP_COPY_INVERTED:
+            blend->rt[i].blend_enable   = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_INVSRCCOLOR;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_ZERO;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_ADD;
+            break;
+         case PIPE_LOGICOP_NOOP:
+            blend->rt[i].blend_enable   = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_ZERO;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_DESTCOLOR;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_ADD;
+            break;
+         case PIPE_LOGICOP_SET:
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_ONE;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_ONE;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_MAXIMUM;
+            break;
+         case PIPE_LOGICOP_INVERT:
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_INVSRCCOLOR;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_ZERO;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_ADD;
+            break;
+         case PIPE_LOGICOP_AND:
+            /* Approximate with minimum - works for the 0 & anything case: */
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_SRCCOLOR;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_DESTCOLOR;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_MINIMUM;
+            break;
+         case PIPE_LOGICOP_AND_REVERSE:
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_SRCCOLOR;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_INVDESTCOLOR;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_MINIMUM;
+            break;
+         case PIPE_LOGICOP_AND_INVERTED:
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_INVSRCCOLOR;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_DESTCOLOR;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_MINIMUM;
+            break;
+         case PIPE_LOGICOP_OR:
+            /* Approximate with maximum - works for the 1 | anything case: */
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_SRCCOLOR;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_DESTCOLOR;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_MAXIMUM;
+            break;
+         case PIPE_LOGICOP_OR_REVERSE:
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_SRCCOLOR;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_INVDESTCOLOR;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_MAXIMUM;
+            break;
+         case PIPE_LOGICOP_OR_INVERTED:
+            blend->rt[i].blend_enable = TRUE;
+            blend->rt[i].srcblend       = SVGA3D_BLENDOP_INVSRCCOLOR;
+            blend->rt[i].dstblend       = SVGA3D_BLENDOP_DESTCOLOR;
+            blend->rt[i].blendeq        = SVGA3D_BLENDEQ_MAXIMUM;
+            break;
+         case PIPE_LOGICOP_NAND:
+         case PIPE_LOGICOP_NOR:
+         case PIPE_LOGICOP_EQUIV:
+            /* Fill these in with plausible values */
+            blend->rt[i].blend_enable = FALSE;
+            break;
+         default:
+            assert(0);
+            break;
+         }
+      }
+      else {
+         blend->rt[i].blend_enable   = templ->blend_enable;
+
+         if (templ->blend_enable) {
+            blend->rt[i].srcblend       = svga_translate_blend_factor(templ->rgb_src_factor);
+            blend->rt[i].dstblend       = svga_translate_blend_factor(templ->rgb_dst_factor);
+            blend->rt[i].blendeq        = svga_translate_blend_func(templ->rgb_func);
+            blend->rt[i].srcblend_alpha = svga_translate_blend_factor(templ->alpha_src_factor);
+            blend->rt[i].dstblend_alpha = svga_translate_blend_factor(templ->alpha_dst_factor);
+            blend->rt[i].blendeq_alpha  = svga_translate_blend_func(templ->alpha_func);
+
+            if (blend->rt[i].srcblend_alpha != blend->rt[i].srcblend ||
+                blend->rt[i].dstblend_alpha != blend->rt[i].dstblend ||
+                blend->rt[i].blendeq_alpha  != blend->rt[i].blendeq)
+            {
+               blend->rt[i].separate_alpha_blend_enable = TRUE;
+            }
+         }
+      }
+
+      blend->rt[i].writemask = templ->colormask;
+   }
+
+   return blend;
+}
+
+static void svga_bind_blend_state(struct pipe_context *pipe,
+                                  void *blend)
+{
+   struct svga_context *svga = svga_context(pipe);
+
+   svga->curr.blend = (struct svga_blend_state*)blend;
+   svga->dirty |= SVGA_NEW_BLEND;
+}
+
+
+static void svga_delete_blend_state(struct pipe_context *pipe, void *blend)
+{
+   FREE(blend);
+}
+
+static void svga_set_blend_color( struct pipe_context *pipe,
+                                  const struct pipe_blend_color *blend_color )
+{
+   struct svga_context *svga = svga_context(pipe);
+
+   svga->curr.blend_color = *blend_color;
+
+   svga->dirty |= SVGA_NEW_BLEND;
+}
+
+
+void svga_init_blend_functions( struct svga_context *svga )
+{
+   svga->pipe.create_blend_state = svga_create_blend_state;
+   svga->pipe.bind_blend_state = svga_bind_blend_state;
+   svga->pipe.delete_blend_state = svga_delete_blend_state;
+
+   svga->pipe.set_blend_color = svga_set_blend_color;
+}
+
+
+