svga: Add svga driver

1 files changed, 243 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_pipe_sampler.c b/src/gallium/drivers/svga/svga_pipe_sampler.c
new file mode 100644
index 00000000000..3eeca6b784b
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_pipe_sampler.c
@@ -0,0 +1,243 @@
+/**********************************************************
+ * 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 "util/u_pack_color.h"
+#include "tgsi/tgsi_parse.h"
+
+#include "svga_context.h"
+#include "svga_screen_texture.h"
+#include "svga_state.h"
+
+#include "svga_hw_reg.h"
+
+#include "svga_debug.h"
+
+static INLINE unsigned
+translate_wrap_mode(unsigned wrap)
+{
+   switch (wrap) {
+   case PIPE_TEX_WRAP_REPEAT: 
+      return SVGA3D_TEX_ADDRESS_WRAP;
+
+   case PIPE_TEX_WRAP_CLAMP: 
+      return SVGA3D_TEX_ADDRESS_CLAMP;
+
+   case PIPE_TEX_WRAP_CLAMP_TO_EDGE: 
+      /* Unfortunately SVGA3D_TEX_ADDRESS_EDGE not respected by
+       * hardware.
+       */
+      return SVGA3D_TEX_ADDRESS_CLAMP;
+
+   case PIPE_TEX_WRAP_CLAMP_TO_BORDER: 
+      return SVGA3D_TEX_ADDRESS_BORDER;
+
+   case PIPE_TEX_WRAP_MIRROR_REPEAT: 
+      return SVGA3D_TEX_ADDRESS_MIRROR;
+
+   case PIPE_TEX_WRAP_MIRROR_CLAMP:  
+   case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:   
+   case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: 
+      return SVGA3D_TEX_ADDRESS_MIRRORONCE;
+
+   default:
+      assert(0);
+      return SVGA3D_TEX_ADDRESS_WRAP;
+   }
+}
+
+static INLINE unsigned translate_img_filter( unsigned filter )
+{
+   switch (filter) {
+   case PIPE_TEX_FILTER_NEAREST: return SVGA3D_TEX_FILTER_NEAREST;
+   case PIPE_TEX_FILTER_LINEAR:  return SVGA3D_TEX_FILTER_LINEAR;
+   case PIPE_TEX_FILTER_ANISO:   return SVGA3D_TEX_FILTER_ANISOTROPIC;
+   default:
+      assert(0);
+      return SVGA3D_TEX_FILTER_NEAREST;
+   }
+}
+
+static INLINE unsigned translate_mip_filter( unsigned filter )
+{
+   switch (filter) {
+   case PIPE_TEX_MIPFILTER_NONE:    return SVGA3D_TEX_FILTER_NONE;
+   case PIPE_TEX_MIPFILTER_NEAREST: return SVGA3D_TEX_FILTER_NEAREST;
+   case PIPE_TEX_MIPFILTER_LINEAR:  return SVGA3D_TEX_FILTER_LINEAR;
+   default:
+      assert(0);
+      return SVGA3D_TEX_FILTER_NONE;
+   }
+}
+
+static void *
+svga_create_sampler_state(struct pipe_context *pipe,
+                          const struct pipe_sampler_state *sampler)
+{
+   struct svga_context *svga = svga_context(pipe);
+   struct svga_sampler_state *cso = CALLOC_STRUCT( svga_sampler_state );
+   
+   cso->mipfilter = translate_mip_filter(sampler->min_mip_filter);
+   cso->magfilter = translate_img_filter( sampler->mag_img_filter );
+   cso->minfilter = translate_img_filter( sampler->min_img_filter );
+   cso->aniso_level = MAX2( (unsigned) sampler->max_anisotropy, 1 );
+   cso->lod_bias = sampler->lod_bias;
+   cso->addressu = translate_wrap_mode(sampler->wrap_s);
+   cso->addressv = translate_wrap_mode(sampler->wrap_t);
+   cso->addressw = translate_wrap_mode(sampler->wrap_r);
+   cso->normalized_coords = sampler->normalized_coords;
+   cso->compare_mode = sampler->compare_mode;
+   cso->compare_func = sampler->compare_func;
+
+   {
+      ubyte r = float_to_ubyte(sampler->border_color[0]);
+      ubyte g = float_to_ubyte(sampler->border_color[1]);
+      ubyte b = float_to_ubyte(sampler->border_color[2]);
+      ubyte a = float_to_ubyte(sampler->border_color[3]);
+
+      util_pack_color_ub( r, g, b, a,
+                          PIPE_FORMAT_B8G8R8A8_UNORM,
+                          &cso->bordercolor );
+   }
+
+   /* No SVGA3D support for:
+    *    - min/max LOD clamping
+    */
+   cso->min_lod = 0;
+   cso->view_min_lod = MAX2(sampler->min_lod, 0);
+   cso->view_max_lod = MAX2(sampler->max_lod, 0);
+
+   /* Use min_mipmap */
+   if (svga->debug.use_min_mipmap) {
+      if (cso->view_min_lod == cso->view_max_lod) {
+         cso->min_lod = cso->view_min_lod;
+         cso->view_min_lod = 0;
+         cso->view_max_lod = 1000; /* Just a high number */
+         cso->mipfilter = SVGA3D_TEX_FILTER_NONE;
+      }
+   }
+
+   SVGA_DBG(DEBUG_VIEWS, "min %u, view(min %u, max %u) lod, mipfilter %s\n",
+            cso->min_lod, cso->view_min_lod, cso->view_max_lod,
+            cso->mipfilter == SVGA3D_TEX_FILTER_NONE ? "SVGA3D_TEX_FILTER_NONE" : "SOMETHING");
+
+   return cso;
+}
+
+static void svga_bind_sampler_states(struct pipe_context *pipe,
+                                     unsigned num, void **sampler)
+{
+   struct svga_context *svga = svga_context(pipe);
+   unsigned i;
+
+   assert(num <= PIPE_MAX_SAMPLERS);
+
+   /* Check for no-op */
+   if (num == svga->curr.num_samplers &&
+       !memcmp(svga->curr.sampler, sampler, num * sizeof(void *))) {
+      debug_printf("sampler noop\n");
+      return;
+   }
+
+   for (i = 0; i < num; i++)
+      svga->curr.sampler[i] = sampler[i];
+
+   for (i = num; i < svga->curr.num_samplers; i++)
+      svga->curr.sampler[i] = NULL;
+
+   svga->curr.num_samplers = num;
+   svga->dirty |= SVGA_NEW_SAMPLER;
+}
+
+static void svga_delete_sampler_state(struct pipe_context *pipe,
+                                      void *sampler)
+{
+   FREE(sampler);
+}
+
+
+static void svga_set_sampler_textures(struct pipe_context *pipe,
+                                      unsigned num,
+                                      struct pipe_texture **texture)
+{
+   struct svga_context *svga = svga_context(pipe);
+   unsigned flag_1d = 0;
+   unsigned flag_srgb = 0;
+   uint i;
+
+   assert(num <= PIPE_MAX_SAMPLERS);
+
+   /* Check for no-op */
+   if (num == svga->curr.num_textures &&
+       !memcmp(svga->curr.texture, texture, num * sizeof(struct pipe_texture *))) {
+      if (0) debug_printf("texture noop\n");
+      return;
+   }
+
+   for (i = 0; i < num; i++) {
+      pipe_texture_reference(&svga->curr.texture[i],
+                             texture[i]);
+
+      if (!texture[i])
+         continue;
+
+      if (texture[i]->format == PIPE_FORMAT_A8R8G8B8_SRGB)
+         flag_srgb |= 1 << i;
+
+      if (texture[i]->target == PIPE_TEXTURE_1D)
+         flag_1d |= 1 << i;
+   }
+
+   for (i = num; i < svga->curr.num_textures; i++)
+      pipe_texture_reference(&svga->curr.texture[i],
+                             NULL);
+
+   svga->curr.num_textures = num;
+   svga->dirty |= SVGA_NEW_TEXTURE_BINDING;
+
+   if (flag_srgb != svga->curr.tex_flags.flag_srgb ||
+       flag_1d != svga->curr.tex_flags.flag_1d) 
+   {
+      svga->dirty |= SVGA_NEW_TEXTURE_FLAGS;
+      svga->curr.tex_flags.flag_1d = flag_1d;
+      svga->curr.tex_flags.flag_srgb = flag_srgb;
+   }  
+}
+
+
+
+void svga_init_sampler_functions( struct svga_context *svga )
+{
+   svga->pipe.create_sampler_state = svga_create_sampler_state;
+   svga->pipe.bind_sampler_states = svga_bind_sampler_states;
+   svga->pipe.delete_sampler_state = svga_delete_sampler_state;
+   svga->pipe.set_sampler_textures = svga_set_sampler_textures;
+}
+
+
+