svga: Add svga driver

1 files changed, 239 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_state_constants.c b/src/gallium/drivers/svga/svga_state_constants.c
new file mode 100644
index 0000000000..18cce7dde1
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_state_constants.c
@@ -0,0 +1,239 @@
+/**********************************************************
+ * 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 "svga_context.h"
+#include "svga_state.h"
+#include "svga_cmd.h"
+#include "svga_tgsi.h"
+#include "svga_debug.h"
+
+#include "svga_hw_reg.h"
+
+/***********************************************************************
+ * Hardware update 
+ */
+
+/* Convert from PIPE_SHADER_* to SVGA3D_SHADERTYPE_*
+ */
+static int svga_shader_type( int unit )
+{
+   return unit + 1;
+}
+
+
+static int emit_const( struct svga_context *svga,
+                       int unit,
+                       int i,
+                       const float *value )
+{
+   int ret = PIPE_OK;
+
+   if (memcmp(svga->state.hw_draw.cb[unit][i], value, 4 * sizeof(float)) != 0) {
+      if (SVGA_DEBUG & DEBUG_CONSTS)
+         debug_printf("%s %s %d: %f %f %f %f\n",
+                      __FUNCTION__,
+                      unit == PIPE_SHADER_VERTEX ? "VERT" : "FRAG",
+                      i,
+                      value[0],
+                      value[1],
+                      value[2],
+                      value[3]);
+
+      ret = SVGA3D_SetShaderConst( svga->swc, 
+                                   i,
+                                   svga_shader_type(unit),
+                                   SVGA3D_CONST_TYPE_FLOAT,
+                                   value );
+      if (ret)
+         return ret;
+
+      memcpy(svga->state.hw_draw.cb[unit][i], value, 4 * sizeof(float));
+   }
+   
+   return ret;
+}
+
+static int emit_consts( struct svga_context *svga,
+                        int offset,
+                        int unit )
+{
+   struct pipe_screen *screen = svga->pipe.screen;
+   unsigned count;
+   const float (*data)[4] = NULL;
+   unsigned i;
+   int ret = PIPE_OK;
+
+   if (svga->curr.cb[unit] == NULL)
+      goto done;
+
+   count = svga->curr.cb[unit]->size / (4 * sizeof(float));
+
+   data = (const float (*)[4])pipe_buffer_map(screen,
+                                              svga->curr.cb[unit],
+                                              PIPE_BUFFER_USAGE_CPU_READ);
+   if (data == NULL) {
+      ret = PIPE_ERROR_OUT_OF_MEMORY;
+      goto done;
+   }
+
+   for (i = 0; i < count; i++) {
+      ret = emit_const( svga, unit, offset + i, data[i] );
+      if (ret)
+         goto done;
+   }
+
+done:
+   if (data)
+      pipe_buffer_unmap(screen, svga->curr.cb[unit]);
+
+   return ret;
+}
+   
+static int emit_fs_consts( struct svga_context *svga,
+                           unsigned dirty )
+{
+   const struct svga_shader_result *result = svga->state.hw_draw.fs;
+   const struct svga_fs_compile_key *key = &result->key.fkey;
+   int ret = 0;
+
+   ret = emit_consts( svga, 0, PIPE_SHADER_FRAGMENT );
+   if (ret)
+      return ret;
+
+   /* The internally generated fragment shader for xor blending
+    * doesn't have a 'result' struct.  It should be fixed to avoid
+    * this special case, but work around it with a NULL check:
+    */
+   if (result != NULL &&
+       key->num_unnormalized_coords)
+   {
+      unsigned offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;
+      int i;
+
+      for (i = 0; i < key->num_textures; i++) {
+         if (key->tex[i].unnormalized) {
+            struct pipe_texture *tex = svga->curr.texture[i];
+            float data[4];
+
+            data[0] = 1.0 / (float)tex->width[0];
+            data[1] = 1.0 / (float)tex->height[0];
+            data[2] = 1.0;
+            data[3] = 1.0;
+
+            ret = emit_const( svga,
+                              PIPE_SHADER_FRAGMENT,
+                              key->tex[i].width_height_idx + offset,
+                              data );
+            if (ret)
+               return ret;
+         }
+      }
+
+      offset += key->num_unnormalized_coords;
+   }
+
+   return 0;
+}
+
+
+struct svga_tracked_state svga_hw_fs_parameters = 
+{
+   "hw fs params",
+   (SVGA_NEW_FS_CONST_BUFFER |
+    SVGA_NEW_FS_RESULT |
+    SVGA_NEW_TEXTURE_BINDING),
+   emit_fs_consts
+};
+
+/***********************************************************************
+ */
+
+static int emit_vs_consts( struct svga_context *svga,
+                           unsigned dirty )
+{
+   const struct svga_shader_result *result = svga->state.hw_draw.vs;
+   const struct svga_vs_compile_key *key = &result->key.vkey;
+   int ret = 0;
+   unsigned offset;
+
+   /* SVGA_NEW_VS_RESULT
+    */
+   if (result == NULL) 
+      return 0;
+
+   /* SVGA_NEW_VS_CONST_BUFFER 
+    */
+   ret = emit_consts( svga, 0, PIPE_SHADER_VERTEX );
+   if (ret)
+      return ret;
+
+   offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;
+
+   /* SVGA_NEW_VS_RESULT
+    */
+   if (key->need_prescale) {
+      ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
+                        svga->state.hw_clear.prescale.scale );
+      if (ret)
+         return ret;
+
+      ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
+                        svga->state.hw_clear.prescale.translate );
+      if (ret)
+         return ret;
+   }
+
+   /* SVGA_NEW_ZERO_STRIDE
+    */
+   if (key->zero_stride_vertex_elements) {
+      unsigned i, curr_zero_stride = 0;
+      for (i = 0; i < PIPE_MAX_ATTRIBS; ++i) {
+         if (key->zero_stride_vertex_elements & (1 << i)) {
+            ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
+                              svga->curr.zero_stride_constants +
+                              4 * curr_zero_stride );
+            if (ret)
+               return ret;
+            ++curr_zero_stride;
+         }
+      }
+   }
+
+   return 0;
+}
+
+
+struct svga_tracked_state svga_hw_vs_parameters = 
+{
+   "hw vs params",
+   (SVGA_NEW_VS_CONST_BUFFER |
+    SVGA_NEW_ZERO_STRIDE |
+    SVGA_NEW_VS_RESULT),
+   emit_vs_consts
+};
+