1 files changed, 240 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915/i915_context.c b/src/gallium/drivers/i915/i915_context.c
new file mode 100644
index 00000000000..94c8aee30fe
--- /dev/null
+++ b/src/gallium/drivers/i915/i915_context.c
@@ -0,0 +1,240 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 "i915_context.h"
+#include "i915_state.h"
+#include "i915_screen.h"
+#include "i915_batch.h"
+#include "i915_texture.h"
+#include "i915_reg.h"
+
+#include "draw/draw_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/internal/p_winsys_screen.h"
+#include "pipe/p_inlines.h"
+#include "util/u_memory.h"
+#include "pipe/p_screen.h"
+
+
+/*
+ * Draw functions
+ */
+
+
+static boolean
+i915_draw_range_elements(struct pipe_context *pipe,
+                         struct pipe_buffer *indexBuffer,
+                         unsigned indexSize,
+                         unsigned min_index,
+                         unsigned max_index,
+                         unsigned prim, unsigned start, unsigned count)
+{
+   struct i915_context *i915 = i915_context(pipe);
+   struct draw_context *draw = i915->draw;
+   unsigned i;
+
+   if (i915->dirty)
+      i915_update_derived(i915);
+
+   /*
+    * Map vertex buffers
+    */
+   for (i = 0; i < i915->num_vertex_buffers; i++) {
+      void *buf = pipe_buffer_map(pipe->screen, i915->vertex_buffer[i].buffer,
+                                  PIPE_BUFFER_USAGE_CPU_READ);
+      draw_set_mapped_vertex_buffer(draw, i, buf);
+   }
+
+   /*
+    * Map index buffer, if present
+    */
+   if (indexBuffer) {
+      void *mapped_indexes = pipe_buffer_map(pipe->screen, indexBuffer,
+                                             PIPE_BUFFER_USAGE_CPU_READ);
+      draw_set_mapped_element_buffer_range(draw, indexSize,
+                                           min_index,
+                                           max_index,
+                                           mapped_indexes);
+   } else {
+      draw_set_mapped_element_buffer(draw, 0, NULL);
+   }
+
+
+   draw_set_mapped_constant_buffer(draw,
+                                   i915->current.constants[PIPE_SHADER_VERTEX],
+                                   (i915->current.num_user_constants[PIPE_SHADER_VERTEX] * 
+                                      4 * sizeof(float)));
+
+   /*
+    * Do the drawing
+    */
+   draw_arrays(i915->draw, prim, start, count);
+
+   /*
+    * unmap vertex/index buffers
+    */
+   for (i = 0; i < i915->num_vertex_buffers; i++) {
+      pipe_buffer_unmap(pipe->screen, i915->vertex_buffer[i].buffer);
+      draw_set_mapped_vertex_buffer(draw, i, NULL);
+   }
+
+   if (indexBuffer) {
+      pipe_buffer_unmap(pipe->screen, indexBuffer);
+      draw_set_mapped_element_buffer_range(draw, 0, start, start + count - 1, NULL);
+   }
+
+   return TRUE;
+}
+
+static boolean
+i915_draw_elements(struct pipe_context *pipe,
+                   struct pipe_buffer *indexBuffer,
+                   unsigned indexSize,
+                   unsigned prim, unsigned start, unsigned count)
+{
+   return i915_draw_range_elements(pipe, indexBuffer,
+                                   indexSize,
+                                   0, 0xffffffff,
+                                   prim, start, count);
+}
+
+static boolean
+i915_draw_arrays(struct pipe_context *pipe,
+                 unsigned prim, unsigned start, unsigned count)
+{
+   return i915_draw_elements(pipe, NULL, 0, prim, start, count);
+}
+
+
+/*
+ * Is referenced functions
+ */
+
+
+static unsigned int
+i915_is_texture_referenced(struct pipe_context *pipe,
+                           struct pipe_texture *texture,
+                           unsigned face, unsigned level)
+{
+   /**
+    * FIXME: Return the corrent result. We can't alays return referenced
+    *        since it causes a double flush within the vbo module.
+    */
+#if 0
+   return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
+#else
+   return 0;
+#endif
+}
+
+static unsigned int
+i915_is_buffer_referenced(struct pipe_context *pipe,
+                          struct pipe_buffer *buf)
+{
+   /*
+    * Since we never expose hardware buffers to the state tracker
+    * they can never be referenced, so this isn't a lie
+    */
+   return 0;
+}
+
+
+/*
+ * Generic context functions
+ */
+
+
+static void i915_destroy(struct pipe_context *pipe)
+{
+   struct i915_context *i915 = i915_context(pipe);
+   int i;
+
+   draw_destroy(i915->draw);
+   
+   if(i915->batch)
+      i915->iws->batchbuffer_destroy(i915->batch);
+
+   /* unbind framebuffer */
+   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
+      pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
+   }
+   pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
+
+   FREE(i915);
+}
+
+struct pipe_context *
+i915_create_context(struct pipe_screen *screen)
+{
+   struct i915_context *i915;
+
+   i915 = CALLOC_STRUCT(i915_context);
+   if (i915 == NULL)
+      return NULL;
+
+   i915->iws = i915_screen(screen)->iws;
+   i915->base.winsys = NULL;
+   i915->base.screen = screen;
+
+   i915->base.destroy = i915_destroy;
+
+   i915->base.clear = i915_clear;
+
+   i915->base.draw_arrays = i915_draw_arrays;
+   i915->base.draw_elements = i915_draw_elements;
+   i915->base.draw_range_elements = i915_draw_range_elements;
+
+   i915->base.is_texture_referenced = i915_is_texture_referenced;
+   i915->base.is_buffer_referenced = i915_is_buffer_referenced;
+
+   /*
+    * Create drawing context and plug our rendering stage into it.
+    */
+   i915->draw = draw_create();
+   assert(i915->draw);
+   if (!debug_get_bool_option("I915_NO_VBUF", FALSE)) {
+      draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
+   } else {
+      draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
+   }
+
+   i915_init_surface_functions(i915);
+   i915_init_state_functions(i915);
+   i915_init_flush_functions(i915);
+
+   draw_install_aaline_stage(i915->draw, &i915->base);
+   draw_install_aapoint_stage(i915->draw, &i915->base);
+
+   i915->dirty = ~0;
+   i915->hardware_dirty = ~0;
+
+   /* Batch stream debugging is a bit hacked up at the moment:
+    */
+   i915->batch = i915->iws->batchbuffer_create(i915->iws);
+
+   return &i915->base;
+}