Checkpoint of a super-simplified i915 driver in the pipe model.

Doesn't yet compile, but when it does, it will only draw gouraud tris
and even those will be as simple as possible.  Needs some 'winsys' support
also before that can happen.

1 files changed, 238 insertions, 0 deletions

diff --git a/src/mesa/pipe/i915simple/i915_state.c b/src/mesa/pipe/i915simple/i915_state.c
new file mode 100644
index 0000000000..d732e879db
--- /dev/null
+++ b/src/mesa/pipe/i915simple/i915_state.c
@@ -0,0 +1,238 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 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.
+ * 
+ **************************************************************************/
+
+/* Authors:  Keith Whitwell <keith@tungstengraphics.com>
+ */
+#include "imports.h"
+
+#include "pipe/draw/draw_context.h"
+
+#include "i915_context.h"
+#include "i915_state.h"
+
+/* None of this state is actually used for anything yet.
+ */
+static void i915_set_blend_state( struct pipe_context *pipe,
+			     const struct pipe_blend_state *blend )
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->blend = *blend;
+
+   i915->dirty |= I915_NEW_BLEND;
+}
+
+
+static void i915_set_blend_color( struct pipe_context *pipe,
+			     const struct pipe_blend_color *blend_color )
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->blend_color = *blend_color;
+
+   i915->dirty |= I915_NEW_BLEND;
+}
+
+
+/** XXX move someday?  Or consolidate all these simple state setters
+ * into one file.
+ */
+static void i915_set_depth_test_state(struct pipe_context *pipe,
+                              const struct pipe_depth_state *depth)
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->depth_test = *depth;
+
+   i915->dirty |= I915_NEW_DEPTH_TEST;
+}
+
+static void i915_set_alpha_test_state(struct pipe_context *pipe,
+                              const struct pipe_alpha_test_state *alpha)
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->alpha_test = *alpha;
+
+   i915->dirty |= I915_NEW_ALPHA_TEST;
+}
+
+static void i915_set_stencil_state(struct pipe_context *pipe,
+                           const struct pipe_stencil_state *stencil)
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->stencil = *stencil;
+
+   i915->dirty |= I915_NEW_STENCIL;
+}
+
+
+
+static void i915_set_scissor_state( struct pipe_context *pipe,
+                                 const struct pipe_scissor_state *scissor )
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   memcpy( &i915->scissor, scissor, sizeof(*scissor) );
+   i915->dirty |= I915_NEW_SCISSOR;
+}
+
+
+static void i915_set_polygon_stipple( struct pipe_context *pipe,
+                                   const struct pipe_poly_stipple *stipple )
+{
+}
+
+
+
+static void i915_set_fs_state( struct pipe_context *pipe,
+			   const struct pipe_fs_state *fs )
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   memcpy(&i915->fs, fs, sizeof(*fs));
+
+   i915->dirty |= I915_NEW_FS;
+}
+
+
+static void i915_set_sampler_state(struct pipe_context *pipe,
+                           GLuint unit,
+                           const struct pipe_sampler_state *sampler)
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   assert(unit < PIPE_MAX_SAMPLERS);
+   i915->sampler[unit] = *sampler;
+
+   i915->dirty |= I915_NEW_SAMPLER;
+}
+
+
+static void i915_set_texture_state(struct pipe_context *pipe,
+                           GLuint unit,
+                           struct pipe_texture_object *texture)
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   assert(unit < PIPE_MAX_SAMPLERS);
+   i915->texture[unit] = texture;  /* ptr, not struct */
+
+   i915->dirty |= I915_NEW_TEXTURE;
+}
+
+
+
+static void i915_set_framebuffer_state(struct pipe_context *pipe,
+                               const struct pipe_framebuffer_state *fb)
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->framebuffer = *fb; /* struct copy */
+
+   i915->dirty |= I915_NEW_FRAMEBUFFER;
+}
+
+
+
+
+static void i915_set_clear_color_state(struct pipe_context *pipe,
+                               const struct pipe_clear_color_state *clear)
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->clear_color = *clear; /* struct copy */
+}
+
+
+
+static void i915_set_clip_state( struct pipe_context *pipe,
+			     const struct pipe_clip_state *clip )
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   draw_set_clip_state(i915->draw, clip);
+
+   i915->dirty |= I915_NEW_CLIP;
+}
+
+
+
+/* Called when driver state tracker notices changes to the viewport
+ * matrix:
+ */
+static void i915_set_viewport_state( struct pipe_context *pipe,
+				     const struct pipe_viewport_state *viewport )
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->viewport = *viewport; /* struct copy */
+
+   /* pass the viewport info to the draw module */
+   draw_set_viewport_state(i915->draw, viewport);
+
+   /* Using tnl/ and vf/ modules is temporary while getting started.
+    * Full pipe will have vertex shader, vertex fetch of its own.
+    */
+   i915->dirty |= I915_NEW_VIEWPORT;
+
+}
+
+static void i915_set_setup_state( struct pipe_context *pipe,
+				      const struct pipe_setup_state *setup )
+{
+   struct i915_context *i915 = i915_context(pipe);
+
+   i915->setup = *setup;
+
+   /* pass-through to draw module */
+   draw_set_setup_state(i915->draw, setup);
+
+   i915->dirty |= I915_NEW_SETUP;
+}
+
+
+void
+i915_init_state_functions( struct i915_context *i915 )
+{
+   i915->pipe.set_alpha_test_state = i915_set_alpha_test_state;
+   i915->pipe.set_blend_color = i915_set_blend_color;
+   i915->pipe.set_blend_state = i915_set_blend_state;
+   i915->pipe.set_clip_state = i915_set_clip_state;
+   i915->pipe.set_clear_color_state = i915_set_clear_color_state;
+   i915->pipe.set_depth_state = i915_set_depth_test_state;
+   i915->pipe.set_framebuffer_state = i915_set_framebuffer_state;
+   i915->pipe.set_fs_state = i915_set_fs_state;
+   i915->pipe.set_polygon_stipple = i915_set_polygon_stipple;
+   i915->pipe.set_sampler_state = i915_set_sampler_state;
+   i915->pipe.set_scissor_state = i915_set_scissor_state;
+   i915->pipe.set_setup_state = i915_set_setup_state;
+   i915->pipe.set_stencil_state = i915_set_stencil_state;
+   i915->pipe.set_texture_state = i915_set_texture_state;
+   i915->pipe.set_viewport_state = i915_set_viewport_state;
+}