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authorKeith Whitwell <[email protected]>2000-11-05 18:24:40 +0000
committerKeith Whitwell <[email protected]>2000-11-05 18:24:40 +0000
commitcd03ed4f54444d96e4e47cdb118a3dfd94d92bb0 (patch)
tree57d9620635286b4ee4b8adf950014113d5961017 /src/mesa/swrast/swrast.h
parent7c20642b1091df1aab7d9076a3fe2fb11c6f011c (diff)
Reorganized software rasterizer as a module which manages its own state,
with tighter interfaces with the rest of the world. Proper documentation to come.
Diffstat (limited to 'src/mesa/swrast/swrast.h')
-rw-r--r--src/mesa/swrast/swrast.h139
1 files changed, 91 insertions, 48 deletions
diff --git a/src/mesa/swrast/swrast.h b/src/mesa/swrast/swrast.h
index 4e8627e6955..c567d799784 100644
--- a/src/mesa/swrast/swrast.h
+++ b/src/mesa/swrast/swrast.h
@@ -1,13 +1,83 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 3.5
+ *
+ * Copyright (C) 1999 Brian Paul 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
+ * BRIAN PAUL 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 <[email protected]>
+ */
+
#ifndef SWRAST_H
#define SWRAST_H
#include "types.h"
-/* These are the functions exported from swrast. (more to come)
+/* The software rasterizer now uses this format for vertices. Thus a
+ * 'RasterSetup' stage or other translation is required between the
+ * tnl module and the swrast rasterization functions. This serves to
+ * isolate the swrast module from the internals of the tnl module, and
+ * improve its usefulness as a fallback mechanism for hardware
+ * drivers.
+ *
+ * Full software drivers:
+ * - Register the rastersetup and triangle functions from
+ * utils/software_helper.
+ * - On statechange, update the rasterization pointers in that module.
+ *
+ * Rasterization hardware drivers:
+ * - Keep native rastersetup.
+ * - Implement native twoside,offset and unfilled triangle setup.
+ * - Implement a translator from native vertices to swrast vertices.
+ * - On partial fallback (mix of accelerated and unaccelerated
+ * prims), call a pass-through function which translates native
+ * vertices to SWvertices and calls the appropriate swrast function.
+ * - On total fallback (vertex format insufficient for state or all
+ * primitives unaccelerated), hook in swrast_setup instead.
+ */
+typedef struct {
+ GLfloat win[4];
+ GLfloat eye[4]; /* for GL_EXT_point_param only */
+ GLfloat texcoord[MAX_TEXTURE_UNITS][4];
+ GLchan color[4];
+ GLchan specular[4];
+ GLfloat fog;
+ GLuint index;
+} SWvertex;
+
+
+
+
+/* These are the public-access functions exported from swrast.
*/
void
_swrast_alloc_buffers( GLcontext *ctx );
+GLboolean
+_swrast_CreateContext( GLcontext *ctx );
+
+void
+_swrast_DestroyContext( GLcontext *ctx );
+
+
+
void
_swrast_Bitmap( GLcontext *ctx,
@@ -47,62 +117,35 @@ _swrast_Accum( GLcontext *ctx, GLenum op,
GLfloat value, GLint xpos, GLint ypos,
GLint width, GLint height );
-void
-_swrast_set_line_function( GLcontext *ctx );
-
-void
-_swrast_set_point_function( GLcontext *ctx );
-
-void
-_swrast_set_triangle_function( GLcontext *ctx );
-
-void
-_swrast_set_quad_function( GLcontext *ctx );
-
-void
-_swrast_flush( GLcontext *ctx );
-
-GLboolean
-_swrast_create_context( GLcontext *ctx );
-
-void
-_swrast_destroy_context( GLcontext *ctx );
+/* Get a pointer to the stipple counter.
+ */
+GLuint *
+_swrast_get_stipple_counter_ref( GLcontext *ctx );
-/* Replace:
+/* These will always render the correct point/line/triangle for the
+ * current state.
*/
void
-_swrast_set_texture_sampler( struct gl_texture_object *t );
-
-
+_swrast_Point( GLcontext *ctx, SWvertex *v );
-#define _SWRAST_NEW_TRIANGLE (_NEW_RENDERMODE| \
- _NEW_POLYGON| \
- _NEW_DEPTH| \
- _NEW_STENCIL| \
- _NEW_COLOR| \
- _NEW_TEXTURE| \
- _NEW_HINT| \
- _SWRAST_NEW_RASTERMASK| \
- _NEW_LIGHT| \
- _NEW_FOG)
-
-#define _SWRAST_NEW_LINE (_NEW_RENDERMODE| \
- _NEW_LINE| \
- _NEW_TEXTURE| \
- _NEW_LIGHT| \
- _NEW_FOG| \
- _NEW_DEPTH)
-
-#define _SWRAST_NEW_POINT (_NEW_RENDERMODE | \
- _NEW_POINT | \
- _NEW_TEXTURE | \
- _NEW_LIGHT | \
- _NEW_FOG)
+void
+_swrast_Line( GLcontext *ctx, SWvertex *v0, SWvertex *v1 );
+void
+_swrast_Triangle( GLcontext *ctx, SWvertex *v0, SWvertex *v1, SWvertex *v2 );
+void
+_swrast_Quad( GLcontext *ctx, SWvertex *v0, SWvertex *v1, SWvertex *v2,
+ SWvertex *v3);
+void
+_swrast_flush( GLcontext *ctx );
+/* Tell the software rasterizer about core state changes.
+ */
+void
+_swrast_InvalidateState( GLcontext *ctx, GLuint new_state );
#endif