+/*
+ * 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 <keithw@valinux.com>
+ */
+
#ifndef SWRAST_H
#define SWRAST_H
-#include "types.h"
+#include "mtypes.h"
+
+
+
+/* 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 texcoord[MAX_TEXTURE_UNITS][4];
+ GLchan color[4];
+ GLchan specular[4];
+ GLfloat fog;
+ GLuint index;
+ GLfloat pointSize;
+} SWvertex;
+
+
+
-/* These are the functions exported from swrast. (more to come)
+/* These are the public-access functions exported from swrast.
*/
-void
+extern void
_swrast_alloc_buffers( GLcontext *ctx );
+extern GLboolean
+_swrast_CreateContext( GLcontext *ctx );
-void
-_swrast_Bitmap( GLcontext *ctx,
+extern void
+_swrast_DestroyContext( GLcontext *ctx );
+
+
+
+extern void
+_swrast_Bitmap( GLcontext *ctx,
GLint px, GLint py,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap );
-void
-_swrast_CopyPixels( GLcontext *ctx,
- GLint srcx, GLint srcy,
- GLint destx, GLint desty,
+extern void
+_swrast_CopyPixels( GLcontext *ctx,
+ GLint srcx, GLint srcy,
+ GLint destx, GLint desty,
GLsizei width, GLsizei height,
GLenum type );
-void
-_swrast_DrawPixels( GLcontext *ctx,
+extern void
+_swrast_DrawPixels( GLcontext *ctx,
GLint x, GLint y,
GLsizei width, GLsizei height,
- GLenum format, GLenum type,
+ GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels );
-void
+extern void
_swrast_ReadPixels( GLcontext *ctx,
GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
GLvoid *pixels );
-void
+extern void
_swrast_Clear( GLcontext *ctx, GLbitfield mask, GLboolean all,
GLint x, GLint y, GLint width, GLint height );
-void
-_swrast_Accum( GLcontext *ctx, GLenum op,
- GLfloat value, GLint xpos, GLint ypos,
+extern void
+_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 );
-
-
-/* Replace:
+/* Reset the stipple counter
*/
-void
-_swrast_set_texture_sampler( struct gl_texture_object *t );
+extern void
+_swrast_ResetLineStipple( GLcontext *ctx );
+/* These will always render the correct point/line/triangle for the
+ * current state.
+ *
+ * For flatshaded primitives, the provoking vertex is the final one.
+ */
+extern void
+_swrast_Point( GLcontext *ctx, const SWvertex *v );
+extern void
+_swrast_Line( GLcontext *ctx, const SWvertex *v0, const SWvertex *v1 );
-#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)
+extern void
+_swrast_Triangle( GLcontext *ctx, const SWvertex *v0,
+ const SWvertex *v1, const SWvertex *v2 );
-#define _SWRAST_NEW_LINE (_NEW_RENDERMODE| \
- _NEW_LINE| \
- _NEW_TEXTURE| \
- _NEW_LIGHT| \
- _NEW_FOG| \
- _NEW_DEPTH)
+extern void
+_swrast_Quad( GLcontext *ctx,
+ const SWvertex *v0, const SWvertex *v1,
+ const SWvertex *v2, const SWvertex *v3);
-#define _SWRAST_NEW_POINT (_NEW_RENDERMODE | \
- _NEW_POINT | \
- _NEW_TEXTURE | \
- _NEW_LIGHT | \
- _NEW_FOG)
+extern void
+_swrast_flush( GLcontext *ctx );
+/* Tell the software rasterizer about core state changes.
+ */
+extern void
+_swrast_InvalidateState( GLcontext *ctx, GLuint new_state );
+/* Configure software rasterizer to match hardware rasterizer characteristics:
+ */
+extern void
+_swrast_allow_vertex_fog( GLcontext *ctx, GLboolean value );
+extern void
+_swrast_allow_pixel_fog( GLcontext *ctx, GLboolean value );
+/* Debug:
+ */
+extern void
+_swrast_print_vertex( GLcontext *ctx, const SWvertex *v );
#endif
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