1 /**************************************************************************
3 Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
4 Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
5 VA Linux Systems Inc., Fremont, California.
7 The Weather Channel (TM) funded Tungsten Graphics to develop the
8 initial release of the Radeon 8500 driver under the XFree86 license.
9 This notice must be preserved.
13 Permission is hereby granted, free of charge, to any person obtaining
14 a copy of this software and associated documentation files (the
15 "Software"), to deal in the Software without restriction, including
16 without limitation the rights to use, copy, modify, merge, publish,
17 distribute, sublicense, and/or sell copies of the Software, and to
18 permit persons to whom the Software is furnished to do so, subject to
19 the following conditions:
21 The above copyright notice and this permission notice (including the
22 next paragraph) shall be included in all copies or substantial
23 portions of the Software.
25 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
28 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
29 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 **************************************************************************/
37 * Kevin E. Martin <martin@valinux.com>
38 * Gareth Hughes <gareth@valinux.com>
39 * Keith Whitwell <keith@tungstengraphics.com>
43 #include "main/glheader.h"
44 #include "main/texformat.h"
45 #include "main/renderbuffer.h"
46 #include "swrast/swrast.h"
47 #include "swrast/s_renderbuffer.h"
49 #include "radeon_common.h"
50 #include "radeon_span.h"
54 radeon_renderbuffer_map(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
56 struct radeon_renderbuffer
*rrb
= radeon_renderbuffer(rb
);
63 ctx
->Driver
.MapRenderbuffer(ctx
, rb
, 0, 0, rb
->Width
, rb
->Height
,
64 GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
,
68 rb
->RowStride
= stride
/ _mesa_get_format_bytes(rb
->Format
);
69 rb
->RowStrideBytes
= stride
;
73 radeon_renderbuffer_unmap(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
75 struct radeon_renderbuffer
*rrb
= radeon_renderbuffer(rb
);
79 ctx
->Driver
.UnmapRenderbuffer(ctx
, rb
);
83 rb
->RowStrideBytes
= 0;
87 radeon_map_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
91 radeon_print(RADEON_MEMORY
, RADEON_TRACE
,
95 /* check for render to textures */
96 for (i
= 0; i
< BUFFER_COUNT
; i
++)
97 radeon_renderbuffer_map(ctx
, fb
->Attachment
[i
].Renderbuffer
);
99 radeon_check_front_buffer_rendering(ctx
);
103 radeon_unmap_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
107 radeon_print(RADEON_MEMORY
, RADEON_TRACE
,
111 /* check for render to textures */
112 for (i
= 0; i
< BUFFER_COUNT
; i
++)
113 radeon_renderbuffer_unmap(ctx
, fb
->Attachment
[i
].Renderbuffer
);
115 radeon_check_front_buffer_rendering(ctx
);
118 static void radeonSpanRenderStart(struct gl_context
* ctx
)
120 radeonContextPtr rmesa
= RADEON_CONTEXT(ctx
);
123 radeon_firevertices(rmesa
);
125 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
126 if (ctx
->Texture
.Unit
[i
]._ReallyEnabled
) {
127 radeon_validate_texture_miptree(ctx
, ctx
->Texture
.Unit
[i
]._Current
);
128 radeon_swrast_map_texture_images(ctx
, ctx
->Texture
.Unit
[i
]._Current
);
132 radeon_map_framebuffer(ctx
, ctx
->DrawBuffer
);
133 if (ctx
->ReadBuffer
!= ctx
->DrawBuffer
)
134 radeon_map_framebuffer(ctx
, ctx
->ReadBuffer
);
137 static void radeonSpanRenderFinish(struct gl_context
* ctx
)
143 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++)
144 if (ctx
->Texture
.Unit
[i
]._ReallyEnabled
)
145 radeon_swrast_unmap_texture_images(ctx
, ctx
->Texture
.Unit
[i
]._Current
);
147 radeon_unmap_framebuffer(ctx
, ctx
->DrawBuffer
);
148 if (ctx
->ReadBuffer
!= ctx
->DrawBuffer
)
149 radeon_unmap_framebuffer(ctx
, ctx
->ReadBuffer
);
152 void radeonInitSpanFuncs(struct gl_context
* ctx
)
154 struct swrast_device_driver
*swdd
=
155 _swrast_GetDeviceDriverReference(ctx
);
156 swdd
->SpanRenderStart
= radeonSpanRenderStart
;
157 swdd
->SpanRenderFinish
= radeonSpanRenderFinish
;