1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 #include "pipe/p_util.h"
30 #include "pipe/p_shader_tokens.h"
31 #include "draw/draw_context.h"
32 #include "draw/draw_vertex.h"
33 #include "i915_context.h"
34 #include "i915_state.h"
41 * Determine the hardware vertex layout.
42 * Depends on vertex/fragment shader state.
44 static void calculate_vertex_layout( struct i915_context
*i915
)
46 const struct i915_fragment_shader
*fs
= i915
->fs
;
47 const enum interp_mode colorInterp
= i915
->rasterizer
->color_interp
;
48 struct vertex_info vinfo
;
49 boolean texCoords
[8], colors
[2], fog
, needW
;
53 memset(texCoords
, 0, sizeof(texCoords
));
54 colors
[0] = colors
[1] = fog
= needW
= FALSE
;
55 memset(&vinfo
, 0, sizeof(vinfo
));
57 /* Determine which fragment program inputs are needed. Setup HW vertex
58 * layout below, in the HW-specific attribute order.
60 for (i
= 0; i
< fs
->info
.num_inputs
; i
++) {
61 switch (fs
->info
.input_semantic_name
[i
]) {
62 case TGSI_SEMANTIC_POSITION
:
64 case TGSI_SEMANTIC_COLOR
:
65 assert(fs
->info
.input_semantic_index
[i
] < 2);
66 colors
[fs
->info
.input_semantic_index
[i
]] = TRUE
;
68 case TGSI_SEMANTIC_GENERIC
:
69 /* usually a texcoord */
71 const uint unit
= fs
->info
.input_semantic_index
[i
];
73 texCoords
[unit
] = TRUE
;
77 case TGSI_SEMANTIC_FOG
:
87 src
= draw_find_vs_output(i915
->draw
, TGSI_SEMANTIC_POSITION
, 0);
89 draw_emit_vertex_attr(&vinfo
, EMIT_4F
, INTERP_LINEAR
, src
);
90 vinfo
.hwfmt
[0] |= S4_VFMT_XYZW
;
91 vinfo
.emit
[0] = EMIT_4F
;
94 draw_emit_vertex_attr(&vinfo
, EMIT_3F
, INTERP_LINEAR
, src
);
95 vinfo
.hwfmt
[0] |= S4_VFMT_XYZ
;
96 vinfo
.emit
[0] = EMIT_3F
;
99 /* hardware point size */
104 src
= draw_find_vs_output(i915
->draw
, TGSI_SEMANTIC_COLOR
, 0);
105 draw_emit_vertex_attr(&vinfo
, EMIT_4UB
, colorInterp
, src
);
106 vinfo
.hwfmt
[0] |= S4_VFMT_COLOR
;
109 /* secondary color */
111 src
= draw_find_vs_output(i915
->draw
, TGSI_SEMANTIC_COLOR
, 1);
112 draw_emit_vertex_attr(&vinfo
, EMIT_4UB
, colorInterp
, src
);
113 vinfo
.hwfmt
[0] |= S4_VFMT_SPEC_FOG
;
116 /* fog coord, not fog blend factor */
118 src
= draw_find_vs_output(i915
->draw
, TGSI_SEMANTIC_FOG
, 0);
119 draw_emit_vertex_attr(&vinfo
, EMIT_1F
, INTERP_PERSPECTIVE
, src
);
120 vinfo
.hwfmt
[0] |= S4_VFMT_FOG_PARAM
;
124 for (i
= 0; i
< 8; i
++) {
127 hwtc
= TEXCOORDFMT_4D
;
128 src
= draw_find_vs_output(i915
->draw
, TGSI_SEMANTIC_GENERIC
, i
);
129 draw_emit_vertex_attr(&vinfo
, EMIT_4F
, INTERP_PERSPECTIVE
, src
);
132 hwtc
= TEXCOORDFMT_NOT_PRESENT
;
134 vinfo
.hwfmt
[1] |= hwtc
<< (i
* 4);
137 draw_compute_vertex_size(&vinfo
);
139 if (memcmp(&i915
->current
.vertex_info
, &vinfo
, sizeof(vinfo
))) {
140 /* Need to set this flag so that the LIS2/4 registers get set.
141 * It also means the i915_update_immediate() function must be called
142 * after this one, in i915_update_derived().
144 i915
->dirty
|= I915_NEW_VERTEX_FORMAT
;
146 memcpy(&i915
->current
.vertex_info
, &vinfo
, sizeof(vinfo
));
153 /* Hopefully this will remain quite simple, otherwise need to pull in
154 * something like the state tracker mechanism.
156 void i915_update_derived( struct i915_context
*i915
)
158 if (i915
->dirty
& (I915_NEW_RASTERIZER
| I915_NEW_FS
| I915_NEW_VS
))
159 calculate_vertex_layout( i915
);
161 if (i915
->dirty
& (I915_NEW_SAMPLER
| I915_NEW_TEXTURE
))
162 i915_update_samplers(i915
);
164 if (i915
->dirty
& I915_NEW_TEXTURE
)
165 i915_update_textures(i915
);
168 i915_update_immediate( i915
);
171 i915_update_dynamic( i915
);
173 if (i915
->dirty
& I915_NEW_FS
) {
174 i915
->hardware_dirty
|= I915_HW_PROGRAM
; /* XXX right? */
177 /* HW emit currently references framebuffer state directly:
179 if (i915
->dirty
& I915_NEW_FRAMEBUFFER
)
180 i915
->hardware_dirty
|= I915_HW_STATIC
;