1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
*
* 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
* on 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
* THE AUTHOR(S) AND/OR THEIR 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. */
#include "r300_context.h"
#include "r300_state.h"
static uint32_t translate_blend_function(int blend_func) {
switch (blend_func) {
case PIPE_BLEND_ADD:
return R300_COMB_FCN_ADD_CLAMP;
case PIPE_BLEND_SUBTRACT:
return R300_COMB_FCN_SUB_CLAMP;
case PIPE_BLEND_REVERSE_SUBTRACT:
return R300_COMB_FCN_RSUB_CLAMP;
case PIPE_BLEND_MIN:
return R300_COMB_FCN_MIN;
case PIPE_BLEND_MAX:
return R300_COMB_FCN_MAX;
default:
/* XXX should be unreachable, handle this */
break;
}
return 0;
}
/* XXX we can also offer the D3D versions of some of these... */
static uint32_t translate_blend_factor(int blend_fact) {
switch (blend_fact) {
case PIPE_BLENDFACTOR_ONE:
return R300_BLEND_GL_ONE;
case PIPE_BLENDFACTOR_SRC_COLOR:
return R300_BLEND_GL_SRC_COLOR;
case PIPE_BLENDFACTOR_SRC_ALPHA:
return R300_BLEND_GL_SRC_ALPHA;
case PIPE_BLENDFACTOR_DST_ALPHA:
return R300_BLEND_GL_DST_ALPHA;
case PIPE_BLENDFACTOR_DST_COLOR:
return R300_BLEND_GL_DST_COLOR;
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
return R300_BLEND_GL_SRC_ALPHA_SATURATE;
case PIPE_BLENDFACTOR_CONST_COLOR:
return R300_BLEND_GL_CONST_COLOR;
case PIPE_BLENDFACTOR_CONST_ALPHA:
return R300_BLEND_GL_CONST_ALPHA;
/* XXX WTF are these?
case PIPE_BLENDFACTOR_SRC1_COLOR:
case PIPE_BLENDFACTOR_SRC1_ALPHA: */
case PIPE_BLENDFACTOR_ZERO:
return R300_BLEND_GL_ZERO;
case PIPE_BLENDFACTOR_INV_SRC_COLOR:
return R300_BLEND_GL_ONE_MINUS_SRC_COLOR;
case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
return R300_BLEND_GL_ONE_MINUS_SRC_ALPHA;
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
return R300_BLEND_GL_ONE_MINUS_DST_ALPHA;
case PIPE_BLENDFACTOR_INV_DST_COLOR:
return R300_BLEND_GL_ONE_MINUS_DST_COLOR;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
return R300_BLEND_GL_ONE_MINUS_CONST_COLOR;
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
return R300_BLEND_GL_ONE_MINUS_CONST_ALPHA;
/* XXX see above
case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
case PIPE_BLENDFACTOR_INV_SRC1_ALPHA: */
default:
/* XXX the mythical 0x16 blend factor! */
break;
}
return 0;
}
/* Create a new blend state based on the CSO blend state.
*
* This encompasses alpha blending, logic/raster ops, and blend dithering. */
static void* r300_create_blend_state(struct pipe_context* pipe,
struct pipe_blend_state* state)
{
struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
if (state->blend_enable) {
/* XXX for now, always do separate alpha...
* is it faster to do it with one reg? */
blend->blend_control = R300_ALPHA_BLEND_ENABLE |
R300_SEPARATE_ALPHA_ENABLE |
R300_READ_ENABLE |
translate_blend_function(state->rgb_func) |
(translate_blend_factor(state->rgb_src_factor) <<
R300_SRC_BLEND_SHIFT) |
(translate_blend_factor(state->rgb_dst_factor) <<
R300_DST_BLEND_SHIFT);
blend->alpha_blend_control =
translate_blend_function(state->alpha_func) |
(translate_blend_factor(state->alpha_src_factor) <<
R300_SRC_BLEND_SHIFT) |
(translate_blend_factor(state->alpha_dst_factor) <<
R300_DST_BLEND_SHIFT);
}
/* PIPE_LOGICOP_* don't need to be translated, fortunately. */
/* XXX are logicops still allowed if blending's disabled?
* Does Gallium take care of it for us? */
if (state->logicop_enable) {
blend->rop = R300_RB3D_ROPCNTL_ROP_ENABLE |
(state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
}
if (state->dither) {
blend->dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
}
return (void*)blend;
}
/* Bind blend state. */
static void r300_bind_blend_state(struct pipe_context* pipe,
void* state)
{
struct r300_context* r300 = r300_context(pipe);
r300->blend_state = (struct r300_blend_state*)state;
r300->dirty_state |= R300_NEW_BLEND;
}
/* Free blend state. */
static void r300_delete_blend_state(struct pipe_context* pipe,
void* state)
{
FREE(state);
}
/* Create a new scissor state based on the CSO scissor state.
*
* This is only for the fragment scissors. */
static void* r300_create_scissor_state(struct pipe_context* pipe,
struct pipe_scissor_state* state)
{
uint32_t left, top, right, bottom;
struct r300_scissor_state* scissor = CALLOC_STRUCT(r300_scissor_state);
/* So, a bit of info. The scissors are offset by R300_SCISSORS_OFFSET in
* both directions for all values, and can only be 13 bits wide. Why?
* We may never know. */
left = (state->minx + R300_SCISSORS_OFFSET) & 0x1fff;
top = (state->miny + R300_SCISSORS_OFFSET) & 0x1fff;
right = (state->maxx + R300_SCISSORS_OFFSET) & 0x1fff;
bottom = (state->maxy + R300_SCISSORS_OFFSET) & 0x1fff;
scissor->scissor_top_left = (left << R300_SCISSORS_X_SHIFT) |
(top << R300_SCISSORS_Y_SHIFT);
scissor->scissor_bottom_right = (right << R300_SCISSORS_X_SHIFT) |
(bottom << R300_SCISSORS_Y_SHIFT);
return (void*)scissor;
}
/* Bind scissor state.*/
static void r300_bind_scissor_state(struct pipe_context* pipe,
void* state)
{
struct r300_context* r300 = r300_context(pipe);
r300->scissor_state = (struct r300_scissor_state*)state;
r300->dirty_state |= R300_NEW_SCISSOR;
}
/* Delete scissor state. */
static void r300_delete_scissor_state(struct pipe_context* pipe,
void* state)
{
FREE(state);
}
static void* r300_create_vs_state(struct pipe_context* pipe,
struct pipe_shader_state* state)
{
struct r300_context* context = r300_context(pipe);
/* XXX handing this off to Draw for now */
return draw_create_vertex_shader(context->draw, state);
}
static void r300_bind_vs_state(struct pipe_context* pipe, void* state) {
struct r300_context* context = r300_context(pipe);
/* XXX handing this off to Draw for now */
draw_bind_vertex_shader(context->draw, (struct draw_vertex_shader*)state);
}
static void r300_delete_vs_state(struct pipe_context* pipe, void* state)
{
struct r300_context* context = r300_context(pipe);
/* XXX handing this off to Draw for now */
draw_delete_vertex_shader(context->draw, (struct draw_vertex_shader*)state);
}
|
