1 /* Test texture swizzles */
8 static struct graw_info info
;
10 static struct pipe_resource
*texture
= NULL
;
11 static struct pipe_sampler_view
*sv
= NULL
;
12 static void *sampler
= NULL
;
14 static const int WIDTH
= 300;
15 static const int HEIGHT
= 300;
22 static struct vertex vertices
[] =
24 { { 0.9, -0.9, 0.0, 1.0 },
27 { { 0.9, 0.9, 0.0, 1.0 },
30 { {-0.9, 0.9, 0.0, 1.0 },
33 { {-0.9, -0.9, 0.0, 1.0 },
38 static void set_vertices(void)
40 struct pipe_vertex_element ve
[2];
41 struct pipe_vertex_buffer vbuf
;
44 memset(ve
, 0, sizeof ve
);
46 ve
[0].src_offset
= Offset(struct vertex
, position
);
47 ve
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
48 ve
[1].src_offset
= Offset(struct vertex
, color
);
49 ve
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
51 handle
= info
.ctx
->create_vertex_elements_state(info
.ctx
, 2, ve
);
52 info
.ctx
->bind_vertex_elements_state(info
.ctx
, handle
);
54 memset(&vbuf
, 0, sizeof vbuf
);
56 vbuf
.stride
= sizeof(struct vertex
);
57 vbuf
.buffer_offset
= 0;
58 vbuf
.buffer
= pipe_buffer_create_with_data(info
.ctx
,
59 PIPE_BIND_VERTEX_BUFFER
,
64 info
.ctx
->set_vertex_buffers(info
.ctx
, 0, 1, &vbuf
);
67 static void set_vertex_shader(void)
74 "DCL OUT[0], POSITION\n"
75 "DCL OUT[1], GENERIC[0]\n"
76 " 0: MOV OUT[1], IN[1]\n"
77 " 1: MOV OUT[0], IN[0]\n"
80 handle
= graw_parse_vertex_shader(info
.ctx
, text
);
81 info
.ctx
->bind_vs_state(info
.ctx
, handle
);
84 static void set_fragment_shader(void)
89 "DCL IN[0], GENERIC[0], PERSPECTIVE\n"
92 " 0: TXP OUT[0], IN[0], SAMP[0], 2D\n"
95 handle
= graw_parse_fragment_shader(info
.ctx
, text
);
96 info
.ctx
->bind_fs_state(info
.ctx
, handle
);
100 static void draw(void)
102 union pipe_color_union clear_color
;
104 clear_color
.f
[0] = 0.5;
105 clear_color
.f
[1] = 0.5;
106 clear_color
.f
[2] = 0.5;
107 clear_color
.f
[3] = 1.0;
109 info
.ctx
->clear(info
.ctx
, PIPE_CLEAR_COLOR
, &clear_color
, 0, 0);
110 util_draw_arrays(info
.ctx
, PIPE_PRIM_QUADS
, 0, 4);
111 info
.ctx
->flush(info
.ctx
, NULL
, 0);
113 graw_util_flush_front(&info
);
119 init_tex(const unsigned swizzle
[4])
122 struct pipe_sampler_view sv_template
;
123 ubyte tex2d
[SIZE
][SIZE
][4];
126 for (s
= 0; s
< SIZE
; s
++) {
127 for (t
= 0; t
< SIZE
; t
++) {
128 tex2d
[t
][s
][0] = 0; /*B*/
129 tex2d
[t
][s
][1] = t
; /*G*/
130 tex2d
[t
][s
][2] = s
; /*R*/
131 tex2d
[t
][s
][3] = 1; /*A*/
135 texture
= graw_util_create_tex2d(&info
, SIZE
, SIZE
,
136 PIPE_FORMAT_B8G8R8A8_UNORM
, tex2d
);
138 memset(&sv_template
, 0, sizeof sv_template
);
139 sv_template
.format
= texture
->format
;
140 sv_template
.texture
= texture
;
141 sv_template
.swizzle_r
= swizzle
[0];
142 sv_template
.swizzle_g
= swizzle
[1];
143 sv_template
.swizzle_b
= swizzle
[2];
144 sv_template
.swizzle_a
= swizzle
[3];
145 sv
= info
.ctx
->create_sampler_view(info
.ctx
, texture
, &sv_template
);
149 info
.ctx
->set_sampler_views(info
.ctx
, PIPE_SHADER_FRAGMENT
, 0, 1, &sv
);
151 sampler
= graw_util_create_simple_sampler(&info
,
152 PIPE_TEX_WRAP_REPEAT
,
153 PIPE_TEX_FILTER_NEAREST
);
155 info
.ctx
->bind_sampler_states(info
.ctx
, PIPE_SHADER_FRAGMENT
,
162 init(const unsigned swizzle
[4])
164 if (!graw_util_create_window(&info
, WIDTH
, HEIGHT
, 1, FALSE
))
167 graw_util_default_state(&info
, FALSE
);
169 graw_util_viewport(&info
, 0, 0, WIDTH
, HEIGHT
, 30, 10000);
175 set_fragment_shader();
180 char_to_swizzle(char c
)
184 return PIPE_SWIZZLE_RED
;
186 return PIPE_SWIZZLE_GREEN
;
188 return PIPE_SWIZZLE_BLUE
;
190 return PIPE_SWIZZLE_ALPHA
;
192 return PIPE_SWIZZLE_ZERO
;
194 return PIPE_SWIZZLE_ONE
;
196 return PIPE_SWIZZLE_RED
;
201 int main(int argc
, char *argv
[])
203 const char swizzle_names
[] = "rgba01";
207 swizzle
[0] = PIPE_SWIZZLE_RED
;
208 swizzle
[1] = PIPE_SWIZZLE_GREEN
;
209 swizzle
[2] = PIPE_SWIZZLE_BLUE
;
210 swizzle
[3] = PIPE_SWIZZLE_ALPHA
;
212 for (i
= 1; i
< argc
; i
++) {
213 swizzle
[i
-1] = char_to_swizzle(argv
[i
][0]);
216 printf("Example:\n");
217 printf(" tex-swizzle r 0 g 1\n");
218 printf("Current swizzle = ");
219 for (i
= 0; i
< 4; i
++) {
220 printf("%c", swizzle_names
[swizzle
[i
]]);
226 graw_set_display_func(draw
);