1 /* Test the TGSI_SEMANTIC_FACE fragment shader input.
9 static int width
= 300;
10 static int height
= 300;
12 static struct graw_info info
;
23 static struct vertex vertices
[] =
25 /* left quad: clock-wise, front-facing, red */
27 {-0.8, -0.9, z0
, 1.0 },
32 { -0.2, -0.9, z0
, 1.0 },
37 { 0.2, 0.9, z01
, 1.0 },
42 {-0.9, 0.9, z01
, 1.0 },
46 /* right quad : counter-clock-wise, back-facing, green */
48 { 0.2, -0.9, z1
, 1.0 },
53 { -0.2, 0.8, z1
, 1.0 },
58 { 0.9, 0.8, z1
, 1.0 },
63 { 0.8, -0.9, z1
, 1.0 },
68 #define NUM_VERTS (sizeof(vertices) / sizeof(vertices[0]))
75 struct pipe_vertex_element ve
[2];
76 struct pipe_vertex_buffer vbuf
;
79 memset(ve
, 0, sizeof ve
);
81 ve
[0].src_offset
= Offset(struct vertex
, position
);
82 ve
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
83 ve
[1].src_offset
= Offset(struct vertex
, color
);
84 ve
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
86 handle
= info
.ctx
->create_vertex_elements_state(info
.ctx
, 2, ve
);
87 info
.ctx
->bind_vertex_elements_state(info
.ctx
, handle
);
89 memset(&vbuf
, 0, sizeof vbuf
);
91 vbuf
.stride
= sizeof(struct vertex
);
92 vbuf
.buffer_offset
= 0;
93 vbuf
.buffer
= pipe_buffer_create_with_data(info
.ctx
,
94 PIPE_BIND_VERTEX_BUFFER
,
99 info
.ctx
->set_vertex_buffers(info
.ctx
, 0, 1, &vbuf
);
104 set_vertex_shader(void)
111 "DCL OUT[0], POSITION\n"
112 "DCL OUT[1], GENERIC[0]\n"
113 " 0: MOV OUT[0], IN[0]\n"
114 " 1: MOV OUT[1], IN[1]\n"
117 handle
= graw_parse_vertex_shader(info
.ctx
, text
);
118 info
.ctx
->bind_vs_state(info
.ctx
, handle
);
123 set_fragment_shader(void)
128 "DCL IN[0], FACE, CONSTANT\n"
129 "DCL IN[1], GENERIC, CONSTANT\n"
130 "DCL OUT[0], COLOR\n"
132 "IMM FLT32 { 1.0, 0.0, 0.0, 0.0 }\n"
133 "IMM FLT32 { 0.0, 1.0, 0.0, 0.0 }\n"
134 "IMM FLT32 { 0.5, 0.6, 0.0, 0.0 }\n"
135 " 0: SGT TEMP[0].x, IN[0].xxxx, IMM[1].xxxx\n" /* TMP[0].x = IN[0].x > 0.0 */
136 " 1: IF TEMP[0].xxxx :4\n"
137 " 2: MOV OUT[0], IMM[0]\n" /* front-facing: red */
139 " 4: MOV OUT[0], IMM[1]\n" /* back-facing: green */
143 handle
= graw_parse_fragment_shader(info
.ctx
, text
);
144 info
.ctx
->bind_fs_state(info
.ctx
, handle
);
151 union pipe_color_union clear_color
;
153 clear_color
.f
[0] = 0.25;
154 clear_color
.f
[1] = 0.25;
155 clear_color
.f
[2] = 0.25;
156 clear_color
.f
[3] = 1.00;
158 info
.ctx
->clear(info
.ctx
,
159 PIPE_CLEAR_COLOR
| PIPE_CLEAR_DEPTHSTENCIL
,
160 &clear_color
, 1.0, 0);
161 util_draw_arrays(info
.ctx
, PIPE_PRIM_QUADS
, 0, NUM_VERTS
);
162 info
.ctx
->flush(info
.ctx
, NULL
, 0);
164 graw_util_flush_front(&info
);
175 set_viewport(0, 0, width
, height
, 30, 1000);
183 if (!graw_util_create_window(&info
, width
, height
, 1, TRUE
))
186 graw_util_default_state(&info
, TRUE
);
188 graw_util_viewport(&info
, 0, 0, width
, height
, -1.0, 1.0);
192 set_fragment_shader();
197 main(int argc
, char *argv
[])
201 printf("Left quad: clock-wise, front-facing, red\n");
202 printf("Right quad: counter clock-wise, back-facing, green\n");
204 graw_set_display_func(draw
);
205 /*graw_set_reshape_func(resize);*/