2 * Test draw instancing.
8 #include "state_tracker/graw.h"
9 #include "pipe/p_screen.h"
10 #include "pipe/p_context.h"
11 #include "pipe/p_state.h"
12 #include "pipe/p_defines.h"
14 #include "util/u_debug.h" /* debug_dump_surface_bmp() */
15 #include "util/u_memory.h" /* Offset() */
16 #include "util/u_draw_quad.h"
19 enum pipe_format formats
[] = {
20 PIPE_FORMAT_R8G8B8A8_UNORM
,
21 PIPE_FORMAT_B8G8R8A8_UNORM
,
25 static const int WIDTH
= 300;
26 static const int HEIGHT
= 300;
28 static struct pipe_screen
*screen
= NULL
;
29 static struct pipe_context
*ctx
= NULL
;
30 static struct pipe_surface
*surf
= NULL
;
31 static void *window
= NULL
;
39 static int draw_elements
= 0;
44 * Each vertex has three attributes: position, color and translation.
45 * The translation attribute is a per-instance attribute. See
46 * "instance_divisor" below.
48 static struct vertex vertices
[4] =
51 { 0.0f
, -0.3f
, 0.0f
, 1.0f
}, /* pos */
52 { 1.0f
, 0.0f
, 0.0f
, 1.0f
} /* color */
55 { -0.2f
, 0.3f
, 0.0f
, 1.0f
},
56 { 0.0f
, 1.0f
, 0.0f
, 1.0f
}
59 { 0.2f
, 0.3f
, 0.0f
, 1.0f
},
60 { 0.0f
, 0.0f
, 1.0f
, 1.0f
}
67 static float inst_data
[NUM_INST
][4] =
69 { -0.50f
, 0.4f
, 0.0f
, 0.0f
},
70 { -0.25f
, 0.1f
, 0.0f
, 0.0f
},
71 { 0.00f
, 0.2f
, 0.0f
, 0.0f
},
72 { 0.25f
, 0.1f
, 0.0f
, 0.0f
},
73 { 0.50f
, 0.3f
, 0.0f
, 0.0f
}
77 static ushort indices
[3] = { 0, 2, 1 };
80 static void set_viewport( float x
, float y
,
81 float width
, float height
,
82 float near
, float far
)
85 float half_width
= (float)width
/ 2.0f
;
86 float half_height
= (float)height
/ 2.0f
;
87 float half_depth
= ((float)far
- (float)near
) / 2.0f
;
88 struct pipe_viewport_state vp
;
90 vp
.scale
[0] = half_width
;
91 vp
.scale
[1] = half_height
;
92 vp
.scale
[2] = half_depth
;
95 vp
.translate
[0] = half_width
+ x
;
96 vp
.translate
[1] = half_height
+ y
;
97 vp
.translate
[2] = half_depth
+ z
;
98 vp
.translate
[3] = 0.0f
;
100 ctx
->set_viewport_state( ctx
, &vp
);
104 static void set_vertices( void )
106 struct pipe_vertex_element ve
[3];
107 struct pipe_vertex_buffer vbuf
[2];
108 struct pipe_index_buffer ibuf
;
111 memset(ve
, 0, sizeof ve
);
114 ve
[0].src_offset
= Offset(struct vertex
, position
);
115 ve
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
116 ve
[0].vertex_buffer_index
= 0;
119 ve
[1].src_offset
= Offset(struct vertex
, color
);
120 ve
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
121 ve
[1].vertex_buffer_index
= 0;
123 /* per-instance info */
124 ve
[2].src_offset
= 0;
125 ve
[2].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
126 ve
[2].vertex_buffer_index
= 1;
127 ve
[2].instance_divisor
= 1;
129 handle
= ctx
->create_vertex_elements_state(ctx
, 3, ve
);
130 ctx
->bind_vertex_elements_state(ctx
, handle
);
134 vbuf
[0].stride
= sizeof( struct vertex
);
135 vbuf
[0].max_index
= sizeof(vertices
) / vbuf
[0].stride
;
136 vbuf
[0].buffer_offset
= 0;
137 vbuf
[0].buffer
= screen
->user_buffer_create(screen
,
140 PIPE_BIND_VERTEX_BUFFER
);
143 vbuf
[1].stride
= sizeof( inst_data
[0] );
144 vbuf
[1].max_index
= sizeof(inst_data
) / vbuf
[1].stride
;
145 vbuf
[1].buffer_offset
= 0;
146 vbuf
[1].buffer
= screen
->user_buffer_create(screen
,
149 PIPE_BIND_VERTEX_BUFFER
);
152 ctx
->set_vertex_buffers(ctx
, 2, vbuf
);
155 ibuf
.buffer
= screen
->user_buffer_create(screen
,
158 PIPE_BIND_VERTEX_BUFFER
);
162 ctx
->set_index_buffer(ctx
, &ibuf
);
166 static void set_vertex_shader( void )
174 "DCL OUT[0], POSITION\n"
175 "DCL OUT[1], COLOR\n"
176 " 0: MOV OUT[1], IN[1]\n"
177 " 1: ADD OUT[0], IN[0], IN[2]\n" /* add instance pos to vertex pos */
180 handle
= graw_parse_vertex_shader(ctx
, text
);
181 ctx
->bind_vs_state(ctx
, handle
);
184 static void set_fragment_shader( void )
189 "DCL IN[0], COLOR, LINEAR\n"
190 "DCL OUT[0], COLOR\n"
191 " 0: MOV OUT[0], IN[0]\n"
194 handle
= graw_parse_fragment_shader(ctx
, text
);
195 ctx
->bind_fs_state(ctx
, handle
);
199 static void draw( void )
201 float clear_color
[4] = {1,0,1,1};
202 struct pipe_draw_info info
;
204 ctx
->clear(ctx
, PIPE_CLEAR_COLOR
, clear_color
, 0, 0);
206 util_draw_init_info(&info
);
207 info
.indexed
= (draw_elements
!= 0);
208 info
.mode
= PIPE_PRIM_TRIANGLES
;
211 /* draw NUM_INST triangles */
212 info
.instance_count
= NUM_INST
;
214 ctx
->draw_vbo(ctx
, &info
);
216 ctx
->flush(ctx
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
219 /* At the moment, libgraw leaks out/makes available some of the
220 * symbols from gallium/auxiliary, including these debug helpers.
221 * Will eventually want to bless some of these paths, and lock the
222 * others down so they aren't accessible from test programs.
224 * This currently just happens to work on debug builds - a release
225 * build will probably fail to link here:
227 debug_dump_surface_bmp(ctx
, "result.bmp", surf
);
230 screen
->flush_frontbuffer(screen
, surf
, window
);
234 static void init( void )
236 struct pipe_framebuffer_state fb
;
237 struct pipe_resource
*tex
, templat
;
240 /* It's hard to say whether window or screen should be created
241 * first. Different environments would prefer one or the other.
243 * Also, no easy way of querying supported formats if the screen
244 * cannot be created first.
247 window
== NULL
&& formats
[i
] != PIPE_FORMAT_NONE
;
250 screen
= graw_create_window_and_screen(0,0,300,300,
255 ctx
= screen
->context_create(screen
, NULL
);
259 templat
.target
= PIPE_TEXTURE_2D
;
260 templat
.format
= formats
[i
];
261 templat
.width0
= WIDTH
;
262 templat
.height0
= HEIGHT
;
264 templat
.last_level
= 0;
265 templat
.nr_samples
= 1;
266 templat
.bind
= (PIPE_BIND_RENDER_TARGET
|
267 PIPE_BIND_DISPLAY_TARGET
);
269 tex
= screen
->resource_create(screen
,
274 surf
= screen
->get_tex_surface(screen
, tex
, 0, 0, 0,
275 PIPE_BIND_RENDER_TARGET
|
276 PIPE_BIND_DISPLAY_TARGET
);
280 memset(&fb
, 0, sizeof fb
);
286 ctx
->set_framebuffer_state(ctx
, &fb
);
289 struct pipe_blend_state blend
;
291 memset(&blend
, 0, sizeof blend
);
292 blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
293 handle
= ctx
->create_blend_state(ctx
, &blend
);
294 ctx
->bind_blend_state(ctx
, handle
);
298 struct pipe_depth_stencil_alpha_state depthstencil
;
300 memset(&depthstencil
, 0, sizeof depthstencil
);
301 handle
= ctx
->create_depth_stencil_alpha_state(ctx
, &depthstencil
);
302 ctx
->bind_depth_stencil_alpha_state(ctx
, handle
);
306 struct pipe_rasterizer_state rasterizer
;
308 memset(&rasterizer
, 0, sizeof rasterizer
);
309 rasterizer
.cull_face
= PIPE_FACE_NONE
;
310 rasterizer
.gl_rasterization_rules
= 1;
311 handle
= ctx
->create_rasterizer_state(ctx
, &rasterizer
);
312 ctx
->bind_rasterizer_state(ctx
, handle
);
315 set_viewport(0, 0, WIDTH
, HEIGHT
, 30, 1000);
318 set_fragment_shader();
322 static void options(int argc
, char *argv
[])
325 for (i
= 1; i
< argc
; i
++) {
326 if (strcmp(argv
[i
], "-e") == 0)
330 printf("Using pipe_context::draw_elements_instanced()\n");
332 printf("Using pipe_context::draw_arrays_instanced()\n");
336 int main( int argc
, char *argv
[] )
342 graw_set_display_func( draw
);