1 /**************************************************************************
3 * Copyright © 2010 Jakob Bornecrantz
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
24 **************************************************************************/
34 /* pipe_*_state structs */
35 #include "pipe/p_state.h"
37 #include "pipe/p_context.h"
39 #include "pipe/p_screen.h"
41 #include "pipe/p_defines.h"
42 /* TGSI_SEMANTIC_{POSITION|GENERIC} */
43 #include "pipe/p_shader_tokens.h"
44 /* pipe_buffer_* helpers */
45 #include "util/u_inlines.h"
47 /* constant state object helper */
48 #include "cso_cache/cso_context.h"
50 /* debug_dump_surface_bmp */
51 #include "util/u_debug_image.h"
52 /* util_draw_vertex_buffer helper */
53 #include "util/u_draw_quad.h"
54 /* FREE & CALLOC_STRUCT */
55 #include "util/u_memory.h"
56 /* util_make_[fragment|vertex]_passthrough_shader */
57 #include "util/u_simple_shaders.h"
58 /* to get a hardware pipe driver */
59 #include "pipe-loader/pipe_loader.h"
63 struct pipe_loader_device
*dev
;
64 struct pipe_screen
*screen
;
65 struct pipe_context
*pipe
;
66 struct cso_context
*cso
;
68 struct pipe_blend_state blend
;
69 struct pipe_depth_stencil_alpha_state depthstencil
;
70 struct pipe_rasterizer_state rasterizer
;
71 struct pipe_viewport_state viewport
;
72 struct pipe_framebuffer_state framebuffer
;
73 struct pipe_vertex_element velem
[2];
78 union pipe_color_union clear_color
;
80 struct pipe_resource
*vbuf
;
81 struct pipe_resource
*target
;
84 static void init_prog(struct program
*p
)
86 struct pipe_surface surf_tmpl
;
89 /* find a hardware device */
90 ret
= pipe_loader_probe(&p
->dev
, 1);
93 /* init a pipe screen */
94 p
->screen
= pipe_loader_create_screen(p
->dev
);
97 /* create the pipe driver context and cso context */
98 p
->pipe
= p
->screen
->context_create(p
->screen
, NULL
, 0);
99 p
->cso
= cso_create_context(p
->pipe
, 0);
101 /* set clear color */
102 p
->clear_color
.f
[0] = 0.3;
103 p
->clear_color
.f
[1] = 0.1;
104 p
->clear_color
.f
[2] = 0.3;
105 p
->clear_color
.f
[3] = 1.0;
109 float vertices
[4][2][4] = {
111 { 0.0f
, -0.9f
, 0.0f
, 1.0f
},
112 { 1.0f
, 0.0f
, 0.0f
, 1.0f
}
115 { -0.9f
, 0.9f
, 0.0f
, 1.0f
},
116 { 0.0f
, 1.0f
, 0.0f
, 1.0f
}
119 { 0.9f
, 0.9f
, 0.0f
, 1.0f
},
120 { 0.0f
, 0.0f
, 1.0f
, 1.0f
}
124 p
->vbuf
= pipe_buffer_create(p
->screen
, PIPE_BIND_VERTEX_BUFFER
,
125 PIPE_USAGE_DEFAULT
, sizeof(vertices
));
126 pipe_buffer_write(p
->pipe
, p
->vbuf
, 0, sizeof(vertices
), vertices
);
129 /* render target texture */
131 struct pipe_resource tmplt
;
132 memset(&tmplt
, 0, sizeof(tmplt
));
133 tmplt
.target
= PIPE_TEXTURE_2D
;
134 tmplt
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
; /* All drivers support this */
135 tmplt
.width0
= WIDTH
;
136 tmplt
.height0
= HEIGHT
;
138 tmplt
.array_size
= 1;
139 tmplt
.last_level
= 0;
140 tmplt
.bind
= PIPE_BIND_RENDER_TARGET
;
142 p
->target
= p
->screen
->resource_create(p
->screen
, &tmplt
);
145 /* disabled blending/masking */
146 memset(&p
->blend
, 0, sizeof(p
->blend
));
147 p
->blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
149 /* no-op depth/stencil/alpha */
150 memset(&p
->depthstencil
, 0, sizeof(p
->depthstencil
));
153 memset(&p
->rasterizer
, 0, sizeof(p
->rasterizer
));
154 p
->rasterizer
.cull_face
= PIPE_FACE_NONE
;
155 p
->rasterizer
.half_pixel_center
= 1;
156 p
->rasterizer
.bottom_edge_rule
= 1;
157 p
->rasterizer
.depth_clip_near
= 1;
158 p
->rasterizer
.depth_clip_far
= 1;
160 surf_tmpl
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
;
161 surf_tmpl
.u
.tex
.level
= 0;
162 surf_tmpl
.u
.tex
.first_layer
= 0;
163 surf_tmpl
.u
.tex
.last_layer
= 0;
164 /* drawing destination */
165 memset(&p
->framebuffer
, 0, sizeof(p
->framebuffer
));
166 p
->framebuffer
.width
= WIDTH
;
167 p
->framebuffer
.height
= HEIGHT
;
168 p
->framebuffer
.nr_cbufs
= 1;
169 p
->framebuffer
.cbufs
[0] = p
->pipe
->create_surface(p
->pipe
, p
->target
, &surf_tmpl
);
171 /* viewport, depth isn't really needed */
176 float half_width
= (float)WIDTH
/ 2.0f
;
177 float half_height
= (float)HEIGHT
/ 2.0f
;
178 float half_depth
= ((float)FAR
- (float)NEAR
) / 2.0f
;
183 bias
= (float)HEIGHT
;
189 p
->viewport
.scale
[0] = half_width
;
190 p
->viewport
.scale
[1] = half_height
* scale
;
191 p
->viewport
.scale
[2] = half_depth
;
193 p
->viewport
.translate
[0] = half_width
+ x
;
194 p
->viewport
.translate
[1] = (half_height
+ y
) * scale
+ bias
;
195 p
->viewport
.translate
[2] = half_depth
+ z
;
198 /* vertex elements state */
199 memset(p
->velem
, 0, sizeof(p
->velem
));
200 p
->velem
[0].src_offset
= 0 * 4 * sizeof(float); /* offset 0, first element */
201 p
->velem
[0].instance_divisor
= 0;
202 p
->velem
[0].vertex_buffer_index
= 0;
203 p
->velem
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
205 p
->velem
[1].src_offset
= 1 * 4 * sizeof(float); /* offset 16, second element */
206 p
->velem
[1].instance_divisor
= 0;
207 p
->velem
[1].vertex_buffer_index
= 0;
208 p
->velem
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
212 const enum tgsi_semantic semantic_names
[] =
213 { TGSI_SEMANTIC_POSITION
, TGSI_SEMANTIC_COLOR
};
214 const uint semantic_indexes
[] = { 0, 0 };
215 p
->vs
= util_make_vertex_passthrough_shader(p
->pipe
, 2, semantic_names
, semantic_indexes
, FALSE
);
218 /* fragment shader */
219 p
->fs
= util_make_fragment_passthrough_shader(p
->pipe
,
220 TGSI_SEMANTIC_COLOR
, TGSI_INTERPOLATE_PERSPECTIVE
, TRUE
);
223 static void close_prog(struct program
*p
)
225 cso_destroy_context(p
->cso
);
227 p
->pipe
->delete_vs_state(p
->pipe
, p
->vs
);
228 p
->pipe
->delete_fs_state(p
->pipe
, p
->fs
);
230 pipe_surface_reference(&p
->framebuffer
.cbufs
[0], NULL
);
231 pipe_resource_reference(&p
->target
, NULL
);
232 pipe_resource_reference(&p
->vbuf
, NULL
);
234 p
->pipe
->destroy(p
->pipe
);
235 p
->screen
->destroy(p
->screen
);
236 pipe_loader_release(&p
->dev
, 1);
241 static void draw(struct program
*p
)
243 /* set the render target */
244 cso_set_framebuffer(p
->cso
, &p
->framebuffer
);
246 /* clear the render target */
247 p
->pipe
->clear(p
->pipe
, PIPE_CLEAR_COLOR
, &p
->clear_color
, 0, 0);
249 /* set misc state we care about */
250 cso_set_blend(p
->cso
, &p
->blend
);
251 cso_set_depth_stencil_alpha(p
->cso
, &p
->depthstencil
);
252 cso_set_rasterizer(p
->cso
, &p
->rasterizer
);
253 cso_set_viewport(p
->cso
, &p
->viewport
);
256 cso_set_fragment_shader_handle(p
->cso
, p
->fs
);
257 cso_set_vertex_shader_handle(p
->cso
, p
->vs
);
259 /* vertex element data */
260 cso_set_vertex_elements(p
->cso
, 2, p
->velem
);
262 util_draw_vertex_buffer(p
->pipe
, p
->cso
,
266 2); /* attribs/vert */
268 p
->pipe
->flush(p
->pipe
, NULL
, 0);
270 debug_dump_surface_bmp(p
->pipe
, "result.bmp", p
->framebuffer
.cbufs
[0]);
273 int main(int argc
, char** argv
)
275 struct program
*p
= CALLOC_STRUCT(program
);