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.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"
59 /* sw_screen_create: to get a software pipe driver */
60 #include "target-helpers/inline_sw_helper.h"
61 /* debug_screen_wrap: to wrap with debug pipe drivers */
62 #include "target-helpers/inline_debug_helper.h"
63 /* null software winsys */
64 #include "sw/null/null_sw_winsys.h"
68 struct pipe_screen
*screen
;
69 struct pipe_context
*pipe
;
70 struct cso_context
*cso
;
72 struct pipe_blend_state blend
;
73 struct pipe_depth_stencil_alpha_state depthstencil
;
74 struct pipe_rasterizer_state rasterizer
;
75 struct pipe_viewport_state viewport
;
76 struct pipe_framebuffer_state framebuffer
;
77 struct pipe_vertex_element velem
[2];
84 struct pipe_resource
*vbuf
;
85 struct pipe_resource
*target
;
88 static void init_prog(struct program
*p
)
90 /* create the software rasterizer */
91 p
->screen
= sw_screen_create(null_sw_create());
92 /* wrap the screen with any debugger */
93 p
->screen
= debug_screen_wrap(p
->screen
);
95 /* create the pipe driver context and cso context */
96 p
->pipe
= p
->screen
->context_create(p
->screen
, NULL
);
97 p
->cso
= cso_create_context(p
->pipe
);
100 p
->clear_color
[0] = 0.3;
101 p
->clear_color
[1] = 0.1;
102 p
->clear_color
[2] = 0.3;
103 p
->clear_color
[3] = 1.0;
107 float vertices
[4][2][4] = {
109 { 0.0f
, -0.9f
, 0.0f
, 1.0f
},
110 { 1.0f
, 0.0f
, 0.0f
, 1.0f
}
113 { -0.9f
, 0.9f
, 0.0f
, 1.0f
},
114 { 0.0f
, 1.0f
, 0.0f
, 1.0f
}
117 { 0.9f
, 0.9f
, 0.0f
, 1.0f
},
118 { 0.0f
, 0.0f
, 1.0f
, 1.0f
}
122 p
->vbuf
= pipe_buffer_create(p
->screen
, PIPE_BIND_VERTEX_BUFFER
, sizeof(vertices
));
123 pipe_buffer_write(p
->pipe
, p
->vbuf
, 0, sizeof(vertices
), vertices
);
126 /* render target texture */
128 struct pipe_resource tmplt
;
129 memset(&tmplt
, 0, sizeof(tmplt
));
130 tmplt
.target
= PIPE_TEXTURE_2D
;
131 tmplt
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
; /* All drivers support this */
132 tmplt
.width0
= WIDTH
;
133 tmplt
.height0
= HEIGHT
;
135 tmplt
.last_level
= 0;
136 tmplt
.bind
= PIPE_BIND_RENDER_TARGET
;
138 p
->target
= p
->screen
->resource_create(p
->screen
, &tmplt
);
141 /* disabled blending/masking */
142 memset(&p
->blend
, 0, sizeof(p
->blend
));
143 p
->blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
145 /* no-op depth/stencil/alpha */
146 memset(&p
->depthstencil
, 0, sizeof(p
->depthstencil
));
149 memset(&p
->rasterizer
, 0, sizeof(p
->rasterizer
));
150 p
->rasterizer
.cull_face
= PIPE_FACE_NONE
;
151 p
->rasterizer
.gl_rasterization_rules
= 1;
153 /* drawing destination */
154 memset(&p
->framebuffer
, 0, sizeof(p
->framebuffer
));
155 p
->framebuffer
.width
= WIDTH
;
156 p
->framebuffer
.height
= HEIGHT
;
157 p
->framebuffer
.nr_cbufs
= 1;
158 p
->framebuffer
.cbufs
[0] = p
->screen
->get_tex_surface(p
->screen
, p
->target
, 0, 0, 0, PIPE_BIND_RENDER_TARGET
);
160 /* viewport, depth isn't really needed */
165 float half_width
= (float)WIDTH
/ 2.0f
;
166 float half_height
= (float)HEIGHT
/ 2.0f
;
167 float half_depth
= ((float)FAR
- (float)NEAR
) / 2.0f
;
172 bias
= (float)HEIGHT
;
178 p
->viewport
.scale
[0] = half_width
;
179 p
->viewport
.scale
[1] = half_height
* scale
;
180 p
->viewport
.scale
[2] = half_depth
;
181 p
->viewport
.scale
[3] = 1.0f
;
183 p
->viewport
.translate
[0] = half_width
+ x
;
184 p
->viewport
.translate
[1] = (half_height
+ y
) * scale
+ bias
;
185 p
->viewport
.translate
[2] = half_depth
+ z
;
186 p
->viewport
.translate
[3] = 0.0f
;
189 /* vertex elements state */
190 memset(p
->velem
, 0, sizeof(p
->velem
));
191 p
->velem
[0].src_offset
= 0 * 4 * sizeof(float); /* offset 0, first element */
192 p
->velem
[0].instance_divisor
= 0;
193 p
->velem
[0].vertex_buffer_index
= 0;
194 p
->velem
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
196 p
->velem
[1].src_offset
= 1 * 4 * sizeof(float); /* offset 16, second element */
197 p
->velem
[1].instance_divisor
= 0;
198 p
->velem
[1].vertex_buffer_index
= 0;
199 p
->velem
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
203 const uint semantic_names
[] = { TGSI_SEMANTIC_POSITION
,
204 TGSI_SEMANTIC_COLOR
};
205 const uint semantic_indexes
[] = { 0, 0 };
206 p
->vs
= util_make_vertex_passthrough_shader(p
->pipe
, 2, semantic_names
, semantic_indexes
);
209 /* fragment shader */
210 p
->fs
= util_make_fragment_passthrough_shader(p
->pipe
);
213 static void close_prog(struct program
*p
)
215 /* unset all state */
216 cso_release_all(p
->cso
);
218 p
->pipe
->delete_vs_state(p
->pipe
, p
->vs
);
219 p
->pipe
->delete_fs_state(p
->pipe
, p
->fs
);
221 pipe_surface_reference(&p
->framebuffer
.cbufs
[0], NULL
);
222 pipe_resource_reference(&p
->target
, NULL
);
223 pipe_resource_reference(&p
->vbuf
, NULL
);
225 cso_destroy_context(p
->cso
);
226 p
->pipe
->destroy(p
->pipe
);
227 p
->screen
->destroy(p
->screen
);
232 static void draw(struct program
*p
)
234 /* set the render target */
235 cso_set_framebuffer(p
->cso
, &p
->framebuffer
);
237 /* clear the render target */
238 p
->pipe
->clear(p
->pipe
, PIPE_CLEAR_COLOR
, p
->clear_color
, 0, 0);
240 /* set misc state we care about */
241 cso_set_blend(p
->cso
, &p
->blend
);
242 cso_set_depth_stencil_alpha(p
->cso
, &p
->depthstencil
);
243 cso_set_rasterizer(p
->cso
, &p
->rasterizer
);
244 cso_set_viewport(p
->cso
, &p
->viewport
);
247 cso_set_fragment_shader_handle(p
->cso
, p
->fs
);
248 cso_set_vertex_shader_handle(p
->cso
, p
->vs
);
250 /* vertex element data */
251 cso_set_vertex_elements(p
->cso
, 2, p
->velem
);
253 util_draw_vertex_buffer(p
->pipe
,
257 2); /* attribs/vert */
259 p
->pipe
->flush(p
->pipe
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
261 debug_dump_surface_bmp(p
->pipe
, "result.bmp", p
->framebuffer
.cbufs
[0]);
264 int main(int argc
, char** argv
)
266 struct program
*p
= CALLOC_STRUCT(program
);