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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4358 | Serge | 1 | /* Test texture swizzles */ |
| 2 | |||
| 3 | #include |
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| 4 | |||
| 5 | #include "graw_util.h" |
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| 6 | |||
| 7 | |||
| 8 | static struct graw_info info; |
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| 9 | |||
| 10 | static struct pipe_resource *texture = NULL; |
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| 11 | static struct pipe_sampler_view *sv = NULL; |
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| 12 | static void *sampler = NULL; |
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| 13 | |||
| 14 | static const int WIDTH = 300; |
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| 15 | static const int HEIGHT = 300; |
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| 16 | |||
| 17 | struct vertex { |
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| 18 | float position[4]; |
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| 19 | float color[4]; |
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| 20 | }; |
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| 21 | |||
| 22 | static struct vertex vertices[] = |
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| 23 | { |
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| 24 | { { 0.9, -0.9, 0.0, 1.0 }, |
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| 25 | { 1, 0, 0, 1 } }, |
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| 26 | |||
| 27 | { { 0.9, 0.9, 0.0, 1.0 }, |
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| 28 | { 1, 1, 0, 1 } }, |
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| 29 | |||
| 30 | { {-0.9, 0.9, 0.0, 1.0 }, |
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| 31 | { 0, 1, 0, 1 } }, |
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| 32 | |||
| 33 | { {-0.9, -0.9, 0.0, 1.0 }, |
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| 34 | { 0, 0, 0, 1 } }, |
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| 35 | }; |
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| 36 | |||
| 37 | |||
| 38 | static void set_vertices(void) |
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| 39 | { |
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| 40 | struct pipe_vertex_element ve[2]; |
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| 41 | struct pipe_vertex_buffer vbuf; |
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| 42 | void *handle; |
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| 43 | |||
| 44 | memset(ve, 0, sizeof ve); |
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| 45 | |||
| 46 | ve[0].src_offset = Offset(struct vertex, position); |
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| 47 | ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; |
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| 48 | ve[1].src_offset = Offset(struct vertex, color); |
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| 49 | ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; |
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| 50 | |||
| 51 | handle = info.ctx->create_vertex_elements_state(info.ctx, 2, ve); |
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| 52 | info.ctx->bind_vertex_elements_state(info.ctx, handle); |
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| 53 | |||
| 54 | memset(&vbuf, 0, sizeof vbuf); |
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| 55 | |||
| 56 | vbuf.stride = sizeof(struct vertex); |
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| 57 | vbuf.buffer_offset = 0; |
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| 58 | vbuf.buffer = pipe_buffer_create_with_data(info.ctx, |
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| 59 | PIPE_BIND_VERTEX_BUFFER, |
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| 60 | PIPE_USAGE_STATIC, |
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| 61 | sizeof(vertices), |
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| 62 | vertices); |
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| 63 | |||
| 64 | info.ctx->set_vertex_buffers(info.ctx, 0, 1, &vbuf); |
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| 65 | } |
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| 66 | |||
| 67 | static void set_vertex_shader(void) |
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| 68 | { |
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| 69 | void *handle; |
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| 70 | const char *text = |
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| 71 | "VERT\n" |
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| 72 | "DCL IN[0]\n" |
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| 73 | "DCL IN[1]\n" |
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| 74 | "DCL OUT[0], POSITION\n" |
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| 75 | "DCL OUT[1], GENERIC[0]\n" |
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| 76 | " 0: MOV OUT[1], IN[1]\n" |
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| 77 | " 1: MOV OUT[0], IN[0]\n" |
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| 78 | " 2: END\n"; |
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| 79 | |||
| 80 | handle = graw_parse_vertex_shader(info.ctx, text); |
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| 81 | info.ctx->bind_vs_state(info.ctx, handle); |
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| 82 | } |
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| 83 | |||
| 84 | static void set_fragment_shader(void) |
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| 85 | { |
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| 86 | void *handle; |
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| 87 | const char *text = |
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| 88 | "FRAG\n" |
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| 89 | "DCL IN[0], GENERIC[0], PERSPECTIVE\n" |
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| 90 | "DCL OUT[0], COLOR\n" |
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| 91 | "DCL SAMP[0]\n" |
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| 92 | " 0: TXP OUT[0], IN[0], SAMP[0], 2D\n" |
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| 93 | " 2: END\n"; |
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| 94 | |||
| 95 | handle = graw_parse_fragment_shader(info.ctx, text); |
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| 96 | info.ctx->bind_fs_state(info.ctx, handle); |
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| 97 | } |
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| 98 | |||
| 99 | |||
| 100 | static void draw(void) |
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| 101 | { |
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| 102 | union pipe_color_union clear_color; |
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| 103 | |||
| 104 | clear_color.f[0] = 0.5; |
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| 105 | clear_color.f[1] = 0.5; |
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| 106 | clear_color.f[2] = 0.5; |
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| 107 | clear_color.f[3] = 1.0; |
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| 108 | |||
| 109 | info.ctx->clear(info.ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0); |
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| 110 | util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, 4); |
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| 111 | info.ctx->flush(info.ctx, NULL, 0); |
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| 112 | |||
| 113 | graw_util_flush_front(&info); |
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| 114 | } |
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| 115 | |||
| 116 | |||
| 117 | |||
| 118 | static void |
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| 119 | init_tex(const unsigned swizzle[4]) |
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| 120 | { |
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| 121 | #define SIZE 256 |
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| 122 | struct pipe_sampler_view sv_template; |
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| 123 | ubyte tex2d[SIZE][SIZE][4]; |
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| 124 | int s, t; |
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| 125 | |||
| 126 | for (s = 0; s < SIZE; s++) { |
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| 127 | for (t = 0; t < SIZE; t++) { |
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| 128 | tex2d[t][s][0] = 0; /*B*/ |
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| 129 | tex2d[t][s][1] = t; /*G*/ |
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| 130 | tex2d[t][s][2] = s; /*R*/ |
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| 131 | tex2d[t][s][3] = 1; /*A*/ |
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| 132 | } |
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| 133 | } |
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| 134 | |||
| 135 | texture = graw_util_create_tex2d(&info, SIZE, SIZE, |
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| 136 | PIPE_FORMAT_B8G8R8A8_UNORM, tex2d); |
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| 137 | |||
| 138 | memset(&sv_template, 0, sizeof sv_template); |
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| 139 | sv_template.format = texture->format; |
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| 140 | sv_template.texture = texture; |
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| 141 | sv_template.swizzle_r = swizzle[0]; |
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| 142 | sv_template.swizzle_g = swizzle[1]; |
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| 143 | sv_template.swizzle_b = swizzle[2]; |
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| 144 | sv_template.swizzle_a = swizzle[3]; |
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| 145 | sv = info.ctx->create_sampler_view(info.ctx, texture, &sv_template); |
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| 146 | if (sv == NULL) |
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| 147 | exit(5); |
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| 148 | |||
| 149 | info.ctx->set_fragment_sampler_views(info.ctx, 1, &sv); |
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| 150 | |||
| 151 | sampler = graw_util_create_simple_sampler(&info, |
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| 152 | PIPE_TEX_WRAP_REPEAT, |
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| 153 | PIPE_TEX_FILTER_NEAREST); |
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| 154 | |||
| 155 | info.ctx->bind_fragment_sampler_states(info.ctx, 1, &sampler); |
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| 156 | #undef SIZE |
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| 157 | } |
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| 158 | |||
| 159 | |||
| 160 | static void |
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| 161 | init(const unsigned swizzle[4]) |
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| 162 | { |
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| 163 | if (!graw_util_create_window(&info, WIDTH, HEIGHT, 1, FALSE)) |
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| 164 | exit(1); |
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| 165 | |||
| 166 | graw_util_default_state(&info, FALSE); |
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| 167 | |||
| 168 | graw_util_viewport(&info, 0, 0, WIDTH, HEIGHT, 30, 10000); |
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| 169 | |||
| 170 | init_tex(swizzle); |
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| 171 | |||
| 172 | set_vertices(); |
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| 173 | set_vertex_shader(); |
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| 174 | set_fragment_shader(); |
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| 175 | } |
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| 176 | |||
| 177 | |||
| 178 | static unsigned |
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| 179 | char_to_swizzle(char c) |
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| 180 | { |
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| 181 | switch (c) { |
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| 182 | case 'r': |
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| 183 | return PIPE_SWIZZLE_RED; |
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| 184 | case 'g': |
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| 185 | return PIPE_SWIZZLE_GREEN; |
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| 186 | case 'b': |
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| 187 | return PIPE_SWIZZLE_BLUE; |
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| 188 | case 'a': |
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| 189 | return PIPE_SWIZZLE_ALPHA; |
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| 190 | case '0': |
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| 191 | return PIPE_SWIZZLE_ZERO; |
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| 192 | case '1': |
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| 193 | return PIPE_SWIZZLE_ONE; |
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| 194 | default: |
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| 195 | return PIPE_SWIZZLE_RED; |
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| 196 | } |
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| 197 | } |
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| 198 | |||
| 199 | |||
| 200 | int main(int argc, char *argv[]) |
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| 201 | { |
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| 202 | const char swizzle_names[] = "rgba01"; |
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| 203 | uint swizzle[4]; |
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| 204 | int i; |
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| 205 | |||
| 206 | swizzle[0] = PIPE_SWIZZLE_RED; |
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| 207 | swizzle[1] = PIPE_SWIZZLE_GREEN; |
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| 208 | swizzle[2] = PIPE_SWIZZLE_BLUE; |
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| 209 | swizzle[3] = PIPE_SWIZZLE_ALPHA; |
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| 210 | |||
| 211 | for (i = 1; i < argc; i++) { |
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| 212 | swizzle[i-1] = char_to_swizzle(argv[i][0]); |
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| 213 | } |
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| 214 | |||
| 215 | printf("Example:\n"); |
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| 216 | printf(" tex-swizzle r 0 g 1\n"); |
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| 217 | printf("Current swizzle = "); |
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| 218 | for (i = 0; i < 4; i++) { |
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| 219 | printf("%c", swizzle_names[swizzle[i]]); |
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| 220 | } |
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| 221 | printf("\n"); |
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| 222 | |||
| 223 | init(swizzle); |
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| 224 | |||
| 225 | graw_set_display_func(draw); |
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| 226 | graw_main_loop(); |
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| 227 | return 0; |
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| 228 | } |