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Rev | Author | Line No. | Line |
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5564 | serge | 1 | /* Test the TGSI_SEMANTIC_POSITION fragment shader input. |
2 | * Plus properties for upper-left vs. lower-left origin and |
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3 | * center integer vs. half-integer; |
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4 | */ |
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5 | |||
6 | #include |
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7 | |||
8 | #include "graw_util.h" |
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9 | |||
10 | |||
11 | static int width = 300; |
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12 | static int height = 300; |
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13 | |||
14 | static struct graw_info info; |
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15 | |||
16 | struct vertex { |
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17 | float position[4]; |
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18 | float color[4]; |
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19 | }; |
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20 | |||
21 | /* Note: the upper-left vertex is pushed to the left a bit to |
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22 | * make sure we can spot upside-down rendering. |
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23 | */ |
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24 | static struct vertex vertices[] = |
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25 | { |
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26 | { |
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27 | {-0.95, -0.95, 0.5, 1.0 }, |
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28 | { 0, 0, 0, 1 } |
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29 | }, |
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30 | |||
31 | { |
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32 | { 0.85, -0.95, 0.5, 1.0 }, |
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33 | { 0, 0, 0, 1 } |
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34 | }, |
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35 | |||
36 | { |
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37 | { 0.95, 0.95, 0.5, 1.0 }, |
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38 | { 0, 0, 0, 1 } |
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39 | }, |
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40 | |||
41 | { |
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42 | {-0.95, 0.95, 0.5, 1.0 }, |
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43 | { 0, 0, 0, 1 } |
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44 | } |
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45 | }; |
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46 | |||
47 | #define NUM_VERTS (sizeof(vertices) / sizeof(vertices[0])) |
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48 | |||
49 | |||
50 | static void |
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51 | set_vertices(void) |
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52 | { |
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53 | struct pipe_vertex_element ve[2]; |
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54 | struct pipe_vertex_buffer vbuf; |
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55 | void *handle; |
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56 | |||
57 | memset(ve, 0, sizeof ve); |
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58 | |||
59 | ve[0].src_offset = Offset(struct vertex, position); |
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60 | ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; |
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61 | ve[1].src_offset = Offset(struct vertex, color); |
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62 | ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; |
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63 | |||
64 | handle = info.ctx->create_vertex_elements_state(info.ctx, 2, ve); |
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65 | info.ctx->bind_vertex_elements_state(info.ctx, handle); |
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66 | |||
67 | memset(&vbuf, 0, sizeof vbuf); |
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68 | |||
69 | vbuf.stride = sizeof(struct vertex); |
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70 | vbuf.buffer_offset = 0; |
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71 | vbuf.buffer = pipe_buffer_create_with_data(info.ctx, |
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72 | PIPE_BIND_VERTEX_BUFFER, |
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73 | PIPE_USAGE_DEFAULT, |
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74 | sizeof(vertices), |
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75 | vertices); |
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76 | |||
77 | info.ctx->set_vertex_buffers(info.ctx, 0, 1, &vbuf); |
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78 | } |
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79 | |||
80 | |||
81 | static void |
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82 | set_vertex_shader(void) |
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83 | { |
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84 | void *handle; |
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85 | const char *text = |
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86 | "VERT\n" |
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87 | "DCL IN[0]\n" |
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88 | "DCL IN[1]\n" |
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89 | "DCL OUT[0], POSITION\n" |
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90 | "DCL OUT[1], GENERIC[0]\n" |
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91 | " 0: MOV OUT[0], IN[0]\n" |
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92 | " 1: MOV OUT[1], IN[1]\n" |
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93 | " 2: END\n"; |
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94 | |||
95 | handle = graw_parse_vertex_shader(info.ctx, text); |
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96 | info.ctx->bind_vs_state(info.ctx, handle); |
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97 | } |
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98 | |||
99 | |||
100 | static void |
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101 | set_fragment_shader(int mode) |
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102 | { |
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103 | void *handle; |
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104 | |||
105 | const char *origin_upper_left_text = |
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106 | "FRAG\n" |
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107 | "PROPERTY FS_COORD_ORIGIN UPPER_LEFT\n" /* upper-left = black corner */ |
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108 | "DCL IN[0], POSITION, LINEAR\n" |
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109 | "DCL OUT[0], COLOR\n" |
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110 | "DCL TEMP[0]\n" |
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111 | "IMM FLT32 { 0.003333, 0.003333, 1.0, 1.0 }\n" |
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112 | "IMM FLT32 { 0.0, 300.0, 0.0, 0.0 }\n" |
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113 | " 0: MOV TEMP[0], IN[0] \n" |
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114 | " 1: MOV TEMP[0].zw, IMM[1].xxxx \n" |
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115 | " 2: MUL OUT[0], TEMP[0], IMM[0] \n" |
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116 | " 3: END\n"; |
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117 | |||
118 | const char *origin_lower_left_text = |
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119 | "FRAG\n" |
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120 | "PROPERTY FS_COORD_ORIGIN LOWER_LEFT\n" /* lower-left = black corner */ |
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121 | "DCL IN[0], POSITION, LINEAR\n" |
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122 | "DCL OUT[0], COLOR\n" |
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123 | "DCL TEMP[0]\n" |
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124 | "IMM FLT32 { 0.003333, 0.003333, 1.0, 1.0 }\n" |
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125 | "IMM FLT32 { 0.0, 300.0, 0.0, 0.0 }\n" |
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126 | " 0: MOV TEMP[0], IN[0] \n" |
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127 | " 1: MOV TEMP[0].zw, IMM[1].xxxx \n" |
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128 | " 2: MUL OUT[0], TEMP[0], IMM[0] \n" |
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129 | " 3: END\n"; |
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130 | |||
131 | /* Test fragcoord center integer vs. half integer */ |
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132 | const char *center_integer_text = |
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133 | "FRAG\n" |
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134 | "PROPERTY FS_COORD_PIXEL_CENTER INTEGER \n" /* pixels are black */ |
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135 | "DCL IN[0], POSITION, LINEAR \n" |
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136 | "DCL OUT[0], COLOR \n" |
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137 | "DCL TEMP[0] \n" |
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138 | "IMM FLT32 { 0.003333, 0.003333, 1.0, 1.0 } \n" |
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139 | "IMM FLT32 { 0.0, 300.0, 0.0, 0.0 } \n" |
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140 | "0: FRC TEMP[0], IN[0] \n" |
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141 | "1: MOV TEMP[0].zw, IMM[1].xxxx \n" |
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142 | "2: MOV OUT[0], TEMP[0] \n" |
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143 | "3: END \n"; |
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144 | |||
145 | const char *center_half_integer_text = |
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146 | "FRAG\n" |
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147 | "PROPERTY FS_COORD_PIXEL_CENTER HALF_INTEGER \n" /* pixels are olive colored */ |
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148 | "DCL IN[0], POSITION, LINEAR \n" |
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149 | "DCL OUT[0], COLOR \n" |
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150 | "DCL TEMP[0] \n" |
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151 | "IMM FLT32 { 0.003333, 0.003333, 1.0, 1.0 } \n" |
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152 | "IMM FLT32 { 0.0, 300.0, 0.0, 0.0 } \n" |
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153 | "0: FRC TEMP[0], IN[0] \n" |
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154 | "1: MOV TEMP[0].zw, IMM[1].xxxx \n" |
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155 | "2: MOV OUT[0], TEMP[0] \n" |
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156 | "3: END \n"; |
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157 | |||
158 | const char *text; |
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159 | |||
160 | if (mode == 0) |
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161 | text = origin_upper_left_text; |
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162 | else if (mode == 1) |
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163 | text = origin_lower_left_text; |
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164 | else if (mode == 2) |
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165 | text = center_integer_text; |
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166 | else |
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167 | text = center_half_integer_text; |
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168 | |||
169 | handle = graw_parse_fragment_shader(info.ctx, text); |
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170 | info.ctx->bind_fs_state(info.ctx, handle); |
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171 | } |
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172 | |||
173 | |||
174 | static void |
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175 | draw(void) |
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176 | { |
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177 | union pipe_color_union clear_color; |
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178 | |||
179 | clear_color.f[0] = 0.25; |
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180 | clear_color.f[1] = 0.25; |
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181 | clear_color.f[2] = 0.25; |
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182 | clear_color.f[3] = 1.0; |
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183 | |||
184 | info.ctx->clear(info.ctx, |
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185 | PIPE_CLEAR_COLOR | PIPE_CLEAR_DEPTHSTENCIL, |
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186 | &clear_color, 1.0, 0); |
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187 | util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, NUM_VERTS); |
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188 | info.ctx->flush(info.ctx, NULL, 0); |
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189 | |||
190 | #if 0 |
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191 | /* At the moment, libgraw leaks out/makes available some of the |
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192 | * symbols from gallium/auxiliary, including these debug helpers. |
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193 | * Will eventually want to bless some of these paths, and lock the |
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194 | * others down so they aren't accessible from test programs. |
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195 | * |
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196 | * This currently just happens to work on debug builds - a release |
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197 | * build will probably fail to link here: |
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198 | */ |
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199 | debug_dump_surface_bmp(info.ctx, "result.bmp", surf); |
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200 | #endif |
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201 | |||
202 | graw_util_flush_front(&info); |
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203 | } |
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204 | |||
205 | |||
206 | #if 0 |
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207 | static void |
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208 | resize(int w, int h) |
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209 | { |
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210 | width = w; |
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211 | height = h; |
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212 | |||
213 | set_viewport(0, 0, width, height, 30, 1000); |
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214 | } |
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215 | #endif |
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216 | |||
217 | |||
218 | static void |
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219 | init(int mode) |
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220 | { |
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221 | if (!graw_util_create_window(&info, width, height, 1, TRUE)) |
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222 | exit(1); |
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223 | |||
224 | graw_util_default_state(&info, TRUE); |
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225 | |||
226 | graw_util_viewport(&info, 0, 0, width, height, -1.0, 1.0); |
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227 | |||
228 | set_vertices(); |
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229 | set_vertex_shader(); |
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230 | set_fragment_shader(mode); |
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231 | } |
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232 | |||
233 | |||
234 | int |
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235 | main(int argc, char *argv[]) |
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236 | { |
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237 | int mode = argc > 1 ? atoi(argv[1]) : 0; |
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238 | |||
239 | switch (mode) { |
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240 | default: |
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241 | case 0: |
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242 | printf("frag coord origin upper-left (lower-left = black)\n"); |
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243 | break; |
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244 | case 1: |
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245 | printf("frag coord origin lower-left (upper-left = black)\n"); |
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246 | break; |
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247 | case 2: |
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248 | printf("frag coord center integer (all pixels black)\n"); |
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249 | break; |
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250 | case 3: |
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251 | printf("frag coord center half-integer (all pixels olive color)\n"); |
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252 | break; |
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253 | } |
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254 | |||
255 | init(mode); |
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256 | |||
257 | graw_set_display_func(draw); |
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258 | /*graw_set_reshape_func(resize);*/ |
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259 | graw_main_loop(); |
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260 | return 0; |
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261 | } |