comparison: src/shader.c
src/shader.c
- changeset 78
- 9bc544f4ce8f
- parent 77
- 2187a732f4d7
equal
deleted
inserted
replaced
| 77:2187a732f4d7 | 78:9bc544f4ce8f |
|---|---|
| 28 #include "ascension/shader.h" | 28 #include "ascension/shader.h" |
| 29 #include "ascension/error.h" | 29 #include "ascension/error.h" |
| 30 | 30 |
| 31 #include <GL/glew.h> | 31 #include <GL/glew.h> |
| 32 #include <string.h> | 32 #include <string.h> |
| 33 #include <cx/buffer.h> | |
| 34 #include <cx/streams.h> | |
| 33 | 35 |
| 34 /** | 36 /** |
| 35 * Compiles a shader from the given source code. | 37 * Compiles a shader from the given source code. |
| 36 * | 38 * |
| 37 * The ID of the returned shader will be zero when something went wrong. | 39 * The ID of the returned shader will be zero when something went wrong. |
| 129 for (unsigned i = 0; i < n; i++) { | 131 for (unsigned i = 0; i < n; i++) { |
| 130 glDeleteShader(shader[i]); | 132 glDeleteShader(shader[i]); |
| 131 } | 133 } |
| 132 return prog; | 134 return prog; |
| 133 } | 135 } |
| 136 | |
| 137 static int asc_shader_load_code_file(const char *filename, char **code) { | |
| 138 if (filename == NULL) { | |
| 139 *code = NULL; | |
| 140 return 0; | |
| 141 } | |
| 142 FILE *f = fopen(filename, "r"); | |
| 143 if (f == NULL) return -1; | |
| 144 CxBuffer buffer; | |
| 145 cxBufferInit(&buffer, NULL, 1024, NULL, 0); | |
| 146 cx_stream_copy(f, &buffer, (cx_read_func) fread, cxBufferWriteFunc); | |
| 147 cxBufferPut(&buffer, '\0'); | |
| 148 *code = realloc(buffer.space, buffer.size); | |
| 149 return *code == NULL ? -1 : 0; | |
| 150 } | |
| 151 | |
| 152 int asc_shader_load_code_files(AscShaderCodeFiles files, AscShaderCodes *codes) { | |
| 153 int ret = 0; | |
| 154 ret |= asc_shader_load_code_file(files.vtx, &codes->vtx); | |
| 155 ret |= asc_shader_load_code_file(files.frag, &codes->frag); | |
| 156 return ret; | |
| 157 } | |
| 158 | |
| 159 void asc_shader_free_codes(AscShaderCodes codes) { | |
| 160 free(codes.vtx); | |
| 161 free(codes.frag); | |
| 162 } |
