| [1] | 1 | #include <GL/oscontext.h> |
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| 2 | #include "zbuffer.h" |
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| 3 | #include "zgl.h" |
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| 4 | #include <GL/gl.h> |
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| 5 | #include <stdlib.h> |
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| 6 | #include <assert.h> |
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| 7 | |
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| 8 | static int buffercnt = 0; |
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| 9 | |
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| 10 | ostgl_context * |
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| 11 | ostgl_create_context(const int xsize, |
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| 12 | const int ysize, |
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| 13 | const int depth, |
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| 14 | void **framebuffers, |
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| 15 | const int numbuffers) |
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| 16 | { |
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| 17 | ostgl_context *context; |
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| 18 | int i; |
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| 19 | ZBuffer *zb; |
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| 20 | |
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| 21 | assert(depth == 16); /* support for other depths must include bpp |
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| 22 | convertion */ |
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| 23 | assert(numbuffers >= 1); |
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| 24 | |
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| 25 | context = gl_malloc(sizeof(ostgl_context)); |
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| 26 | assert(context); |
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| 27 | context->zbs = gl_malloc(sizeof(void*)*numbuffers); |
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| 28 | context->framebuffers = gl_malloc(sizeof(void*)*numbuffers); |
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| 29 | |
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| 30 | assert(context->zbs != NULL && context->framebuffers != NULL); |
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| 31 | |
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| 32 | for (i = 0; i < numbuffers; i++) { |
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| 33 | context->framebuffers[i] = framebuffers[i]; |
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| 34 | zb = ZB_open(xsize, ysize, ZB_MODE_5R6G5B, 0, NULL, NULL, framebuffers[i]); |
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| 35 | if (zb == NULL) { |
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| 36 | fprintf(stderr, "Error while initializing Z buffer\n"); |
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| 37 | exit(1); |
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| 38 | } |
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| 39 | context->zbs[i] = zb; |
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| 40 | } |
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| 41 | if (++buffercnt == 1) { |
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| 42 | glInit(context->zbs[0]); |
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| 43 | } |
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| 44 | context->xsize = xsize; |
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| 45 | context->ysize = ysize; |
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| 46 | context->numbuffers = numbuffers; |
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| 47 | context->depth = 16; |
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| 48 | context->bytes_per_line = xsize; |
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| 49 | return context; |
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| 50 | } |
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| 51 | |
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| 52 | void |
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| 53 | ostgl_delete_context(ostgl_context *context) |
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| 54 | { |
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| 55 | int i; |
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| 56 | for (i = 0; i < context->numbuffers; i++) { |
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| 57 | ZB_close(context->zbs[i]); |
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| 58 | } |
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| 59 | gl_free(context->zbs); |
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| 60 | gl_free(context->framebuffers); |
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| 61 | gl_free(context); |
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| 62 | |
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| 63 | if (--buffercnt == 0) { |
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| 64 | glClose(); |
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| 65 | } |
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| 66 | } |
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| 67 | |
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| 68 | void |
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| 69 | ostgl_make_current(ostgl_context *oscontext, const int idx) |
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| 70 | { |
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| 71 | GLContext *context = gl_get_context(); |
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| 72 | assert(idx < oscontext->numbuffers); |
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| 73 | context->zb = oscontext->zbs[idx]; |
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| 74 | } |
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| 75 | |
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| 76 | void |
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| 77 | ostgl_resize(ostgl_context *context, |
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| 78 | const int xsize, |
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| 79 | const int ysize, |
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| 80 | void **framebuffers) |
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| 81 | { |
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| 82 | int i; |
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| 83 | for (i = 0; i < context->numbuffers; i++) { |
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| 84 | ZB_resize(context->zbs[i], framebuffers[i], xsize, ysize); |
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| 85 | } |
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| 86 | } |
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| 87 | |
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| 88 | |
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| 89 | void |
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| 90 | ostgl_swap_buffers(ostgl_context *context) |
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| 91 | { |
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| 92 | int i; |
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| 93 | |
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| 94 | for(i = 0; i < context->numbuffers; i++) { |
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| 95 | ZB_copyFrameBuffer(context->zbs[i], context->framebuffers[i], context->bytes_per_line); |
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| 96 | } |
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| 97 | } |
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