| 1 | /* Copyright (c) 2001, Stanford University
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| 2 | * All rights reserved
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| 3 | *
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| 4 | * See the file LICENSE.txt for information on redistributing this software.
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| 5 | */
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| 6 |
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| 7 | #include <stdio.h>
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| 8 | #include "state.h"
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| 9 | #include "state/cr_statetypes.h"
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| 10 | #include "state_internals.h"
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| 11 |
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| 12 | void crStateHintInit (CRContext *ctx)
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| 13 | {
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| 14 | CRHintState *h = &ctx->hint;
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| 15 | CRStateBits *sb = GetCurrentBits();
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| 16 | CRHintBits *hb = &(sb->hint);
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| 17 |
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| 18 | h->perspectiveCorrection = GL_DONT_CARE;
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| 19 | RESET(hb->perspectiveCorrection, ctx->bitid);
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| 20 | h->pointSmooth = GL_DONT_CARE;
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| 21 | RESET(hb->pointSmooth, ctx->bitid);
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| 22 | h->lineSmooth = GL_DONT_CARE;
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| 23 | RESET(hb->lineSmooth, ctx->bitid);
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| 24 | h->polygonSmooth = GL_DONT_CARE;
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| 25 | RESET(hb->polygonSmooth, ctx->bitid);
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| 26 | h->fog = GL_DONT_CARE;
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| 27 | RESET(hb->fog, ctx->bitid);
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| 28 | #ifdef CR_EXT_clip_volume_hint
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| 29 | h->clipVolumeClipping = GL_DONT_CARE;
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| 30 | RESET(hb->clipVolumeClipping, ctx->bitid);
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| 31 | #endif
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| 32 | #ifdef CR_ARB_texture_compression
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| 33 | h->textureCompression = GL_DONT_CARE;
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| 34 | RESET(hb->textureCompression, ctx->bitid);
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| 35 | #endif
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| 36 | #ifdef CR_SGIS_generate_mipmap
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| 37 | h->generateMipmap = GL_DONT_CARE;
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| 38 | RESET(hb->generateMipmap, ctx->bitid);
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| 39 | #endif
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| 40 | RESET(hb->dirty, ctx->bitid);
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| 41 | }
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| 42 |
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| 43 | void STATE_APIENTRY crStateHint(GLenum target, GLenum mode)
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| 44 | {
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| 45 | CRContext *g = GetCurrentContext();
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| 46 | CRHintState *h = &(g->hint);
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| 47 | CRStateBits *sb = GetCurrentBits();
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| 48 | CRHintBits *hb = &(sb->hint);
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| 49 |
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| 50 | if (g->current.inBeginEnd)
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| 51 | {
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| 52 | crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
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| 53 | "glHint called in Begin/End");
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| 54 | return;
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| 55 | }
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| 56 |
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| 57 | FLUSH();
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| 58 |
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| 59 | if (mode != GL_FASTEST && mode != GL_NICEST && mode != GL_DONT_CARE) {
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| 60 | crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
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| 61 | "glHint(mode)");
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| 62 | return;
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| 63 | }
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| 64 |
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| 65 | switch (target) {
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| 66 | case GL_PERSPECTIVE_CORRECTION_HINT:
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| 67 | h->perspectiveCorrection = mode;
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| 68 | DIRTY(hb->perspectiveCorrection, g->neg_bitid);
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| 69 | break;
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| 70 | case GL_FOG_HINT:
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| 71 | h->fog = mode;
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| 72 | DIRTY(hb->fog, g->neg_bitid);
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| 73 | break;
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| 74 | case GL_LINE_SMOOTH_HINT:
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| 75 | h->lineSmooth = mode;
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| 76 | DIRTY(hb->lineSmooth, g->neg_bitid);
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| 77 | break;
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| 78 | case GL_POINT_SMOOTH_HINT:
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| 79 | h->pointSmooth = mode;
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| 80 | DIRTY(hb->pointSmooth, g->neg_bitid);
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| 81 | break;
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| 82 | case GL_POLYGON_SMOOTH_HINT:
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| 83 | h->polygonSmooth = mode;
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| 84 | DIRTY(hb->polygonSmooth, g->neg_bitid);
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| 85 | break;
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| 86 | #ifdef CR_EXT_clip_volume_hint
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| 87 | case GL_CLIP_VOLUME_CLIPPING_HINT_EXT:
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| 88 | if (g->extensions.EXT_clip_volume_hint) {
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| 89 | h->clipVolumeClipping = mode;
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| 90 | DIRTY(hb->clipVolumeClipping, g->neg_bitid);
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| 91 | }
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| 92 | else {
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| 93 | crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
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| 94 | "glHint(target)");
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| 95 | return;
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| 96 | }
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| 97 | break;
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| 98 | #endif
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| 99 | #ifdef CR_ARB_texture_compression
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| 100 | case GL_TEXTURE_COMPRESSION_HINT_ARB:
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| 101 | if (g->extensions.ARB_texture_compression) {
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| 102 | h->textureCompression = mode;
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| 103 | DIRTY(hb->textureCompression, g->neg_bitid);
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| 104 | }
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| 105 | else {
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| 106 | crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
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| 107 | "glHint(target)");
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| 108 | return;
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| 109 | }
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| 110 | break;
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| 111 | #endif
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| 112 | #ifdef CR_SGIS_generate_mipmap
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| 113 | case GL_GENERATE_MIPMAP_HINT_SGIS:
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| 114 | if (g->extensions.SGIS_generate_mipmap) {
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| 115 | h->generateMipmap = mode;
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| 116 | DIRTY(hb->generateMipmap, g->neg_bitid);
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| 117 | }
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| 118 | else {
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| 119 | crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
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| 120 | "glHint(target)");
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| 121 | return;
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| 122 | }
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| 123 | break;
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| 124 | #endif
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| 125 | default:
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| 126 | crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
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| 127 | "glHint(target)");
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| 128 | return;
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| 129 | }
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| 130 |
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| 131 | DIRTY(hb->dirty, g->neg_bitid);
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| 132 | }
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