| 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 "state.h"
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| 8 | #include "cr_error.h"
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| 9 | #include "cr_mem.h"
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| 10 | #include "cr_pixeldata.h"
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| 11 |
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| 12 | void crStateDiffContext( CRContext *from, CRContext *to )
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| 13 | {
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| 14 | CRbitvalue *bitID = from->bitid;
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| 15 | CRStateBits *sb = GetCurrentBits();
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| 16 |
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| 17 | /*crDebug( "Diffing two contexts!" ); */
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| 18 |
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| 19 | if (CHECKDIRTY(sb->transform.dirty, bitID))
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| 20 | {
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| 21 | crStateTransformDiff( &(sb->transform), bitID, from, to );
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| 22 | }
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| 23 | if (CHECKDIRTY(sb->pixel.dirty, bitID))
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| 24 | {
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| 25 | crStatePixelDiff( &(sb->pixel), bitID, from, to );
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| 26 | }
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| 27 | if (CHECKDIRTY(sb->viewport.dirty, bitID))
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| 28 | {
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| 29 | crStateViewportDiff( &(sb->viewport), bitID, from, to );
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| 30 | }
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| 31 | if (CHECKDIRTY(sb->fog.dirty, bitID))
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| 32 | {
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| 33 | crStateFogDiff( &(sb->fog), bitID, from, to );
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| 34 | }
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| 35 | if (CHECKDIRTY(sb->texture.dirty, bitID))
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| 36 | {
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| 37 | crStateTextureDiff( &(sb->texture), bitID, from, to );
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| 38 | }
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| 39 | if (CHECKDIRTY(sb->lists.dirty, bitID))
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| 40 | {
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| 41 | crStateListsDiff( &(sb->lists), bitID, from, to );
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| 42 | }
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| 43 | if (CHECKDIRTY(sb->buffer.dirty, bitID))
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| 44 | {
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| 45 | crStateBufferDiff( &(sb->buffer), bitID, from, to );
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| 46 | }
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| 47 | #ifdef CR_ARB_vertex_buffer_object
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| 48 | if (CHECKDIRTY(sb->bufferobject.dirty, bitID))
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| 49 | {
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| 50 | crStateBufferObjectDiff( &(sb->bufferobject), bitID, from, to );
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| 51 | }
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| 52 | #endif
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| 53 | if (CHECKDIRTY(sb->client.dirty, bitID))
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| 54 | {
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| 55 | crStateClientDiff(&(sb->client), bitID, from, to );
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| 56 | }
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| 57 | if (CHECKDIRTY(sb->hint.dirty, bitID))
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| 58 | {
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| 59 | crStateHintDiff( &(sb->hint), bitID, from, to );
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| 60 | }
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| 61 | if (CHECKDIRTY(sb->lighting.dirty, bitID))
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| 62 | {
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| 63 | crStateLightingDiff( &(sb->lighting), bitID, from, to );
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| 64 | }
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| 65 | if (CHECKDIRTY(sb->line.dirty, bitID))
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| 66 | {
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| 67 | crStateLineDiff( &(sb->line), bitID, from, to );
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| 68 | }
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| 69 | if (CHECKDIRTY(sb->occlusion.dirty, bitID))
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| 70 | {
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| 71 | crStateOcclusionDiff( &(sb->occlusion), bitID, from, to );
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| 72 | }
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| 73 | if (CHECKDIRTY(sb->point.dirty, bitID))
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| 74 | {
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| 75 | crStatePointDiff( &(sb->point), bitID, from, to );
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| 76 | }
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| 77 | if (CHECKDIRTY(sb->polygon.dirty, bitID))
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| 78 | {
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| 79 | crStatePolygonDiff( &(sb->polygon), bitID, from, to );
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| 80 | }
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| 81 | if (CHECKDIRTY(sb->program.dirty, bitID))
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| 82 | {
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| 83 | crStateProgramDiff( &(sb->program), bitID, from, to );
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| 84 | }
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| 85 | if (CHECKDIRTY(sb->stencil.dirty, bitID))
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| 86 | {
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| 87 | crStateStencilDiff( &(sb->stencil), bitID, from, to );
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| 88 | }
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| 89 | if (CHECKDIRTY(sb->eval.dirty, bitID))
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| 90 | {
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| 91 | crStateEvaluatorDiff( &(sb->eval), bitID, from, to );
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| 92 | }
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| 93 | #ifdef CR_ARB_imaging
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| 94 | if (CHECKDIRTY(sb->imaging.dirty, bitID))
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| 95 | {
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| 96 | crStateImagingDiff( &(sb->imaging), bitID, from, to );
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| 97 | }
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| 98 | #endif
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| 99 | #if 0
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| 100 | if (CHECKDIRTY(sb->selection.dirty, bitID))
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| 101 | {
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| 102 | crStateSelectionDiff( &(sb->selection), bitID, from, to );
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| 103 | }
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| 104 | #endif
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| 105 | #ifdef CR_NV_register_combiners
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| 106 | if (CHECKDIRTY(sb->regcombiner.dirty, bitID) && to->extensions.NV_register_combiners)
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| 107 | {
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| 108 | crStateRegCombinerDiff( &(sb->regcombiner), bitID, from, to );
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| 109 | }
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| 110 | #endif
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| 111 | #ifdef CR_ARB_multisample
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| 112 | if (CHECKDIRTY(sb->multisample.dirty, bitID) &&
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| 113 | from->extensions.ARB_multisample)
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| 114 | {
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| 115 | crStateMultisampleDiff( &(sb->multisample), bitID, from, to );
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| 116 | }
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| 117 | #endif
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| 118 | if (CHECKDIRTY(sb->current.dirty, bitID))
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| 119 | {
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| 120 | crStateCurrentDiff( &(sb->current), bitID, from, to );
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| 121 | }
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| 122 | }
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| 123 |
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| 124 | void crStateApplyFBImage(CRContext *to)
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| 125 | {
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| 126 | if (to->buffer.pFrontImg || to->buffer.pBackImg)
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| 127 | {
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| 128 | CRBufferState *pBuf = &to->buffer;
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| 129 | CRPixelPackState unpack = to->client.unpack;
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| 130 |
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| 131 | diff_api.PixelStorei(GL_UNPACK_SKIP_ROWS, 0);
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| 132 | diff_api.PixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
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| 133 | diff_api.PixelStorei(GL_UNPACK_ALIGNMENT, 1);
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| 134 | diff_api.PixelStorei(GL_UNPACK_ROW_LENGTH, 0);
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| 135 | diff_api.PixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0);
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| 136 | diff_api.PixelStorei(GL_UNPACK_SKIP_IMAGES, 0);
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| 137 | diff_api.PixelStorei(GL_UNPACK_SWAP_BYTES, 0);
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| 138 | diff_api.PixelStorei(GL_UNPACK_LSB_FIRST, 0);
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| 139 |
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| 140 | if (to->framebufferobject.drawFB)
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| 141 | {
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| 142 | diff_api.BindFramebufferEXT(GL_DRAW_FRAMEBUFFER, 0);
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| 143 | }
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| 144 |
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| 145 | if (to->bufferobject.unpackBuffer->hwid>0)
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| 146 | {
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| 147 | diff_api.BindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
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| 148 | }
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| 149 |
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| 150 | diff_api.Disable(GL_ALPHA_TEST);
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| 151 | diff_api.Disable(GL_SCISSOR_TEST);
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| 152 | diff_api.Disable(GL_BLEND);
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| 153 | diff_api.Disable(GL_COLOR_LOGIC_OP);
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| 154 |
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| 155 | if (pBuf->pFrontImg)
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| 156 | {
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| 157 | diff_api.DrawBuffer(GL_FRONT);
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| 158 | diff_api.WindowPos2iARB(0, 0);
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| 159 | diff_api.DrawPixels(pBuf->storedWidth, pBuf->storedHeight, GL_RGBA, GL_UNSIGNED_BYTE, pBuf->pFrontImg);
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| 160 | crDebug("Applied %ix%i fb image", pBuf->storedWidth, pBuf->storedHeight);
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| 161 | crFree(pBuf->pFrontImg);
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| 162 | pBuf->pFrontImg = NULL;
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| 163 | }
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| 164 |
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| 165 | if (pBuf->pBackImg)
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| 166 | {
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| 167 | diff_api.DrawBuffer(GL_BACK);
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| 168 | diff_api.WindowPos2iARB(0, 0);
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| 169 | diff_api.DrawPixels(pBuf->storedWidth, pBuf->storedHeight, GL_RGBA, GL_UNSIGNED_BYTE, pBuf->pBackImg);
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| 170 | crDebug("Applied %ix%i bb image", pBuf->storedWidth, pBuf->storedHeight);
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| 171 | crFree(pBuf->pBackImg);
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| 172 | pBuf->pBackImg = NULL;
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| 173 | }
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| 174 |
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| 175 | diff_api.WindowPos3fvARB(to->current.rasterAttrib[VERT_ATTRIB_POS]);
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| 176 | if (to->bufferobject.unpackBuffer->hwid>0)
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| 177 | {
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| 178 | diff_api.BindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, to->bufferobject.unpackBuffer->hwid);
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| 179 | }
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| 180 | if (to->framebufferobject.drawFB)
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| 181 | {
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| 182 | diff_api.BindFramebufferEXT(GL_DRAW_FRAMEBUFFER, to->framebufferobject.drawFB->hwid);
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| 183 | }
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| 184 | diff_api.DrawBuffer(to->framebufferobject.drawFB ?
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| 185 | to->framebufferobject.drawFB->drawbuffer[0] : to->buffer.drawBuffer);
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| 186 | if (to->buffer.alphaTest)
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| 187 | {
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| 188 | diff_api.Enable(GL_ALPHA_TEST);
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| 189 | }
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| 190 | if (to->viewport.scissorTest)
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| 191 | {
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| 192 | diff_api.Enable(GL_SCISSOR_TEST);
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| 193 | }
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| 194 | if (to->buffer.blend)
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| 195 | {
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| 196 | diff_api.Enable(GL_BLEND);
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| 197 | }
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| 198 | if (to->buffer.logicOp)
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| 199 | {
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| 200 | diff_api.Enable(GL_COLOR_LOGIC_OP);
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| 201 | }
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| 202 |
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| 203 | diff_api.PixelStorei(GL_UNPACK_SKIP_ROWS, unpack.skipRows);
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| 204 | diff_api.PixelStorei(GL_UNPACK_SKIP_PIXELS, unpack.skipPixels);
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| 205 | diff_api.PixelStorei(GL_UNPACK_ALIGNMENT, unpack.alignment);
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| 206 | diff_api.PixelStorei(GL_UNPACK_ROW_LENGTH, unpack.rowLength);
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| 207 | diff_api.PixelStorei(GL_UNPACK_IMAGE_HEIGHT, unpack.imageHeight);
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| 208 | diff_api.PixelStorei(GL_UNPACK_SKIP_IMAGES, unpack.skipImages);
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| 209 | diff_api.PixelStorei(GL_UNPACK_SWAP_BYTES, unpack.swapBytes);
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| 210 | diff_api.PixelStorei(GL_UNPACK_LSB_FIRST, unpack.psLSBFirst);
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| 211 |
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| 212 | diff_api.Finish();
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| 213 | }
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| 214 | }
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| 215 |
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| 216 | void crStateSwitchContext( CRContext *from, CRContext *to )
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| 217 | {
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| 218 | CRbitvalue *bitID = to->bitid;
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| 219 | CRStateBits *sb = GetCurrentBits();
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| 220 |
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| 221 | if (CHECKDIRTY(sb->attrib.dirty, bitID))
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| 222 | {
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| 223 | crStateAttribSwitch(&(sb->attrib), bitID, from, to );
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| 224 | }
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| 225 | if (CHECKDIRTY(sb->transform.dirty, bitID))
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| 226 | {
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| 227 | crStateTransformSwitch( &(sb->transform), bitID, from, to );
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| 228 | }
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| 229 | if (CHECKDIRTY(sb->pixel.dirty, bitID))
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| 230 | {
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| 231 | crStatePixelSwitch(&(sb->pixel), bitID, from, to );
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| 232 | }
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| 233 | if (CHECKDIRTY(sb->viewport.dirty, bitID))
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| 234 | {
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| 235 | crStateViewportSwitch(&(sb->viewport), bitID, from, to );
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| 236 | }
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| 237 | if (CHECKDIRTY(sb->fog.dirty, bitID))
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| 238 | {
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| 239 | crStateFogSwitch(&(sb->fog), bitID, from, to );
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| 240 | }
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| 241 | if (CHECKDIRTY(sb->texture.dirty, bitID))
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| 242 | {
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| 243 | crStateTextureSwitch( &(sb->texture), bitID, from, to );
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| 244 | }
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| 245 | if (CHECKDIRTY(sb->lists.dirty, bitID))
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| 246 | {
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| 247 | crStateListsSwitch(&(sb->lists), bitID, from, to );
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| 248 | }
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| 249 | if (CHECKDIRTY(sb->buffer.dirty, bitID))
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| 250 | {
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| 251 | crStateBufferSwitch( &(sb->buffer), bitID, from, to );
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| 252 | }
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| 253 | #ifdef CR_ARB_vertex_buffer_object
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| 254 | if (CHECKDIRTY(sb->bufferobject.dirty, bitID))
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| 255 | {
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| 256 | crStateBufferObjectSwitch( &(sb->bufferobject), bitID, from, to );
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| 257 | }
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| 258 | #endif
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| 259 | if (CHECKDIRTY(sb->client.dirty, bitID))
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| 260 | {
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| 261 | crStateClientSwitch( &(sb->client), bitID, from, to );
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| 262 | }
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| 263 | #if 0
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| 264 | if (CHECKDIRTY(sb->hint.dirty, bitID))
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| 265 | {
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| 266 | crStateHintSwitch( &(sb->hint), bitID, from, to );
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| 267 | }
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| 268 | #endif
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| 269 | if (CHECKDIRTY(sb->lighting.dirty, bitID))
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| 270 | {
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| 271 | crStateLightingSwitch( &(sb->lighting), bitID, from, to );
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| 272 | }
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| 273 | if (CHECKDIRTY(sb->occlusion.dirty, bitID))
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| 274 | {
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| 275 | crStateOcclusionSwitch( &(sb->occlusion), bitID, from, to );
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| 276 | }
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| 277 | if (CHECKDIRTY(sb->line.dirty, bitID))
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| 278 | {
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| 279 | crStateLineSwitch( &(sb->line), bitID, from, to );
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| 280 | }
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| 281 | if (CHECKDIRTY(sb->point.dirty, bitID))
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| 282 | {
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| 283 | crStatePointSwitch( &(sb->point), bitID, from, to );
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| 284 | }
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| 285 | if (CHECKDIRTY(sb->polygon.dirty, bitID))
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| 286 | {
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| 287 | crStatePolygonSwitch( &(sb->polygon), bitID, from, to );
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| 288 | }
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| 289 | if (CHECKDIRTY(sb->program.dirty, bitID))
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| 290 | {
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| 291 | crStateProgramSwitch( &(sb->program), bitID, from, to );
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| 292 | }
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| 293 | if (CHECKDIRTY(sb->stencil.dirty, bitID))
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| 294 | {
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| 295 | crStateStencilSwitch( &(sb->stencil), bitID, from, to );
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| 296 | }
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| 297 | if (CHECKDIRTY(sb->eval.dirty, bitID))
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| 298 | {
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| 299 | crStateEvaluatorSwitch( &(sb->eval), bitID, from, to );
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| 300 | }
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| 301 | #ifdef CR_ARB_imaging
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| 302 | if (CHECKDIRTY(sb->imaging.dirty, bitID))
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| 303 | {
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| 304 | crStateImagingSwitch( &(sb->imaging), bitID, from, to );
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| 305 | }
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| 306 | #endif
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| 307 | #if 0
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| 308 | if (CHECKDIRTY(sb->selection.dirty, bitID))
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| 309 | {
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| 310 | crStateSelectionSwitch( &(sb->selection), bitID, from, to );
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| 311 | }
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| 312 | #endif
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| 313 | #ifdef CR_NV_register_combiners
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| 314 | if (CHECKDIRTY(sb->regcombiner.dirty, bitID) && to->extensions.NV_register_combiners)
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| 315 | {
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| 316 | crStateRegCombinerSwitch( &(sb->regcombiner), bitID, from, to );
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| 317 | }
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| 318 | #endif
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| 319 | #ifdef CR_ARB_multisample
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| 320 | if (CHECKDIRTY(sb->multisample.dirty, bitID))
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| 321 | {
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| 322 | crStateMultisampleSwitch( &(sb->multisample), bitID, from, to );
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| 323 | }
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| 324 | #endif
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| 325 | #ifdef CR_ARB_multisample
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| 326 | if (CHECKDIRTY(sb->multisample.dirty, bitID))
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| 327 | {
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| 328 | crStateMultisampleSwitch(&(sb->multisample), bitID, from, to );
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| 329 | }
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| 330 | #endif
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| 331 | #ifdef CR_EXT_framebuffer_object
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| 332 | /*Note, this should go after crStateTextureSwitch*/
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| 333 | crStateFramebufferObjectSwitch(from, to);
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| 334 | #endif
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| 335 | #ifdef CR_OPENGL_VERSION_2_0
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| 336 | crStateGLSLSwitch(from, to);
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| 337 | #endif
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| 338 | if (CHECKDIRTY(sb->current.dirty, bitID))
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| 339 | {
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| 340 | crStateCurrentSwitch( &(sb->current), bitID, from, to );
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| 341 | }
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| 342 |
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| 343 | #ifdef WINDOWS
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| 344 | crStateApplyFBImage(to);
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| 345 | #endif
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| 346 | }
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