diff options
Diffstat (limited to 'xorg-server/hw/xquartz/GL/capabilities.c')
| -rw-r--r-- | xorg-server/hw/xquartz/GL/capabilities.c | 1086 |
1 files changed, 543 insertions, 543 deletions
diff --git a/xorg-server/hw/xquartz/GL/capabilities.c b/xorg-server/hw/xquartz/GL/capabilities.c index da52cc7c4..dd3f855f4 100644 --- a/xorg-server/hw/xquartz/GL/capabilities.c +++ b/xorg-server/hw/xquartz/GL/capabilities.c @@ -1,543 +1,543 @@ -/*
- * Copyright (c) 2008 Apple Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <OpenGL/OpenGL.h>
-#include <OpenGL/gl.h>
-#include <OpenGL/glu.h>
-#include <OpenGL/glext.h>
-#include <ApplicationServices/ApplicationServices.h>
-
-#include "capabilities.h"
-
-#define Cursor X_Cursor
-#include "os.h"
-#undef Cursor
-
-static void handleBufferModes(struct glCapabilitiesConfig *c, GLint bufferModes) {
- if(bufferModes & kCGLStereoscopicBit) {
- c->stereo = true;
- }
-
- if(bufferModes & kCGLDoubleBufferBit) {
- c->buffers = 2;
- } else {
- c->buffers = 1;
- }
-}
-
-static void handleStencilModes(struct glCapabilitiesConfig *c, GLint smodes) {
- int offset = 0;
-
- if(kCGL0Bit & smodes)
- c->stencil_bit_depths[offset++] = 0;
-
- if(kCGL1Bit & smodes)
- c->stencil_bit_depths[offset++] = 1;
-
- if(kCGL2Bit & smodes)
- c->stencil_bit_depths[offset++] = 2;
-
- if(kCGL3Bit & smodes)
- c->stencil_bit_depths[offset++] = 3;
-
- if(kCGL4Bit & smodes)
- c->stencil_bit_depths[offset++] = 4;
-
- if(kCGL5Bit & smodes)
- c->stencil_bit_depths[offset++] = 5;
-
- if(kCGL6Bit & smodes)
- c->stencil_bit_depths[offset++] = 6;
-
- if(kCGL8Bit & smodes)
- c->stencil_bit_depths[offset++] = 8;
-
- if(kCGL10Bit & smodes)
- c->stencil_bit_depths[offset++] = 10;
-
- if(kCGL12Bit & smodes)
- c->stencil_bit_depths[offset++] = 12;
-
- if(kCGL16Bit & smodes)
- c->stencil_bit_depths[offset++] = 16;
-
- if(kCGL24Bit & smodes)
- c->stencil_bit_depths[offset++] = 24;
-
- if(kCGL32Bit & smodes)
- c->stencil_bit_depths[offset++] = 32;
-
- if(kCGL48Bit & smodes)
- c->stencil_bit_depths[offset++] = 48;
-
- if(kCGL64Bit & smodes)
- c->stencil_bit_depths[offset++] = 64;
-
- if(kCGL96Bit & smodes)
- c->stencil_bit_depths[offset++] = 96;
-
- if(kCGL128Bit & smodes)
- c->stencil_bit_depths[offset++] = 128;
-
- assert(offset < GLCAPS_STENCIL_BIT_DEPTH_BUFFERS);
-
- c->total_stencil_bit_depths = offset;
-}
-
-static int handleColorAndAccumulation(struct glColorBufCapabilities *c,
- GLint cmodes, int forAccum) {
- int offset = 0;
-
- /*1*/
- if(kCGLRGB444Bit & cmodes) {
- c[offset].r = 4;
- c[offset].g = 4;
- c[offset].b = 4;
- ++offset;
- }
-
- /*2*/
- if(kCGLARGB4444Bit & cmodes) {
- c[offset].a = 4;
- c[offset].r = 4;
- c[offset].g = 4;
- c[offset].b = 4;
- c[offset].is_argb = true;
- ++offset;
- }
-
- /*3*/
- if(kCGLRGB444A8Bit & cmodes) {
- c[offset].r = 4;
- c[offset].g = 4;
- c[offset].b = 4;
- c[offset].a = 8;
- ++offset;
- }
-
- /*4*/
- if(kCGLRGB555Bit & cmodes) {
- c[offset].r = 5;
- c[offset].g = 5;
- c[offset].b = 5;
- ++offset;
- }
-
- /*5*/
- if(kCGLARGB1555Bit & cmodes) {
- c[offset].a = 1;
- c[offset].r = 5;
- c[offset].g = 5;
- c[offset].b = 5;
- c[offset].is_argb = true;
- ++offset;
- }
-
- /*6*/
- if(kCGLRGB555A8Bit & cmodes) {
- c[offset].r = 5;
- c[offset].g = 5;
- c[offset].b = 5;
- c[offset].a = 8;
- ++offset;
- }
-
- /*7*/
- if(kCGLRGB565Bit & cmodes) {
- c[offset].r = 5;
- c[offset].g = 6;
- c[offset].b = 5;
- ++offset;
- }
-
- /*8*/
- if(kCGLRGB565A8Bit & cmodes) {
- c[offset].r = 5;
- c[offset].g = 6;
- c[offset].b = 5;
- c[offset].a = 8;
- ++offset;
- }
-
- /*9*/
- if(kCGLRGB888Bit & cmodes) {
- c[offset].r = 8;
- c[offset].g = 8;
- c[offset].b = 8;
- ++offset;
- }
-
- /*10*/
- if(kCGLARGB8888Bit & cmodes) {
- c[offset].a = 8;
- c[offset].r = 8;
- c[offset].g = 8;
- c[offset].b = 8;
- c[offset].is_argb = true;
- ++offset;
- }
-
- /*11*/
- if(kCGLRGB888A8Bit & cmodes) {
- c[offset].r = 8;
- c[offset].g = 8;
- c[offset].b = 8;
- c[offset].a = 8;
- ++offset;
- }
-
- if(forAccum) {
-//#if 0
- /* FIXME
- * Disable this path, because some part of libGL, X, or Xplugin
- * doesn't work with sizes greater than 8.
- * When this is enabled and visuals are chosen using depths
- * such as 16, the result is that the windows don't redraw
- * and are often white, until a resize.
- */
-
- /*12*/
- if(kCGLRGB101010Bit & cmodes) {
- c[offset].r = 10;
- c[offset].g = 10;
- c[offset].b = 10;
- ++offset;
- }
-
- /*13*/
- if(kCGLARGB2101010Bit & cmodes) {
- c[offset].a = 2;
- c[offset].r = 10;
- c[offset].g = 10;
- c[offset].b = 10;
- c[offset].is_argb = true;
- ++offset;
- }
-
- /*14*/
- if(kCGLRGB101010_A8Bit & cmodes) {
- c[offset].r = 10;
- c[offset].g = 10;
- c[offset].b = 10;
- c[offset].a = 8;
- ++offset;
- }
-
- /*15*/
- if(kCGLRGB121212Bit & cmodes) {
- c[offset].r = 12;
- c[offset].g = 12;
- c[offset].b = 12;
- ++offset;
- }
-
- /*16*/
- if(kCGLARGB12121212Bit & cmodes) {
- c[offset].a = 12;
- c[offset].r = 12;
- c[offset].g = 12;
- c[offset].b = 12;
- c[offset].is_argb = true;
- ++offset;
- }
-
- /*17*/
- if(kCGLRGB161616Bit & cmodes) {
- c[offset].r = 16;
- c[offset].g = 16;
- c[offset].b = 16;
- ++offset;
- }
-
- /*18*/
- if(kCGLRGBA16161616Bit & cmodes) {
- c[offset].r = 16;
- c[offset].g = 16;
- c[offset].b = 16;
- c[offset].a = 16;
- ++offset;
- }
- }
-//#endif
-
- /* FIXME should we handle the floating point color modes, and if so, how? */
-
- return offset;
-}
-
-
-static void handleColorModes(struct glCapabilitiesConfig *c, GLint cmodes) {
- c->total_color_buffers = handleColorAndAccumulation(c->color_buffers,
- cmodes, 0);
-
- assert(c->total_color_buffers < GLCAPS_COLOR_BUFFERS);
-}
-
-static void handleAccumulationModes(struct glCapabilitiesConfig *c, GLint cmodes) {
- c->total_accum_buffers = handleColorAndAccumulation(c->accum_buffers,
- cmodes, 1);
- assert(c->total_accum_buffers < GLCAPS_COLOR_BUFFERS);
-}
-
-static void handleDepthModes(struct glCapabilitiesConfig *c, GLint dmodes) {
- int offset = 0;
-#define DEPTH(flag,value) do { \
- if(dmodes & flag) { \
- c->depth_buffers[offset++] = value; \
- } \
- } while(0)
-
- /*1*/
- DEPTH(kCGL0Bit, 0);
- /*2*/
- DEPTH(kCGL1Bit, 1);
- /*3*/
- DEPTH(kCGL2Bit, 2);
- /*4*/
- DEPTH(kCGL3Bit, 3);
- /*5*/
- DEPTH(kCGL4Bit, 4);
- /*6*/
- DEPTH(kCGL5Bit, 5);
- /*7*/
- DEPTH(kCGL6Bit, 6);
- /*8*/
- DEPTH(kCGL8Bit, 8);
- /*9*/
- DEPTH(kCGL10Bit, 10);
- /*10*/
- DEPTH(kCGL12Bit, 12);
- /*11*/
- DEPTH(kCGL16Bit, 16);
- /*12*/
- DEPTH(kCGL24Bit, 24);
- /*13*/
- DEPTH(kCGL32Bit, 32);
- /*14*/
- DEPTH(kCGL48Bit, 48);
- /*15*/
- DEPTH(kCGL64Bit, 64);
- /*16*/
- DEPTH(kCGL96Bit, 96);
- /*17*/
- DEPTH(kCGL128Bit, 128);
-
-#undef DEPTH
-
- c->total_depth_buffer_depths = offset;
- assert(c->total_depth_buffer_depths < GLCAPS_DEPTH_BUFFERS);
-}
-
-/* Return non-zero if an error occured. */
-static CGLError handleRendererDescriptions(CGLRendererInfoObj info, GLint r,
- struct glCapabilitiesConfig *c) {
- CGLError err;
- GLint accelerated = 0, flags = 0, aux = 0, samplebufs = 0, samples = 0;
-
- err = CGLDescribeRenderer (info, r, kCGLRPAccelerated, &accelerated);
-
- if(err)
- return err;
-
- c->accelerated = accelerated;
-
- /* Buffering modes: single/double, stereo */
- err = CGLDescribeRenderer(info, r, kCGLRPBufferModes, &flags);
-
- if(err)
- return err;
-
- handleBufferModes(c, flags);
-
- /* AUX buffers */
- err = CGLDescribeRenderer(info, r, kCGLRPMaxAuxBuffers, &aux);
-
- if(err)
- return err;
-
- c->aux_buffers = aux;
-
-
- /* Depth buffer size */
- err = CGLDescribeRenderer(info, r, kCGLRPDepthModes, &flags);
-
- if(err)
- return err;
-
- handleDepthModes(c, flags);
-
-
- /* Multisample buffers */
- err = CGLDescribeRenderer(info, r, kCGLRPMaxSampleBuffers, &samplebufs);
-
- if(err)
- return err;
-
- c->multisample_buffers = samplebufs;
-
-
- /* Multisample samples per multisample buffer */
- err = CGLDescribeRenderer(info, r, kCGLRPMaxSamples, &samples);
-
- if(err)
- return err;
-
- c->multisample_samples = samples;
-
-
- /* Stencil bit depths */
- err = CGLDescribeRenderer(info, r, kCGLRPStencilModes, &flags);
-
- if(err)
- return err;
-
- handleStencilModes(c, flags);
-
-
- /* Color modes (RGB/RGBA depths supported */
- err = CGLDescribeRenderer(info, r, kCGLRPColorModes, &flags);
-
- if(err)
- return err;
-
- handleColorModes(c, flags);
-
- err = CGLDescribeRenderer(info, r, kCGLRPAccumModes, &flags);
-
- if(err)
- return err;
-
- handleAccumulationModes(c, flags);
-
- return kCGLNoError;
-}
-
-static void initCapabilities(struct glCapabilities *cap) {
- cap->configurations = NULL;
- cap->total_configurations = 0;
-}
-
-static void initConfig(struct glCapabilitiesConfig *c) {
- int i;
-
- c->accelerated = false;
- c->stereo = false;
- c->aux_buffers = 0;
- c->buffers = 0;
-
- c->total_depth_buffer_depths = 0;
-
- for(i = 0; i < GLCAPS_DEPTH_BUFFERS; ++i) {
- c->depth_buffers[i] = GLCAPS_INVALID_DEPTH_VALUE;
- }
-
- c->multisample_buffers = 0;
- c->multisample_samples = 0;
-
- c->total_stencil_bit_depths = 0;
-
- for(i = 0; i < GLCAPS_STENCIL_BIT_DEPTH_BUFFERS; ++i) {
- c->stencil_bit_depths[i] = GLCAPS_INVALID_STENCIL_DEPTH;
- }
-
- c->total_color_buffers = 0;
-
- for(i = 0; i < GLCAPS_COLOR_BUFFERS; ++i) {
- c->color_buffers[i].r = c->color_buffers[i].g =
- c->color_buffers[i].b = c->color_buffers[i].a =
- GLCAPS_COLOR_BUF_INVALID_VALUE;
- c->color_buffers[i].is_argb = false;
- }
-
- c->total_accum_buffers = 0;
-
- for(i = 0; i < GLCAPS_COLOR_BUFFERS; ++i) {
- c->accum_buffers[i].r = c->accum_buffers[i].g =
- c->accum_buffers[i].b = c->accum_buffers[i].a =
- GLCAPS_COLOR_BUF_INVALID_VALUE;
- c->accum_buffers[i].is_argb = false;
- }
-
- c->next = NULL;
-}
-
-void freeGlCapabilities(struct glCapabilities *cap) {
- struct glCapabilitiesConfig *conf, *next;
-
- conf = cap->configurations;
-
- while(conf) {
- next = conf->next;
- free(conf);
- conf = next;
- }
-
- cap->configurations = NULL;
-}
-
-/*Return true if an error occured. */
-bool getGlCapabilities(struct glCapabilities *cap) {
- CGLRendererInfoObj info;
- CGLError err;
- GLint numRenderers = 0, r;
-
- initCapabilities(cap);
-
- err = CGLQueryRendererInfo((GLuint)-1, &info, &numRenderers);
- if(err) {
- ErrorF("CGLQueryRendererInfo error: %s\n", CGLErrorString(err));
- return err;
- }
-
- for(r = 0; r < numRenderers; r++) {
- struct glCapabilitiesConfig tmpconf, *conf;
-
- initConfig(&tmpconf);
-
- err = handleRendererDescriptions(info, r, &tmpconf);
- if(err) {
- ErrorF("handleRendererDescriptions returned error: %s\n", CGLErrorString(err));
- ErrorF("trying to continue...\n");
- continue;
- }
-
- conf = malloc(sizeof(*conf));
- if(NULL == conf) {
- FatalError("Unable to allocate memory for OpenGL capabilities\n");
- }
-
- /* Copy the struct. */
- *conf = tmpconf;
-
- /* Now link the configuration into the list. */
- conf->next = cap->configurations;
- cap->configurations = conf;
- }
-
- CGLDestroyRendererInfo(info);
-
- /* No error occured. We are done. */
- return kCGLNoError;
-}
+/* + * Copyright (c) 2008 Apple Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <OpenGL/OpenGL.h> +#include <OpenGL/gl.h> +#include <OpenGL/glu.h> +#include <OpenGL/glext.h> +#include <ApplicationServices/ApplicationServices.h> + +#include "capabilities.h" + +#define Cursor X_Cursor +#include "os.h" +#undef Cursor + +static void handleBufferModes(struct glCapabilitiesConfig *c, GLint bufferModes) { + if(bufferModes & kCGLStereoscopicBit) { + c->stereo = true; + } + + if(bufferModes & kCGLDoubleBufferBit) { + c->buffers = 2; + } else { + c->buffers = 1; + } +} + +static void handleStencilModes(struct glCapabilitiesConfig *c, GLint smodes) { + int offset = 0; + + if(kCGL0Bit & smodes) + c->stencil_bit_depths[offset++] = 0; + + if(kCGL1Bit & smodes) + c->stencil_bit_depths[offset++] = 1; + + if(kCGL2Bit & smodes) + c->stencil_bit_depths[offset++] = 2; + + if(kCGL3Bit & smodes) + c->stencil_bit_depths[offset++] = 3; + + if(kCGL4Bit & smodes) + c->stencil_bit_depths[offset++] = 4; + + if(kCGL5Bit & smodes) + c->stencil_bit_depths[offset++] = 5; + + if(kCGL6Bit & smodes) + c->stencil_bit_depths[offset++] = 6; + + if(kCGL8Bit & smodes) + c->stencil_bit_depths[offset++] = 8; + + if(kCGL10Bit & smodes) + c->stencil_bit_depths[offset++] = 10; + + if(kCGL12Bit & smodes) + c->stencil_bit_depths[offset++] = 12; + + if(kCGL16Bit & smodes) + c->stencil_bit_depths[offset++] = 16; + + if(kCGL24Bit & smodes) + c->stencil_bit_depths[offset++] = 24; + + if(kCGL32Bit & smodes) + c->stencil_bit_depths[offset++] = 32; + + if(kCGL48Bit & smodes) + c->stencil_bit_depths[offset++] = 48; + + if(kCGL64Bit & smodes) + c->stencil_bit_depths[offset++] = 64; + + if(kCGL96Bit & smodes) + c->stencil_bit_depths[offset++] = 96; + + if(kCGL128Bit & smodes) + c->stencil_bit_depths[offset++] = 128; + + assert(offset < GLCAPS_STENCIL_BIT_DEPTH_BUFFERS); + + c->total_stencil_bit_depths = offset; +} + +static int handleColorAndAccumulation(struct glColorBufCapabilities *c, + GLint cmodes, int forAccum) { + int offset = 0; + + /*1*/ + if(kCGLRGB444Bit & cmodes) { + c[offset].r = 4; + c[offset].g = 4; + c[offset].b = 4; + ++offset; + } + + /*2*/ + if(kCGLARGB4444Bit & cmodes) { + c[offset].a = 4; + c[offset].r = 4; + c[offset].g = 4; + c[offset].b = 4; + c[offset].is_argb = true; + ++offset; + } + + /*3*/ + if(kCGLRGB444A8Bit & cmodes) { + c[offset].r = 4; + c[offset].g = 4; + c[offset].b = 4; + c[offset].a = 8; + ++offset; + } + + /*4*/ + if(kCGLRGB555Bit & cmodes) { + c[offset].r = 5; + c[offset].g = 5; + c[offset].b = 5; + ++offset; + } + + /*5*/ + if(kCGLARGB1555Bit & cmodes) { + c[offset].a = 1; + c[offset].r = 5; + c[offset].g = 5; + c[offset].b = 5; + c[offset].is_argb = true; + ++offset; + } + + /*6*/ + if(kCGLRGB555A8Bit & cmodes) { + c[offset].r = 5; + c[offset].g = 5; + c[offset].b = 5; + c[offset].a = 8; + ++offset; + } + + /*7*/ + if(kCGLRGB565Bit & cmodes) { + c[offset].r = 5; + c[offset].g = 6; + c[offset].b = 5; + ++offset; + } + + /*8*/ + if(kCGLRGB565A8Bit & cmodes) { + c[offset].r = 5; + c[offset].g = 6; + c[offset].b = 5; + c[offset].a = 8; + ++offset; + } + + /*9*/ + if(kCGLRGB888Bit & cmodes) { + c[offset].r = 8; + c[offset].g = 8; + c[offset].b = 8; + ++offset; + } + + /*10*/ + if(kCGLARGB8888Bit & cmodes) { + c[offset].a = 8; + c[offset].r = 8; + c[offset].g = 8; + c[offset].b = 8; + c[offset].is_argb = true; + ++offset; + } + + /*11*/ + if(kCGLRGB888A8Bit & cmodes) { + c[offset].r = 8; + c[offset].g = 8; + c[offset].b = 8; + c[offset].a = 8; + ++offset; + } + + if(forAccum) { +//#if 0 + /* FIXME + * Disable this path, because some part of libGL, X, or Xplugin + * doesn't work with sizes greater than 8. + * When this is enabled and visuals are chosen using depths + * such as 16, the result is that the windows don't redraw + * and are often white, until a resize. + */ + + /*12*/ + if(kCGLRGB101010Bit & cmodes) { + c[offset].r = 10; + c[offset].g = 10; + c[offset].b = 10; + ++offset; + } + + /*13*/ + if(kCGLARGB2101010Bit & cmodes) { + c[offset].a = 2; + c[offset].r = 10; + c[offset].g = 10; + c[offset].b = 10; + c[offset].is_argb = true; + ++offset; + } + + /*14*/ + if(kCGLRGB101010_A8Bit & cmodes) { + c[offset].r = 10; + c[offset].g = 10; + c[offset].b = 10; + c[offset].a = 8; + ++offset; + } + + /*15*/ + if(kCGLRGB121212Bit & cmodes) { + c[offset].r = 12; + c[offset].g = 12; + c[offset].b = 12; + ++offset; + } + + /*16*/ + if(kCGLARGB12121212Bit & cmodes) { + c[offset].a = 12; + c[offset].r = 12; + c[offset].g = 12; + c[offset].b = 12; + c[offset].is_argb = true; + ++offset; + } + + /*17*/ + if(kCGLRGB161616Bit & cmodes) { + c[offset].r = 16; + c[offset].g = 16; + c[offset].b = 16; + ++offset; + } + + /*18*/ + if(kCGLRGBA16161616Bit & cmodes) { + c[offset].r = 16; + c[offset].g = 16; + c[offset].b = 16; + c[offset].a = 16; + ++offset; + } + } +//#endif + + /* FIXME should we handle the floating point color modes, and if so, how? */ + + return offset; +} + + +static void handleColorModes(struct glCapabilitiesConfig *c, GLint cmodes) { + c->total_color_buffers = handleColorAndAccumulation(c->color_buffers, + cmodes, 0); + + assert(c->total_color_buffers < GLCAPS_COLOR_BUFFERS); +} + +static void handleAccumulationModes(struct glCapabilitiesConfig *c, GLint cmodes) { + c->total_accum_buffers = handleColorAndAccumulation(c->accum_buffers, + cmodes, 1); + assert(c->total_accum_buffers < GLCAPS_COLOR_BUFFERS); +} + +static void handleDepthModes(struct glCapabilitiesConfig *c, GLint dmodes) { + int offset = 0; +#define DEPTH(flag,value) do { \ + if(dmodes & flag) { \ + c->depth_buffers[offset++] = value; \ + } \ + } while(0) + + /*1*/ + DEPTH(kCGL0Bit, 0); + /*2*/ + DEPTH(kCGL1Bit, 1); + /*3*/ + DEPTH(kCGL2Bit, 2); + /*4*/ + DEPTH(kCGL3Bit, 3); + /*5*/ + DEPTH(kCGL4Bit, 4); + /*6*/ + DEPTH(kCGL5Bit, 5); + /*7*/ + DEPTH(kCGL6Bit, 6); + /*8*/ + DEPTH(kCGL8Bit, 8); + /*9*/ + DEPTH(kCGL10Bit, 10); + /*10*/ + DEPTH(kCGL12Bit, 12); + /*11*/ + DEPTH(kCGL16Bit, 16); + /*12*/ + DEPTH(kCGL24Bit, 24); + /*13*/ + DEPTH(kCGL32Bit, 32); + /*14*/ + DEPTH(kCGL48Bit, 48); + /*15*/ + DEPTH(kCGL64Bit, 64); + /*16*/ + DEPTH(kCGL96Bit, 96); + /*17*/ + DEPTH(kCGL128Bit, 128); + +#undef DEPTH + + c->total_depth_buffer_depths = offset; + assert(c->total_depth_buffer_depths < GLCAPS_DEPTH_BUFFERS); +} + +/* Return non-zero if an error occured. */ +static CGLError handleRendererDescriptions(CGLRendererInfoObj info, GLint r, + struct glCapabilitiesConfig *c) { + CGLError err; + GLint accelerated = 0, flags = 0, aux = 0, samplebufs = 0, samples = 0; + + err = CGLDescribeRenderer (info, r, kCGLRPAccelerated, &accelerated); + + if(err) + return err; + + c->accelerated = accelerated; + + /* Buffering modes: single/double, stereo */ + err = CGLDescribeRenderer(info, r, kCGLRPBufferModes, &flags); + + if(err) + return err; + + handleBufferModes(c, flags); + + /* AUX buffers */ + err = CGLDescribeRenderer(info, r, kCGLRPMaxAuxBuffers, &aux); + + if(err) + return err; + + c->aux_buffers = aux; + + + /* Depth buffer size */ + err = CGLDescribeRenderer(info, r, kCGLRPDepthModes, &flags); + + if(err) + return err; + + handleDepthModes(c, flags); + + + /* Multisample buffers */ + err = CGLDescribeRenderer(info, r, kCGLRPMaxSampleBuffers, &samplebufs); + + if(err) + return err; + + c->multisample_buffers = samplebufs; + + + /* Multisample samples per multisample buffer */ + err = CGLDescribeRenderer(info, r, kCGLRPMaxSamples, &samples); + + if(err) + return err; + + c->multisample_samples = samples; + + + /* Stencil bit depths */ + err = CGLDescribeRenderer(info, r, kCGLRPStencilModes, &flags); + + if(err) + return err; + + handleStencilModes(c, flags); + + + /* Color modes (RGB/RGBA depths supported */ + err = CGLDescribeRenderer(info, r, kCGLRPColorModes, &flags); + + if(err) + return err; + + handleColorModes(c, flags); + + err = CGLDescribeRenderer(info, r, kCGLRPAccumModes, &flags); + + if(err) + return err; + + handleAccumulationModes(c, flags); + + return kCGLNoError; +} + +static void initCapabilities(struct glCapabilities *cap) { + cap->configurations = NULL; + cap->total_configurations = 0; +} + +static void initConfig(struct glCapabilitiesConfig *c) { + int i; + + c->accelerated = false; + c->stereo = false; + c->aux_buffers = 0; + c->buffers = 0; + + c->total_depth_buffer_depths = 0; + + for(i = 0; i < GLCAPS_DEPTH_BUFFERS; ++i) { + c->depth_buffers[i] = GLCAPS_INVALID_DEPTH_VALUE; + } + + c->multisample_buffers = 0; + c->multisample_samples = 0; + + c->total_stencil_bit_depths = 0; + + for(i = 0; i < GLCAPS_STENCIL_BIT_DEPTH_BUFFERS; ++i) { + c->stencil_bit_depths[i] = GLCAPS_INVALID_STENCIL_DEPTH; + } + + c->total_color_buffers = 0; + + for(i = 0; i < GLCAPS_COLOR_BUFFERS; ++i) { + c->color_buffers[i].r = c->color_buffers[i].g = + c->color_buffers[i].b = c->color_buffers[i].a = + GLCAPS_COLOR_BUF_INVALID_VALUE; + c->color_buffers[i].is_argb = false; + } + + c->total_accum_buffers = 0; + + for(i = 0; i < GLCAPS_COLOR_BUFFERS; ++i) { + c->accum_buffers[i].r = c->accum_buffers[i].g = + c->accum_buffers[i].b = c->accum_buffers[i].a = + GLCAPS_COLOR_BUF_INVALID_VALUE; + c->accum_buffers[i].is_argb = false; + } + + c->next = NULL; +} + +void freeGlCapabilities(struct glCapabilities *cap) { + struct glCapabilitiesConfig *conf, *next; + + conf = cap->configurations; + + while(conf) { + next = conf->next; + free(conf); + conf = next; + } + + cap->configurations = NULL; +} + +/*Return true if an error occured. */ +bool getGlCapabilities(struct glCapabilities *cap) { + CGLRendererInfoObj info; + CGLError err; + GLint numRenderers = 0, r; + + initCapabilities(cap); + + err = CGLQueryRendererInfo((GLuint)-1, &info, &numRenderers); + if(err) { + ErrorF("CGLQueryRendererInfo error: %s\n", CGLErrorString(err)); + return err; + } + + for(r = 0; r < numRenderers; r++) { + struct glCapabilitiesConfig tmpconf, *conf; + + initConfig(&tmpconf); + + err = handleRendererDescriptions(info, r, &tmpconf); + if(err) { + ErrorF("handleRendererDescriptions returned error: %s\n", CGLErrorString(err)); + ErrorF("trying to continue...\n"); + continue; + } + + conf = malloc(sizeof(*conf)); + if(NULL == conf) { + FatalError("Unable to allocate memory for OpenGL capabilities\n"); + } + + /* Copy the struct. */ + *conf = tmpconf; + + /* Now link the configuration into the list. */ + conf->next = cap->configurations; + cap->configurations = conf; + } + + CGLDestroyRendererInfo(info); + + /* No error occured. We are done. */ + return kCGLNoError; +} |