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Diffstat (limited to 'opengl/libs/GLES2/gl2.cpp')
| -rw-r--r-- | opengl/libs/GLES2/gl2.cpp | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/opengl/libs/GLES2/gl2.cpp b/opengl/libs/GLES2/gl2.cpp new file mode 100644 index 0000000..b8e3283 --- /dev/null +++ b/opengl/libs/GLES2/gl2.cpp @@ -0,0 +1,119 @@ +/* + ** Copyright 2007, The Android Open Source Project + ** + ** Licensed under the Apache License, Version 2.0 (the "License"); + ** you may not use this file except in compliance with the License. + ** You may obtain a copy of the License at + ** + ** http://www.apache.org/licenses/LICENSE-2.0 + ** + ** Unless required by applicable law or agreed to in writing, software + ** distributed under the License is distributed on an "AS IS" BASIS, + ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + ** See the License for the specific language governing permissions and + ** limitations under the License. + */ + +#include <ctype.h> +#include <string.h> +#include <errno.h> + +#include <sys/ioctl.h> + +#include <GLES2/gl2.h> +#include <GLES2/gl2ext.h> + +#include <cutils/log.h> +#include <cutils/properties.h> + +#include "hooks.h" +#include "egl_impl.h" + +using namespace android; + +// ---------------------------------------------------------------------------- +// Actual GL entry-points +// ---------------------------------------------------------------------------- + +#undef API_ENTRY +#undef CALL_GL_API +#undef CALL_GL_API_RETURN + +#if USE_FAST_TLS_KEY + + #ifdef HAVE_ARM_TLS_REGISTER + #define GET_TLS(reg) \ + "mrc p15, 0, " #reg ", c13, c0, 3 \n" + #else + #define GET_TLS(reg) \ + "mov " #reg ", #0xFFFF0FFF \n" \ + "ldr " #reg ", [" #reg ", #-15] \n" + #endif + + #define API_ENTRY(_api) __attribute__((naked)) _api + + #define CALL_GL_API(_api, ...) \ + asm volatile( \ + GET_TLS(r12) \ + "ldr r12, [r12, %[tls]] \n" \ + "cmp r12, #0 \n" \ + "ldrne pc, [r12, %[api]] \n" \ + "bx lr \n" \ + : \ + : [tls] "J"(TLS_SLOT_OPENGL_API*4), \ + [api] "J"(__builtin_offsetof(gl_hooks_t, gl._api)) \ + : \ + ); + + #define CALL_GL_API_RETURN(_api, ...) \ + CALL_GL_API(_api, __VA_ARGS__) \ + return 0; // placate gcc's warnings. never reached. + +#else + + #define API_ENTRY(_api) _api + + #define CALL_GL_API(_api, ...) \ + gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \ + _c->_api(__VA_ARGS__) + + #define CALL_GL_API_RETURN(_api, ...) \ + gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \ + return _c->_api(__VA_ARGS__) + +#endif + + +extern "C" { +#include "gl2_api.in" +#include "gl2ext_api.in" +} + +#undef API_ENTRY +#undef CALL_GL_API +#undef CALL_GL_API_RETURN + + +/* + * These GL calls are special because they need to EGL to retrieve some + * informations before they can execute. + */ + +extern "C" void __glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image); +extern "C" void __glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image); + + +void glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image) +{ + GLeglImageOES implImage = + (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image); + __glEGLImageTargetTexture2DOES(target, implImage); +} + +void glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image) +{ + GLeglImageOES implImage = + (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image); + __glEGLImageTargetRenderbufferStorageOES(target, image); +} + |