/* ** 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 <GLES/gl.h> #include <GLES/glext.h> #include <cutils/log.h> #include <cutils/properties.h> #include "hooks.h" #include "egl_impl.h" using namespace android; // set this to 1 for crude GL debugging #define CHECK_FOR_GL_ERRORS 0 // ---------------------------------------------------------------------------- // extensions for the framework // ---------------------------------------------------------------------------- extern "C" { GL_API void GL_APIENTRY glColorPointerBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr, GLsizei count); GL_API void GL_APIENTRY glNormalPointerBounds(GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count); GL_API void GL_APIENTRY glTexCoordPointerBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count); GL_API void GL_APIENTRY glVertexPointerBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count); GL_API void GL_APIENTRY glPointSizePointerOESBounds(GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count); GL_API void GL_APIENTRY glMatrixIndexPointerOESBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count); GL_API void GL_APIENTRY glWeightPointerOESBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count); } void glColorPointerBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr, GLsizei count) { glColorPointer(size, type, stride, ptr); } void glNormalPointerBounds(GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count) { glNormalPointer(type, stride, pointer); } void glTexCoordPointerBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count) { glTexCoordPointer(size, type, stride, pointer); } void glVertexPointerBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count) { glVertexPointer(size, type, stride, pointer); } void GL_APIENTRY glPointSizePointerOESBounds(GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count) { glPointSizePointerOES(type, stride, pointer); } GL_API void GL_APIENTRY glMatrixIndexPointerOESBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count) { glMatrixIndexPointerOES(size, type, stride, pointer); } GL_API void GL_APIENTRY glWeightPointerOESBounds(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer, GLsizei count) { glWeightPointerOES(size, type, stride, pointer); } // ---------------------------------------------------------------------------- // Actual GL entry-points // ---------------------------------------------------------------------------- #undef API_ENTRY #undef CALL_GL_API #undef CALL_GL_API_RETURN #if USE_FAST_TLS_KEY && !CHECK_FOR_GL_ERRORS #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" \ "mov r0, #0 \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 #if CHECK_FOR_GL_ERRORS #define CHECK_GL_ERRORS(_api) \ do { GLint err = glGetError(); \ LOGE_IF(err != GL_NO_ERROR, "%s failed (0x%04X)", #_api, err); \ } while(false); #else #define CHECK_GL_ERRORS(_api) do { } while(false); #endif #define API_ENTRY(_api) _api #define CALL_GL_API(_api, ...) \ gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \ _c->_api(__VA_ARGS__); \ CHECK_GL_ERRORS(_api) #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 "gl_api.in" #include "glext_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, implImage); }