/* ** 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 #include #include #include #include #include #include #include #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 #if defined(__arm__) #define GET_TLS(reg) "mrc p15, 0, " #reg ", c13, c0, 3 \n" #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)) \ : \ ); #elif defined(__mips__) #define API_ENTRY(_api) __attribute__((noinline)) _api #define CALL_GL_API(_api, ...) \ register unsigned int t0 asm("t0"); \ register unsigned int fn asm("t1"); \ register unsigned int tls asm("v1"); \ register unsigned int v0 asm("v0"); \ asm volatile( \ ".set push\n\t" \ ".set noreorder\n\t" \ ".set mips32r2\n\t" \ "rdhwr %[tls], $29\n\t" \ "lw %[t0], %[OPENGL_API](%[tls])\n\t" \ "beqz %[t0], 1f\n\t" \ " move %[fn], $ra\n\t" \ "lw %[fn], %[API](%[t0])\n\t" \ "movz %[fn], $ra, %[fn]\n\t" \ "1:\n\t" \ "j %[fn]\n\t" \ " move %[v0], $0\n\t" \ ".set pop\n\t" \ : [fn] "=c"(fn), \ [tls] "=&r"(tls), \ [t0] "=&r"(t0), \ [v0] "=&r"(v0) \ : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \ [API] "I"(__builtin_offsetof(gl_hooks_t, gl._api)) \ : \ ); #else #error Unsupported architecture #endif #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(); \ ALOGE_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 /* * glGetString() is special because we expose some extensions in the wrapper */ extern "C" const GLubyte * __glGetString(GLenum name); const GLubyte * glGetString(GLenum name) { const GLubyte * ret = egl_get_string_for_current_context(name); if (ret == NULL) { ret = __glGetString(name); } return ret; }