618fa10949
Instead of using a different function pointer table for ES 1.x and ES 2.x, we use a single one that is the union (sort|uniq) of both tables. Two instances of this table are initialized with pointers to GL ES 1.x and GL ES 2.x entry-points. When a context is created, we store its version number and when it is bound to a thread we set the approruiate table based on the stored version. This introduce no penalty while dispatching gl calls to the right API version. [Pending Dr No approval for MR1]
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
/*
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** Copyright 2007, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#include <ctype.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <cutils/log.h>
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#include <cutils/properties.h>
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#include "hooks.h"
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#include "egl_impl.h"
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using namespace android;
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// ----------------------------------------------------------------------------
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// Actual GL entry-points
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// ----------------------------------------------------------------------------
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#undef API_ENTRY
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#undef CALL_GL_API
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#undef CALL_GL_API_RETURN
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#if USE_FAST_TLS_KEY
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#define API_ENTRY(_api) __attribute__((naked)) _api
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#define CALL_GL_API(_api, ...) \
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asm volatile( \
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"mov r12, #0xFFFF0FFF \n" \
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"ldr r12, [r12, #-15] \n" \
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"ldr r12, [r12, %[tls]] \n" \
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"cmp r12, #0 \n" \
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"ldrne pc, [r12, %[api]] \n" \
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"bx lr \n" \
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: \
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: [tls] "J"(TLS_SLOT_OPENGL_API*4), \
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[api] "J"(__builtin_offsetof(gl_hooks_t, gl._api)) \
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: \
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);
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#define CALL_GL_API_RETURN(_api, ...) \
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CALL_GL_API(_api, __VA_ARGS__) \
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return 0; // placate gcc's warnings. never reached.
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#else
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#define API_ENTRY(_api) _api
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#define CALL_GL_API(_api, ...) \
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gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \
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_c->_api(__VA_ARGS__)
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#define CALL_GL_API_RETURN(_api, ...) \
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gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \
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return _c->_api(__VA_ARGS__)
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#endif
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extern "C" {
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#include "gl2_api.in"
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#include "gl2ext_api.in"
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}
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#undef API_ENTRY
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#undef CALL_GL_API
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#undef CALL_GL_API_RETURN
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/*
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* These GL calls are special because they need to EGL to retrieve some
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* informations before they can execute.
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*/
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extern "C" void __glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image);
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extern "C" void __glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image);
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void glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image)
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{
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GLeglImageOES implImage =
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(GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
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__glEGLImageTargetTexture2DOES(target, implImage);
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}
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void glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
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{
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GLeglImageOES implImage =
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(GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
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__glEGLImageTargetRenderbufferStorageOES(target, image);
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}
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