Initial commit of libAgl2 using Pixelflinger2 in external/mesa3d
Somewhat functional, refer to README for details.
Need to enable Android.mk to build.
It builds libGLES_android.so, which needs to replace
the one in system/lib/egl built by libagl.
Change-Id: Iec3aaa8f3963a4185d81955cd24019eb0c4a5850
Signed-off-by: David Li <davidxli@google.com>
diff --git a/opengl/libagl2/src/gles2context.h b/opengl/libagl2/src/gles2context.h
new file mode 100644
index 0000000..cec0340
--- /dev/null
+++ b/opengl/libagl2/src/gles2context.h
@@ -0,0 +1,166 @@
+#define _SIZE_T_DEFINED_
+typedef unsigned int size_t;
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+
+#include <utils/threads.h>
+#include <pthread.h>
+
+#include <cutils/log.h>
+
+#include <assert.h>
+
+#ifdef __arm__
+#ifndef __location__
+#define __HIERALLOC_STRING_0__(s) #s
+#define __HIERALLOC_STRING_1__(s) __HIERALLOC_STRING_0__(s)
+#define __HIERALLOC_STRING_2__ __HIERALLOC_STRING_1__(__LINE__)
+#define __location__ __FILE__ ":" __HIERALLOC_STRING_2__
+#endif
+#undef assert
+#define assert(EXPR) { do { if (!(EXPR)) {LOGD("\n*\n*\n*\n* assert fail: '"#EXPR"' at "__location__"\n*\n*\n*\n*"); exit(EXIT_FAILURE); } } while (false); }
+//#define printf LOGD
+#else // #ifdef __arm__
+//#define LOGD printf
+#endif // #ifdef __arm__
+
+
+#include <pixelflinger2/pixelflinger2_format.h>
+#include <pixelflinger2/pixelflinger2.h>
+
+#include <map>
+
+typedef uint8_t GGLubyte; // ub
+
+#define ggl_likely(x) __builtin_expect(!!(x), 1)
+#define ggl_unlikely(x) __builtin_expect(!!(x), 0)
+
+#undef NELEM
+#define NELEM(x) (sizeof(x)/sizeof(*(x)))
+
+template<typename T>
+inline T max(T a, T b)
+{
+ return a<b ? b : a;
+}
+
+template<typename T>
+inline T min(T a, T b)
+{
+ return a<b ? a : b;
+}
+
+struct egl_context_t {
+ enum {
+ IS_CURRENT = 0x00010000,
+ NEVER_CURRENT = 0x00020000
+ };
+ uint32_t flags;
+ EGLDisplay dpy;
+ EGLConfig config;
+ EGLSurface read;
+ EGLSurface draw;
+
+ unsigned frame;
+ clock_t lastSwapTime;
+ float accumulateSeconds;
+
+ static inline egl_context_t* context(EGLContext ctx);
+};
+
+struct GLES2Context;
+
+#ifdef HAVE_ANDROID_OS
+#include <bionic_tls.h>
+// We have a dedicated TLS slot in bionic
+inline void setGlThreadSpecific(GLES2Context *value)
+{
+ ((uint32_t *)__get_tls())[TLS_SLOT_OPENGL] = (uint32_t)value;
+}
+inline GLES2Context* getGlThreadSpecific()
+{
+ return (GLES2Context *)(((unsigned *)__get_tls())[TLS_SLOT_OPENGL]);
+}
+#else
+extern pthread_key_t gGLKey;
+inline void setGlThreadSpecific(GLES2Context *value)
+{
+ pthread_setspecific(gGLKey, value);
+}
+inline GLES2Context* getGlThreadSpecific()
+{
+ return static_cast<GLES2Context*>(pthread_getspecific(gGLKey));
+}
+#endif
+
+struct VBO {
+ unsigned size;
+ GLenum usage;
+ void * data;
+};
+
+struct GLES2Context {
+ GGLContext rasterizer;
+ egl_context_t egl;
+ GGLInterface * iface; // shortcut to &rasterizer.interface
+
+ struct VertexState {
+ struct VertAttribPointer {
+ unsigned size; // number of values per vertex
+ GLenum type; // data type
+ unsigned stride; // bytes
+ const void * ptr;
+bool normalized :
+ 1;
+bool enabled :
+ 1;
+ } attribs [GGL_MAXVERTEXATTRIBS];
+
+ VBO * vbo, * indices;
+ std::map<GLuint, VBO *> vbos;
+ GLuint free;
+
+ Vector4 defaultAttribs [GGL_MAXVERTEXATTRIBS];
+ } vert;
+
+ struct TextureState {
+ GGLTexture * tmus[GGL_MAXCOMBINEDTEXTUREIMAGEUNITS];
+ int sampler2tmu[GGL_MAXCOMBINEDTEXTUREIMAGEUNITS]; // sampler2tmu[sampler] is index of tmu, -1 means not used
+ unsigned active;
+ std::map<GLuint, GGLTexture *> textures;
+ GLuint free; // first possible free name
+ GGLTexture * tex2D, * texCube; // default textures
+ unsigned unpack;
+
+ void UpdateSampler(GGLInterface * iface, unsigned tmu);
+ } tex;
+
+ GLES2Context();
+ void InitializeTextures();
+ void InitializeVertices();
+
+ ~GLES2Context();
+ void UninitializeTextures();
+ void UninitializeVertices();
+
+ static inline GLES2Context* get() {
+ return getGlThreadSpecific();
+ }
+};
+
+inline egl_context_t* egl_context_t::context(EGLContext ctx)
+{
+ GLES2Context* const gl = static_cast<GLES2Context*>(ctx);
+ return static_cast<egl_context_t*>(&gl->egl);
+}
+
+#define GLES2_GET_CONTEXT(ctx) GLES2Context * ctx = GLES2Context::get(); \
+ /*puts(__FUNCTION__);*/
+#define GLES2_GET_CONST_CONTEXT(ctx) GLES2Context * ctx = GLES2Context::get(); \
+ /*puts(__FUNCTION__);*/