/* * Clutter COGL * * A basic GL/GLES Abstraction/Utility Layer * * Authored By Matthew Allum * * Copyright (C) 2008 OpenedHand * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifndef __COGL_GLES2_WRAPPER_H__ #define __COGL_GLES2_WRAPPER_H__ G_BEGIN_DECLS #ifdef HAVE_COGL_GLES2 typedef struct _CoglGles2Wrapper CoglGles2Wrapper; /* Must be a power of two */ #define COGL_GLES2_MODELVIEW_STACK_SIZE 32 #define COGL_GLES2_PROJECTION_STACK_SIZE 2 #define COGL_GLES2_TEXTURE_STACK_SIZE 2 struct _CoglGles2Wrapper { GLuint program; GLuint vertex_shader; GLuint fragment_shader; GLint mvp_matrix_uniform; GLint texture_matrix_uniform; GLint texture_2d_enabled_uniform; GLint bound_texture_uniform; GLint alpha_only_uniform; GLuint matrix_mode; GLfloat modelview_stack[COGL_GLES2_MODELVIEW_STACK_SIZE * 16]; GLuint modelview_stack_pos; GLfloat projection_stack[COGL_GLES2_PROJECTION_STACK_SIZE * 16]; GLuint projection_stack_pos; GLfloat texture_stack[COGL_GLES2_TEXTURE_STACK_SIZE * 16]; GLuint texture_stack_pos; /* The combined modelview and projection matrix is only updated at the last minute in glDrawArrays to avoid recalculating it for every change to the modelview matrix */ GLboolean mvp_uptodate; }; /* These defines are missing from GL ES 2 but we can still use them with the wrapper funcions */ #ifndef GL_MODELVIEW #define GL_MODELVIEW 0x1700 #define GL_PROJECTION 0x1701 #define GL_VERTEX_ARRAY 0x8074 #define GL_TEXTURE_COORD_ARRAY 0x8078 #define GL_COLOR_ARRAY 0x8076 #define GL_LIGHTING 0x0B50 #define GL_ALPHA_TEST 0x0BC0 #define GL_FOG 0x0B60 #define GL_FOG_COLOR 0x0B66 #define GL_FOG_MODE 0x0B65 #define GL_FOG_HINT 0x0C54 #define GL_FOG_DENSITY 0x0B62 #define GL_FOG_START 0x0B63 #define GL_FOG_END 0x0B64 #define GL_CLIP_PLANE0 0x3000 #define GL_CLIP_PLANE1 0x3001 #define GL_CLIP_PLANE2 0x3002 #define GL_CLIP_PLANE3 0x3003 #define GL_MAX_CLIP_PLANES 0x0D32 #define GL_MODELVIEW_MATRIX 0x0BA6 #define GL_PROJECTION_MATRIX 0x0BA7 #define GL_GENERATE_MIPMAP 0x8191 #define GL_TEXTURE_ENV 0x2300 #define GL_TEXTURE_ENV_MODE 0x2200 #define GL_MODULATE 0x2100 #endif /* GL_MODELVIEW */ void cogl_gles2_wrapper_init (CoglGles2Wrapper *wrapper); void cogl_gles2_wrapper_deinit (CoglGles2Wrapper *wrapper); void cogl_wrap_glClearColorx (GLclampx r, GLclampx g, GLclampx b, GLclampx a); void cogl_wrap_glPushMatrix (); void cogl_wrap_glPopMatrix (); void cogl_wrap_glMatrixMode (GLenum mode); void cogl_wrap_glLoadIdentity (); void cogl_wrap_glMultMatrixx (const GLfixed *m); void cogl_wrap_glScalex (GLfixed x, GLfixed y, GLfixed z); void cogl_wrap_glTranslatex (GLfixed x, GLfixed y, GLfixed z); void cogl_wrap_glRotatex (GLfixed angle, GLfixed x, GLfixed y, GLfixed z); void cogl_wrap_glOrthox (GLfixed left, GLfixed right, GLfixed bottom, GLfixed top, GLfixed near, GLfixed far); void cogl_wrap_glEnable (GLenum cap); void cogl_wrap_glDisable (GLenum cap); void cogl_wrap_glTexCoordPointer (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer); void cogl_wrap_glVertexPointer (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer); void cogl_wrap_glColorPointer (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer); void cogl_wrap_glTexEnvx (GLenum target, GLenum pname, GLfixed param); void cogl_wrap_glEnableClientState (GLenum array); void cogl_wrap_glDisableClientState (GLenum array); void cogl_wrap_glAlphaFunc (GLenum func, GLclampf ref); void cogl_wrap_glColor4x (GLclampx r, GLclampx g, GLclampx b, GLclampx a); void cogl_wrap_glClipPlanex (GLenum plane, GLfixed *equation); void cogl_wrap_glGetFixedv (GLenum pname, GLfixed *params); void cogl_wrap_glFogx (GLenum pname, GLfixed param); void cogl_wrap_glFogxv (GLenum pname, const GLfixed *params); void cogl_wrap_glDrawArrays (GLenum mode, GLint first, GLsizei count); void cogl_wrap_glTexParameteri (GLenum target, GLenum pname, GLfloat param); void cogl_gles2_wrapper_bind_texture (GLenum target, GLuint texture, GLenum internal_format); /* This function is only available on GLES 2 */ #define cogl_wrap_glGenerateMipmap glGenerateMipmap #else /* HAVE_COGL_GLES2 */ /* If we're not using GL ES 2 then just use the GL functions directly */ #define cogl_wrap_glClearColorx glClearColorx #define cogl_wrap_glDrawArrays glDrawArrays #define cogl_wrap_glPushMatrix glPushMatrix #define cogl_wrap_glPopMatrix glPopMatrix #define cogl_wrap_glMatrixMode glMatrixMode #define cogl_wrap_glLoadIdentity glLoadIdentity #define cogl_wrap_glMultMatrixx glMultMatrixx #define cogl_wrap_glScalex glScalex #define cogl_wrap_glTranslatex glTranslatex #define cogl_wrap_glRotatex glRotatex #define cogl_wrap_glOrthox glOrthox #define cogl_wrap_glEnable glEnable #define cogl_wrap_glDisable glDisable #define cogl_wrap_glTexCoordPointer glTexCoordPointer #define cogl_wrap_glVertexPointer glVertexPointer #define cogl_wrap_glColorPointer glColorPointer #define cogl_wrap_glTexEnvx glTexEnvx #define cogl_wrap_glEnableClientState glEnableClientState #define cogl_wrap_glDisableClientState glDisableClientState #define cogl_wrap_glAlphaFunc glAlphaFunc #define cogl_wrap_glColor4x glColor4x #define cogl_wrap_glClipPlanex glClipPlanex #define cogl_wrap_glGetFixedv glGetFixedv #define cogl_wrap_glFogx glFogx #define cogl_wrap_glFogxv glFogxv #define cogl_wrap_glTexParameteri glTexParameteri /* The extra third parameter of the bind texture wrapper isn't needed so we can just directly call glBindTexture */ #define cogl_gles2_wrapper_bind_texture(target, texture, internal_format) \ glBindTexture ((target), (texture)) /* COGL uses the automatic mipmap generation for GLES 1 so glGenerateMipmap doesn't need to do anything */ #define cogl_wrap_glGenerateMipmap(x) ((void) 0) #endif /* HAVE_COGL_GLES2 */ G_END_DECLS #endif /* __COGL_GLES2_WRAPPER_H__ */