908 lines
32 KiB
C++
908 lines
32 KiB
C++
// ---------------------------------------------------------------------------
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//
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// @file TwOpenGL.cpp
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// @author Philippe Decaudin - http://www.antisphere.com
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// @license This file is part of the AntTweakBar library.
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// For conditions of distribution and use, see License.txt
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//
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// ---------------------------------------------------------------------------
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#include "TwPrecomp.h"
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#include "LoadOGL.h"
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#include "TwOpenGL.h"
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#include "TwMgr.h"
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using namespace std;
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const char *g_ErrCantLoadOGL = "Cannot load OpenGL library dynamically";
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const char *g_ErrCantUnloadOGL = "Cannot unload OpenGL library";
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GLuint g_SmallFontTexID = 0;
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GLuint g_NormalFontTexID = 0;
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GLuint g_LargeFontTexID = 0;
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// ---------------------------------------------------------------------------
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// Extensions
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typedef void (APIENTRY * PFNGLBindBufferARB)(GLenum target, GLuint buffer);
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typedef void (APIENTRY * PFNGLBindProgramARB)(GLenum target, GLuint program);
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typedef GLuint (APIENTRY * PFNGLGetHandleARB)(GLenum pname);
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typedef void (APIENTRY * PFNGLUseProgramObjectARB)(GLuint programObj);
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typedef void (APIENTRY * PFNGLTexImage3D)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
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typedef void (APIENTRY * PFNGLActiveTextureARB)(GLenum texture);
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typedef void (APIENTRY * PFNGLClientActiveTextureARB)(GLenum texture);
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typedef void (APIENTRY * PFNGLBlendEquation)(GLenum mode);
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typedef void (APIENTRY * PFNGLBlendEquationSeparate)(GLenum srcMode, GLenum dstMode);
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typedef void (APIENTRY * PFNGLBlendFuncSeparate)(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
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typedef void (APIENTRY * PFNGLBindVertexArray)(GLuint array);
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typedef void (APIENTRY * PFNGLEnableVertexAttribArray) (GLuint index);
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typedef void (APIENTRY * PFNGLDisableVertexAttribArray) (GLuint index);
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typedef void (APIENTRY * PFNGLGetVertexAttribiv) (GLuint, GLenum, GLint*);
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PFNGLBindBufferARB _glBindBufferARB = NULL;
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PFNGLBindProgramARB _glBindProgramARB = NULL;
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PFNGLGetHandleARB _glGetHandleARB = NULL;
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PFNGLUseProgramObjectARB _glUseProgramObjectARB = NULL;
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PFNGLTexImage3D _glTexImage3D = NULL;
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PFNGLActiveTextureARB _glActiveTextureARB = NULL;
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PFNGLClientActiveTextureARB _glClientActiveTextureARB = NULL;
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PFNGLBlendEquation _glBlendEquation = NULL;
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PFNGLBlendEquationSeparate _glBlendEquationSeparate = NULL;
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PFNGLBlendFuncSeparate _glBlendFuncSeparate = NULL;
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PFNGLBindVertexArray _glBindVertexArray = NULL;
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PFNGLEnableVertexAttribArray _glEnableVertexAttribArray = NULL;
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PFNGLDisableVertexAttribArray _glDisableVertexAttribArray = NULL;
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PFNGLGetVertexAttribiv _glGetVertexAttribiv = NULL;
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#ifndef GL_ARRAY_BUFFER_ARB
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# define GL_ARRAY_BUFFER_ARB 0x8892
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#endif
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#ifndef GL_ELEMENT_ARRAY_BUFFER_ARB
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# define GL_ELEMENT_ARRAY_BUFFER_ARB 0x8893
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#endif
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#ifndef GL_ARRAY_BUFFER_BINDING_ARB
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# define GL_ARRAY_BUFFER_BINDING_ARB 0x8894
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#endif
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#ifndef GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB
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# define GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB 0x8895
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#endif
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#ifndef GL_VERTEX_PROGRAM_ARB
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# define GL_VERTEX_PROGRAM_ARB 0x8620
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#endif
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#ifndef GL_FRAGMENT_PROGRAM_ARB
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# define GL_FRAGMENT_PROGRAM_ARB 0x8804
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#endif
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#ifndef GL_PROGRAM_OBJECT_ARB
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# define GL_PROGRAM_OBJECT_ARB 0x8B40
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#endif
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#ifndef GL_TEXTURE_3D
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# define GL_TEXTURE_3D 0x806F
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#endif
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#ifndef GL_TEXTURE0_ARB
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# define GL_TEXTURE0_ARB 0x84C0
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#endif
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#ifndef GL_ACTIVE_TEXTURE_ARB
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# define GL_ACTIVE_TEXTURE_ARB 0x84E0
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#endif
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#ifndef GL_CLIENT_ACTIVE_TEXTURE_ARB
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# define GL_CLIENT_ACTIVE_TEXTURE_ARB 0x84E1
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#endif
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#ifndef GL_MAX_TEXTURE_UNITS_ARB
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# define GL_MAX_TEXTURE_UNITS_ARB 0x84E2
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#endif
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#ifndef GL_MAX_TEXTURE_COORDS
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# define GL_MAX_TEXTURE_COORDS 0x8871
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#endif
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#ifndef GL_TEXTURE_RECTANGLE_ARB
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# define GL_TEXTURE_RECTANGLE_ARB 0x84F5
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#endif
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#ifndef GL_FUNC_ADD
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# define GL_FUNC_ADD 0x8006
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#endif
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#ifndef GL_BLEND_EQUATION
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# define GL_BLEND_EQUATION 0x8009
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#endif
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#ifndef GL_BLEND_EQUATION_RGB
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# define GL_BLEND_EQUATION_RGB GL_BLEND_EQUATION
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#endif
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#ifndef GL_BLEND_EQUATION_ALPHA
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# define GL_BLEND_EQUATION_ALPHA 0x883D
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#endif
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#ifndef GL_BLEND_SRC_RGB
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# define GL_BLEND_SRC_RGB 0x80C9
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#endif
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#ifndef GL_BLEND_DST_RGB
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# define GL_BLEND_DST_RGB 0x80C8
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#endif
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#ifndef GL_BLEND_SRC_ALPHA
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# define GL_BLEND_SRC_ALPHA 0x80CB
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#endif
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#ifndef GL_BLEND_DST_ALPHA
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# define GL_BLEND_DST_ALPHA 0x80CA
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#endif
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#ifndef GL_VERTEX_ARRAY_BINDING
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# define GL_VERTEX_ARRAY_BINDING 0x85B5
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#endif
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#ifndef GL_MAX_VERTEX_ATTRIBS
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# define GL_MAX_VERTEX_ATTRIBS 0x8869
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#endif
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#ifndef GL_VERTEX_ATTRIB_ARRAY_ENABLED
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# define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
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#endif
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// ---------------------------------------------------------------------------
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#ifdef _DEBUG
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static void CheckGLError(const char *file, int line, const char *func)
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{
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int err=0;
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char msg[256];
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while( (err=_glGetError())!=0 )
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{
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sprintf(msg, "%s(%d) : [%s] GL_ERROR=0x%x\n", file, line, func, err);
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#ifdef ANT_WINDOWS
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OutputDebugString(msg);
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#endif
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fprintf(stderr, msg);
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}
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}
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# ifdef __FUNCTION__
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# define CHECK_GL_ERROR CheckGLError(__FILE__, __LINE__, __FUNCTION__)
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# else
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# define CHECK_GL_ERROR CheckGLError(__FILE__, __LINE__, "")
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# endif
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#else
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# define CHECK_GL_ERROR ((void)(0))
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#endif
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// ---------------------------------------------------------------------------
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static GLuint BindFont(const CTexFont *_Font)
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{
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GLuint TexID = 0;
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_glGenTextures(1, &TexID);
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_glBindTexture(GL_TEXTURE_2D, TexID);
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_glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
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_glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
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_glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
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_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
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_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
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_glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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_glPixelTransferf(GL_ALPHA_SCALE, 1);
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_glPixelTransferf(GL_ALPHA_BIAS, 0);
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_glPixelTransferf(GL_RED_BIAS, 1);
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_glPixelTransferf(GL_GREEN_BIAS, 1);
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_glPixelTransferf(GL_BLUE_BIAS, 1);
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_glTexImage2D(GL_TEXTURE_2D, 0, 4, _Font->m_TexWidth, _Font->m_TexHeight, 0, GL_ALPHA, GL_UNSIGNED_BYTE, _Font->m_TexBytes);
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_glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
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_glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
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_glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,GL_NEAREST);
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_glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_NEAREST);
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_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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_glBindTexture(GL_TEXTURE_2D, 0);
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_glPixelTransferf(GL_ALPHA_BIAS, 0);
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_glPixelTransferf(GL_RED_BIAS, 0);
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_glPixelTransferf(GL_GREEN_BIAS, 0);
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_glPixelTransferf(GL_BLUE_BIAS, 0);
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return TexID;
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}
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static void UnbindFont(GLuint _FontTexID)
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{
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if( _FontTexID>0 )
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_glDeleteTextures(1, &_FontTexID);
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}
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// ---------------------------------------------------------------------------
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int CTwGraphOpenGL::Init()
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{
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m_Drawing = false;
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m_FontTexID = 0;
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m_FontTex = NULL;
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m_MaxClipPlanes = -1;
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if( LoadOpenGL()==0 )
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{
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g_TwMgr->SetLastError(g_ErrCantLoadOGL);
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return 0;
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}
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// Get extensions
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_glBindBufferARB = reinterpret_cast<PFNGLBindBufferARB>(_glGetProcAddress("glBindBufferARB"));
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_glBindProgramARB = reinterpret_cast<PFNGLBindProgramARB>(_glGetProcAddress("glBindProgramARB"));
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_glGetHandleARB = reinterpret_cast<PFNGLGetHandleARB>(_glGetProcAddress("glGetHandleARB"));
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_glUseProgramObjectARB = reinterpret_cast<PFNGLUseProgramObjectARB>(_glGetProcAddress("glUseProgramObjectARB"));
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_glTexImage3D = reinterpret_cast<PFNGLTexImage3D>(_glGetProcAddress("glTexImage3D"));
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_glActiveTextureARB = reinterpret_cast<PFNGLActiveTextureARB>(_glGetProcAddress("glActiveTextureARB"));
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_glClientActiveTextureARB = reinterpret_cast<PFNGLClientActiveTextureARB>(_glGetProcAddress("glClientActiveTextureARB"));
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_glBlendEquation = reinterpret_cast<PFNGLBlendEquation>(_glGetProcAddress("glBlendEquation"));
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_glBlendEquationSeparate = reinterpret_cast<PFNGLBlendEquationSeparate>(_glGetProcAddress("glBlendEquationSeparate"));
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_glBlendFuncSeparate = reinterpret_cast<PFNGLBlendFuncSeparate>(_glGetProcAddress("glBlendFuncSeparate"));
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_glBindVertexArray = reinterpret_cast<PFNGLBindVertexArray>(_glGetProcAddress("glBindVertexArray"));
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_glEnableVertexAttribArray = reinterpret_cast<PFNGLEnableVertexAttribArray>(_glGetProcAddress("glEnableVertexAttribArray"));
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_glDisableVertexAttribArray = reinterpret_cast<PFNGLDisableVertexAttribArray>(_glGetProcAddress("glDisableVertexAttribArray"));
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_glGetVertexAttribiv = reinterpret_cast<PFNGLGetVertexAttribiv>(_glGetProcAddress("glGetVertexAttribiv"));
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m_SupportTexRect = false; // updated in BeginDraw
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return 1;
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}
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// ---------------------------------------------------------------------------
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int CTwGraphOpenGL::Shut()
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{
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assert(m_Drawing==false);
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UnbindFont(m_FontTexID);
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int Res = 1;
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if( UnloadOpenGL()==0 )
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{
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g_TwMgr->SetLastError(g_ErrCantUnloadOGL);
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Res = 0;
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}
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return Res;
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}
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// ---------------------------------------------------------------------------
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void CTwGraphOpenGL::BeginDraw(int _WndWidth, int _WndHeight)
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{
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assert(m_Drawing==false && _WndWidth>0 && _WndHeight>0);
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m_Drawing = true;
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m_WndWidth = _WndWidth;
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m_WndHeight = _WndHeight;
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CHECK_GL_ERROR;
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//#if !defined(ANT_OSX)
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static bool s_SupportTexRectChecked = false;
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if (!s_SupportTexRectChecked)
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{
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const char *ext = (const char *)_glGetString(GL_EXTENSIONS);
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if( ext!=0 && strlen(ext)>0 )
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m_SupportTexRect = (strstr(ext, "GL_ARB_texture_rectangle")!=NULL);
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s_SupportTexRectChecked = true;
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}
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//#endif
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_glPushAttrib(GL_ALL_ATTRIB_BITS);
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_glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS);
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if( _glActiveTextureARB )
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{
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_glGetIntegerv(GL_ACTIVE_TEXTURE_ARB, &m_PrevActiveTextureARB);
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_glGetIntegerv(GL_CLIENT_ACTIVE_TEXTURE_ARB, &m_PrevClientActiveTextureARB);
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GLint maxTexUnits = 1;
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_glGetIntegerv(GL_MAX_TEXTURE_COORDS, &maxTexUnits); // was GL_MAX_TEXTURE_UNITS_ARB
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if( maxTexUnits<1 )
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maxTexUnits = 1;
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else if( maxTexUnits > MAX_TEXTURES )
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maxTexUnits = MAX_TEXTURES;
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GLint i;
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for( i=0; i<maxTexUnits; ++i )
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{
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_glActiveTextureARB(GL_TEXTURE0_ARB+i);
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m_PrevActiveTexture1D[i] = _glIsEnabled(GL_TEXTURE_1D);
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m_PrevActiveTexture2D[i] = _glIsEnabled(GL_TEXTURE_2D);
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m_PrevActiveTexture3D[i] = _glIsEnabled(GL_TEXTURE_3D);
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_glDisable(GL_TEXTURE_1D);
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_glDisable(GL_TEXTURE_2D);
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_glDisable(GL_TEXTURE_3D);
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}
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_glActiveTextureARB(GL_TEXTURE0_ARB);
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for( i=0; i<maxTexUnits; i++ )
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{
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_glClientActiveTextureARB(GL_TEXTURE0_ARB+i);
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m_PrevClientTexCoordArray[i] = _glIsEnabled(GL_TEXTURE_COORD_ARRAY);
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_glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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}
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_glClientActiveTextureARB(GL_TEXTURE0_ARB);
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}
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_glMatrixMode(GL_TEXTURE);
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_glPushMatrix();
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_glLoadIdentity();
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_glMatrixMode(GL_MODELVIEW);
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_glPushMatrix();
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_glLoadIdentity();
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_glMatrixMode(GL_PROJECTION);
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_glPushMatrix();
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GLint Vp[4];
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_glGetIntegerv(GL_VIEWPORT, Vp);
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/*
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if( _WndWidth>0 && _WndHeight>0 )
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{
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Vp[0] = 0;
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Vp[1] = 0;
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Vp[2] = _WndWidth;
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Vp[3] = _WndHeight;
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_glViewport(Vp[0], Vp[1], Vp[2], Vp[3]);
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}
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_glLoadIdentity();
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//_glOrtho(Vp[0], Vp[0]+Vp[2]-1, Vp[1]+Vp[3]-1, Vp[1], -1, 1); // Doesn't work
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_glOrtho(Vp[0], Vp[0]+Vp[2], Vp[1]+Vp[3], Vp[1], -1, 1);
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*/
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if( _WndWidth>0 && _WndHeight>0 )
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{
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Vp[0] = 0;
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Vp[1] = 0;
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Vp[2] = _WndWidth-1;
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Vp[3] = _WndHeight-1;
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_glViewport(Vp[0], Vp[1], Vp[2], Vp[3]);
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}
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_glLoadIdentity();
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_glOrtho(Vp[0], Vp[0]+Vp[2], Vp[1]+Vp[3], Vp[1], -1, 1);
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_glGetIntegerv(GL_VIEWPORT, m_ViewportInit);
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_glGetFloatv(GL_PROJECTION_MATRIX, m_ProjMatrixInit);
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_glGetFloatv(GL_LINE_WIDTH, &m_PrevLineWidth);
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_glDisable(GL_POLYGON_STIPPLE);
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_glLineWidth(1);
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_glDisable(GL_LINE_SMOOTH);
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_glDisable(GL_LINE_STIPPLE);
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_glDisable(GL_CULL_FACE);
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_glDisable(GL_DEPTH_TEST);
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_glDisable(GL_LIGHTING);
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_glEnable(GL_BLEND);
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_glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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_glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &m_PrevTexEnv);
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_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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_glGetIntegerv(GL_POLYGON_MODE, m_PrevPolygonMode);
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_glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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_glDisable(GL_ALPHA_TEST);
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//_glEnable(GL_ALPHA_TEST);
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//_glAlphaFunc(GL_GREATER, 0);
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_glDisable(GL_FOG);
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_glDisable(GL_LOGIC_OP);
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_glDisable(GL_SCISSOR_TEST);
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if( m_MaxClipPlanes<0 )
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{
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_glGetIntegerv(GL_MAX_CLIP_PLANES, &m_MaxClipPlanes);
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if( m_MaxClipPlanes<0 || m_MaxClipPlanes>255 )
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m_MaxClipPlanes = 6;
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}
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for( GLint i=0; i<m_MaxClipPlanes; ++i )
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_glDisable(GL_CLIP_PLANE0+i);
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m_PrevTexture = 0;
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_glGetIntegerv(GL_TEXTURE_BINDING_2D, &m_PrevTexture);
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_glDisableClientState(GL_VERTEX_ARRAY);
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_glDisableClientState(GL_NORMAL_ARRAY);
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_glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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_glDisableClientState(GL_INDEX_ARRAY);
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_glDisableClientState(GL_COLOR_ARRAY);
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_glDisableClientState(GL_EDGE_FLAG_ARRAY);
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if( _glBindVertexArray!=NULL )
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{
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m_PrevVertexArray = 0;
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_glGetIntegerv(GL_VERTEX_ARRAY_BINDING, (GLint*)&m_PrevVertexArray);
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_glBindVertexArray(0);
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}
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if( _glBindBufferARB!=NULL )
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{
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m_PrevArrayBufferARB = m_PrevElementArrayBufferARB = 0;
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_glGetIntegerv(GL_ARRAY_BUFFER_BINDING_ARB, &m_PrevArrayBufferARB);
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_glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, &m_PrevElementArrayBufferARB);
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_glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
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_glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
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}
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if( _glBindProgramARB!=NULL )
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{
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m_PrevVertexProgramARB = _glIsEnabled(GL_VERTEX_PROGRAM_ARB);
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m_PrevFragmentProgramARB = _glIsEnabled(GL_FRAGMENT_PROGRAM_ARB);
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_glDisable(GL_VERTEX_PROGRAM_ARB);
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_glDisable(GL_FRAGMENT_PROGRAM_ARB);
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}
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if( _glGetHandleARB!=NULL && _glUseProgramObjectARB!=NULL )
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{
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m_PrevProgramObjectARB = _glGetHandleARB(GL_PROGRAM_OBJECT_ARB);
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_glUseProgramObjectARB(0);
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}
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_glDisable(GL_TEXTURE_1D);
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_glDisable(GL_TEXTURE_2D);
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if( _glTexImage3D!=NULL )
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{
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m_PrevTexture3D = _glIsEnabled(GL_TEXTURE_3D);
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_glDisable(GL_TEXTURE_3D);
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}
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if( m_SupportTexRect )
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{
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m_PrevTexRectARB = _glIsEnabled(GL_TEXTURE_RECTANGLE_ARB);
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_glDisable(GL_TEXTURE_RECTANGLE_ARB);
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}
|
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if( _glBlendEquationSeparate!=NULL )
|
|
{
|
|
_glGetIntegerv(GL_BLEND_EQUATION_RGB, &m_PrevBlendEquationRGB);
|
|
_glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &m_PrevBlendEquationAlpha);
|
|
_glBlendEquationSeparate(GL_FUNC_ADD, GL_FUNC_ADD);
|
|
}
|
|
if( _glBlendFuncSeparate!=NULL )
|
|
{
|
|
_glGetIntegerv(GL_BLEND_SRC_RGB, &m_PrevBlendSrcRGB);
|
|
_glGetIntegerv(GL_BLEND_DST_RGB, &m_PrevBlendDstRGB);
|
|
_glGetIntegerv(GL_BLEND_SRC_ALPHA, &m_PrevBlendSrcAlpha);
|
|
_glGetIntegerv(GL_BLEND_DST_ALPHA, &m_PrevBlendDstAlpha);
|
|
_glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
}
|
|
if( _glBlendEquation!=NULL )
|
|
{
|
|
_glGetIntegerv(GL_BLEND_EQUATION, &m_PrevBlendEquation);
|
|
_glBlendEquation(GL_FUNC_ADD);
|
|
}
|
|
if( _glDisableVertexAttribArray!=NULL )
|
|
{
|
|
GLint maxVertexAttribs;
|
|
_glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxVertexAttribs);
|
|
if(maxVertexAttribs>MAX_VERTEX_ATTRIBS)
|
|
maxVertexAttribs=MAX_VERTEX_ATTRIBS;
|
|
|
|
for(int i=0; i<maxVertexAttribs; i++)
|
|
{
|
|
_glGetVertexAttribiv(i, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &m_PrevEnabledVertexAttrib[i]);
|
|
_glDisableVertexAttribArray(i);
|
|
}
|
|
}
|
|
|
|
CHECK_GL_ERROR;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::EndDraw()
|
|
{
|
|
assert(m_Drawing==true);
|
|
m_Drawing = false;
|
|
|
|
_glBindTexture(GL_TEXTURE_2D, m_PrevTexture);
|
|
if( _glBindVertexArray!=NULL )
|
|
_glBindVertexArray(m_PrevVertexArray);
|
|
if( _glBindBufferARB!=NULL )
|
|
{
|
|
_glBindBufferARB(GL_ARRAY_BUFFER_ARB, m_PrevArrayBufferARB);
|
|
_glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, m_PrevElementArrayBufferARB);
|
|
}
|
|
if( _glBindProgramARB!=NULL )
|
|
{
|
|
if( m_PrevVertexProgramARB )
|
|
_glEnable(GL_VERTEX_PROGRAM_ARB);
|
|
if( m_PrevFragmentProgramARB )
|
|
_glEnable(GL_FRAGMENT_PROGRAM_ARB);
|
|
}
|
|
if( _glGetHandleARB!=NULL && _glUseProgramObjectARB!=NULL )
|
|
_glUseProgramObjectARB(m_PrevProgramObjectARB);
|
|
if( _glTexImage3D!=NULL && m_PrevTexture3D )
|
|
_glEnable(GL_TEXTURE_3D);
|
|
if( m_SupportTexRect && m_PrevTexRectARB )
|
|
_glEnable(GL_TEXTURE_RECTANGLE_ARB);
|
|
if( _glBlendEquation!=NULL )
|
|
_glBlendEquation(m_PrevBlendEquation);
|
|
if( _glBlendEquationSeparate!=NULL )
|
|
_glBlendEquationSeparate(m_PrevBlendEquationRGB, m_PrevBlendEquationAlpha);
|
|
if( _glBlendFuncSeparate!=NULL )
|
|
_glBlendFuncSeparate(m_PrevBlendSrcRGB, m_PrevBlendDstRGB, m_PrevBlendSrcAlpha, m_PrevBlendDstAlpha);
|
|
|
|
_glPolygonMode(GL_FRONT, m_PrevPolygonMode[0]);
|
|
_glPolygonMode(GL_BACK, m_PrevPolygonMode[1]);
|
|
_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, m_PrevTexEnv);
|
|
_glLineWidth(m_PrevLineWidth);
|
|
_glMatrixMode(GL_PROJECTION);
|
|
_glPopMatrix();
|
|
_glMatrixMode(GL_MODELVIEW);
|
|
_glPopMatrix();
|
|
_glMatrixMode(GL_TEXTURE);
|
|
_glPopMatrix();
|
|
_glPopClientAttrib();
|
|
_glPopAttrib();
|
|
|
|
if( _glActiveTextureARB )
|
|
{
|
|
GLint maxTexUnits = 1;
|
|
_glGetIntegerv(GL_MAX_TEXTURE_COORDS, &maxTexUnits); // was GL_MAX_TEXTURE_UNITS_ARB
|
|
if( maxTexUnits<1 )
|
|
maxTexUnits = 1;
|
|
else if( maxTexUnits > MAX_TEXTURES )
|
|
maxTexUnits = MAX_TEXTURES;
|
|
GLint i;
|
|
for( i=0; i<maxTexUnits; ++i )
|
|
{
|
|
_glActiveTextureARB(GL_TEXTURE0_ARB+i);
|
|
if( m_PrevActiveTexture1D[i] )
|
|
_glEnable(GL_TEXTURE_1D);
|
|
if( m_PrevActiveTexture2D[i] )
|
|
_glEnable(GL_TEXTURE_2D);
|
|
if( m_PrevActiveTexture3D[i] )
|
|
_glEnable(GL_TEXTURE_3D);
|
|
}
|
|
_glActiveTextureARB(m_PrevActiveTextureARB);
|
|
|
|
for( i=0; i<maxTexUnits; ++i )
|
|
{
|
|
_glClientActiveTextureARB(GL_TEXTURE0_ARB+i);
|
|
if( m_PrevClientTexCoordArray[i] )
|
|
_glEnableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
}
|
|
_glClientActiveTextureARB(m_PrevClientActiveTextureARB);
|
|
}
|
|
if(_glEnableVertexAttribArray)
|
|
{
|
|
GLint maxVertexAttribs;
|
|
_glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxVertexAttribs);
|
|
if(maxVertexAttribs>MAX_VERTEX_ATTRIBS)
|
|
maxVertexAttribs=MAX_VERTEX_ATTRIBS;
|
|
|
|
for(int i=0; i<maxVertexAttribs; i++)
|
|
{
|
|
if(m_PrevEnabledVertexAttrib[i]!=0)
|
|
_glEnableVertexAttribArray(i);
|
|
}
|
|
}
|
|
|
|
CHECK_GL_ERROR;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
bool CTwGraphOpenGL::IsDrawing()
|
|
{
|
|
return m_Drawing;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::Restore()
|
|
{
|
|
UnbindFont(m_FontTexID);
|
|
m_FontTexID = 0;
|
|
m_FontTex = NULL;
|
|
}
|
|
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::DrawLine(int _X0, int _Y0, int _X1, int _Y1, color32 _Color0, color32 _Color1, bool _AntiAliased)
|
|
{
|
|
assert(m_Drawing==true);
|
|
/*
|
|
// border adjustment NO!!
|
|
if(_X0<_X1)
|
|
++_X1;
|
|
else if(_X0>_X1)
|
|
++_X0;
|
|
if(_Y0<_Y1)
|
|
++_Y1;
|
|
else if(_Y0>_Y1)
|
|
++_Y0;
|
|
*/
|
|
//const GLfloat dx = +0.0f;
|
|
const GLfloat dx = +0.5f;
|
|
//GLfloat dy = -0.2f;
|
|
const GLfloat dy = -0.5f;
|
|
if( _AntiAliased )
|
|
_glEnable(GL_LINE_SMOOTH);
|
|
else
|
|
_glDisable(GL_LINE_SMOOTH);
|
|
_glDisable(GL_TEXTURE_2D);
|
|
_glMatrixMode(GL_MODELVIEW);
|
|
_glLoadIdentity();
|
|
_glBegin(GL_LINES);
|
|
_glColor4ub(GLubyte(_Color0>>16), GLubyte(_Color0>>8), GLubyte(_Color0), GLubyte(_Color0>>24));
|
|
_glVertex2f((GLfloat)_X0+dx, (GLfloat)_Y0+dy);
|
|
_glColor4ub(GLubyte(_Color1>>16), GLubyte(_Color1>>8), GLubyte(_Color1), GLubyte(_Color1>>24));
|
|
_glVertex2f((GLfloat)_X1+dx, (GLfloat)_Y1+dy);
|
|
//_glVertex2i(_X0, _Y0);
|
|
//_glVertex2i(_X1, _Y1);
|
|
_glEnd();
|
|
_glDisable(GL_LINE_SMOOTH);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::DrawRect(int _X0, int _Y0, int _X1, int _Y1, color32 _Color00, color32 _Color10, color32 _Color01, color32 _Color11)
|
|
{
|
|
assert(m_Drawing==true);
|
|
|
|
/*
|
|
// border adjustment
|
|
if(_X0<_X1)
|
|
++_X1;
|
|
else if(_X0>_X1)
|
|
++_X0;
|
|
if(_Y0<_Y1)
|
|
++_Y1;
|
|
else if(_Y0>_Y1)
|
|
++_Y0;
|
|
*/
|
|
// border adjustment
|
|
if(_X0<_X1)
|
|
++_X1;
|
|
else if(_X0>_X1)
|
|
++_X0;
|
|
if(_Y0<_Y1)
|
|
--_Y0;
|
|
else if(_Y0>_Y1)
|
|
--_Y1;
|
|
const GLfloat dx = +0.0f;
|
|
const GLfloat dy = +0.0f;
|
|
|
|
_glDisable(GL_TEXTURE_2D);
|
|
_glMatrixMode(GL_MODELVIEW);
|
|
_glLoadIdentity();
|
|
//GLubyte r = GLubyte(_Color>>16);
|
|
//GLubyte g = GLubyte(_Color>>8);
|
|
//GLubyte b = GLubyte(_Color);
|
|
//GLubyte a = GLubyte(_Color>>24);
|
|
//_glColor4ub(GLubyte(_Color>>16), GLubyte(_Color>>8), GLubyte(_Color), GLubyte(_Color>>24));
|
|
//_glColor4ub(r, g, b, a);
|
|
_glBegin(GL_QUADS);
|
|
_glColor4ub(GLubyte(_Color00>>16), GLubyte(_Color00>>8), GLubyte(_Color00), GLubyte(_Color00>>24));
|
|
_glVertex2f((GLfloat)_X0+dx, (GLfloat)_Y0+dy);
|
|
_glColor4ub(GLubyte(_Color10>>16), GLubyte(_Color10>>8), GLubyte(_Color10), GLubyte(_Color10>>24));
|
|
_glVertex2f((GLfloat)_X1+dx, (GLfloat)_Y0+dy);
|
|
_glColor4ub(GLubyte(_Color11>>16), GLubyte(_Color11>>8), GLubyte(_Color11), GLubyte(_Color11>>24));
|
|
_glVertex2f((GLfloat)_X1+dx, (GLfloat)_Y1+dy);
|
|
_glColor4ub(GLubyte(_Color01>>16), GLubyte(_Color01>>8), GLubyte(_Color01), GLubyte(_Color01>>24));
|
|
_glVertex2f((GLfloat)_X0+dx, (GLfloat)_Y1+dy);
|
|
_glEnd();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void *CTwGraphOpenGL::NewTextObj()
|
|
{
|
|
return new CTextObj;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::DeleteTextObj(void *_TextObj)
|
|
{
|
|
assert(_TextObj!=NULL);
|
|
delete static_cast<CTextObj *>(_TextObj);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::BuildText(void *_TextObj, const std::string *_TextLines, color32 *_LineColors, color32 *_LineBgColors, int _NbLines, const CTexFont *_Font, int _Sep, int _BgWidth)
|
|
{
|
|
assert(m_Drawing==true);
|
|
assert(_TextObj!=NULL);
|
|
assert(_Font!=NULL);
|
|
|
|
if( _Font != m_FontTex )
|
|
{
|
|
UnbindFont(m_FontTexID);
|
|
m_FontTexID = BindFont(_Font);
|
|
m_FontTex = _Font;
|
|
}
|
|
CTextObj *TextObj = static_cast<CTextObj *>(_TextObj);
|
|
TextObj->m_TextVerts.resize(0);
|
|
TextObj->m_TextUVs.resize(0);
|
|
TextObj->m_BgVerts.resize(0);
|
|
TextObj->m_Colors.resize(0);
|
|
TextObj->m_BgColors.resize(0);
|
|
|
|
int x, x1, y, y1, i, Len;
|
|
unsigned char ch;
|
|
const unsigned char *Text;
|
|
color32 LineColor = COLOR32_RED;
|
|
for( int Line=0; Line<_NbLines; ++Line )
|
|
{
|
|
x = 0;
|
|
y = Line * (_Font->m_CharHeight+_Sep);
|
|
y1 = y+_Font->m_CharHeight;
|
|
Len = (int)_TextLines[Line].length();
|
|
Text = (const unsigned char *)(_TextLines[Line].c_str());
|
|
if( _LineColors!=NULL )
|
|
LineColor = (_LineColors[Line]&0xff00ff00) | GLubyte(_LineColors[Line]>>16) | (GLubyte(_LineColors[Line])<<16);
|
|
|
|
for( i=0; i<Len; ++i )
|
|
{
|
|
ch = Text[i];
|
|
x1 = x + _Font->m_CharWidth[ch];
|
|
_Font->m_CharHeight;
|
|
|
|
TextObj->m_TextVerts.push_back(Vec2(x , y ));
|
|
TextObj->m_TextVerts.push_back(Vec2(x1, y ));
|
|
TextObj->m_TextVerts.push_back(Vec2(x , y1));
|
|
TextObj->m_TextVerts.push_back(Vec2(x1, y ));
|
|
TextObj->m_TextVerts.push_back(Vec2(x1, y1));
|
|
TextObj->m_TextVerts.push_back(Vec2(x , y1));
|
|
|
|
TextObj->m_TextUVs.push_back(Vec2(_Font->m_CharU0[ch], _Font->m_CharV0[ch]));
|
|
TextObj->m_TextUVs.push_back(Vec2(_Font->m_CharU1[ch], _Font->m_CharV0[ch]));
|
|
TextObj->m_TextUVs.push_back(Vec2(_Font->m_CharU0[ch], _Font->m_CharV1[ch]));
|
|
TextObj->m_TextUVs.push_back(Vec2(_Font->m_CharU1[ch], _Font->m_CharV0[ch]));
|
|
TextObj->m_TextUVs.push_back(Vec2(_Font->m_CharU1[ch], _Font->m_CharV1[ch]));
|
|
TextObj->m_TextUVs.push_back(Vec2(_Font->m_CharU0[ch], _Font->m_CharV1[ch]));
|
|
|
|
if( _LineColors!=NULL )
|
|
{
|
|
TextObj->m_Colors.push_back(LineColor);
|
|
TextObj->m_Colors.push_back(LineColor);
|
|
TextObj->m_Colors.push_back(LineColor);
|
|
TextObj->m_Colors.push_back(LineColor);
|
|
TextObj->m_Colors.push_back(LineColor);
|
|
TextObj->m_Colors.push_back(LineColor);
|
|
}
|
|
|
|
x = x1;
|
|
}
|
|
if( _BgWidth>0 )
|
|
{
|
|
TextObj->m_BgVerts.push_back(Vec2(-1 , y ));
|
|
TextObj->m_BgVerts.push_back(Vec2(_BgWidth+1, y ));
|
|
TextObj->m_BgVerts.push_back(Vec2(-1 , y1));
|
|
TextObj->m_BgVerts.push_back(Vec2(_BgWidth+1, y ));
|
|
TextObj->m_BgVerts.push_back(Vec2(_BgWidth+1, y1));
|
|
TextObj->m_BgVerts.push_back(Vec2(-1 , y1));
|
|
|
|
if( _LineBgColors!=NULL )
|
|
{
|
|
color32 LineBgColor = (_LineBgColors[Line]&0xff00ff00) | GLubyte(_LineBgColors[Line]>>16) | (GLubyte(_LineBgColors[Line])<<16);
|
|
TextObj->m_BgColors.push_back(LineBgColor);
|
|
TextObj->m_BgColors.push_back(LineBgColor);
|
|
TextObj->m_BgColors.push_back(LineBgColor);
|
|
TextObj->m_BgColors.push_back(LineBgColor);
|
|
TextObj->m_BgColors.push_back(LineBgColor);
|
|
TextObj->m_BgColors.push_back(LineBgColor);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::DrawText(void *_TextObj, int _X, int _Y, color32 _Color, color32 _BgColor)
|
|
{
|
|
assert(m_Drawing==true);
|
|
assert(_TextObj!=NULL);
|
|
CTextObj *TextObj = static_cast<CTextObj *>(_TextObj);
|
|
|
|
if( TextObj->m_TextVerts.size()<4 && TextObj->m_BgVerts.size()<4 )
|
|
return; // nothing to draw
|
|
|
|
_glMatrixMode(GL_MODELVIEW);
|
|
_glLoadIdentity();
|
|
_glTranslatef((GLfloat)_X, (GLfloat)_Y, 0);
|
|
_glEnableClientState(GL_VERTEX_ARRAY);
|
|
if( (_BgColor!=0 || TextObj->m_BgColors.size()==TextObj->m_BgVerts.size()) && TextObj->m_BgVerts.size()>=4 )
|
|
{
|
|
_glDisable(GL_TEXTURE_2D);
|
|
_glVertexPointer(2, GL_FLOAT, 0, &(TextObj->m_BgVerts[0]));
|
|
if( TextObj->m_BgColors.size()==TextObj->m_BgVerts.size() && _BgColor==0 )
|
|
{
|
|
_glEnableClientState(GL_COLOR_ARRAY);
|
|
_glColorPointer(4, GL_UNSIGNED_BYTE, 0, &(TextObj->m_BgColors[0]));
|
|
}
|
|
else
|
|
{
|
|
_glDisableClientState(GL_COLOR_ARRAY);
|
|
_glColor4ub(GLubyte(_BgColor>>16), GLubyte(_BgColor>>8), GLubyte(_BgColor), GLubyte(_BgColor>>24));
|
|
}
|
|
_glDrawArrays(GL_TRIANGLES, 0, (int)TextObj->m_BgVerts.size());
|
|
}
|
|
_glEnable(GL_TEXTURE_2D);
|
|
_glBindTexture(GL_TEXTURE_2D, m_FontTexID);
|
|
_glEnableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
if( TextObj->m_TextVerts.size()>=4 )
|
|
{
|
|
_glVertexPointer(2, GL_FLOAT, 0, &(TextObj->m_TextVerts[0]));
|
|
_glTexCoordPointer(2, GL_FLOAT, 0, &(TextObj->m_TextUVs[0]));
|
|
if( TextObj->m_Colors.size()==TextObj->m_TextVerts.size() && _Color==0 )
|
|
{
|
|
_glEnableClientState(GL_COLOR_ARRAY);
|
|
_glColorPointer(4, GL_UNSIGNED_BYTE, 0, &(TextObj->m_Colors[0]));
|
|
}
|
|
else
|
|
{
|
|
_glDisableClientState(GL_COLOR_ARRAY);
|
|
_glColor4ub(GLubyte(_Color>>16), GLubyte(_Color>>8), GLubyte(_Color), GLubyte(_Color>>24));
|
|
}
|
|
|
|
_glDrawArrays(GL_TRIANGLES, 0, (int)TextObj->m_TextVerts.size());
|
|
}
|
|
|
|
_glDisableClientState(GL_VERTEX_ARRAY);
|
|
_glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
_glDisableClientState(GL_COLOR_ARRAY);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::ChangeViewport(int _X0, int _Y0, int _Width, int _Height, int _OffsetX, int _OffsetY)
|
|
{
|
|
if( _Width>0 && _Height>0 )
|
|
{
|
|
GLint vp[4];
|
|
vp[0] = _X0;
|
|
vp[1] = _Y0;
|
|
vp[2] = _Width-1;
|
|
vp[3] = _Height-1;
|
|
_glViewport(vp[0], m_WndHeight-vp[1]-vp[3], vp[2], vp[3]);
|
|
|
|
GLint matrixMode = 0;
|
|
_glGetIntegerv(GL_MATRIX_MODE, &matrixMode);
|
|
_glMatrixMode(GL_PROJECTION);
|
|
_glLoadIdentity();
|
|
_glOrtho(_OffsetX, _OffsetX+vp[2], vp[3]-_OffsetY, -_OffsetY, -1, 1);
|
|
_glMatrixMode(matrixMode);
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::RestoreViewport()
|
|
{
|
|
_glViewport(m_ViewportInit[0], m_ViewportInit[1], m_ViewportInit[2], m_ViewportInit[3]);
|
|
|
|
GLint matrixMode = 0;
|
|
_glGetIntegerv(GL_MATRIX_MODE, &matrixMode);
|
|
_glMatrixMode(GL_PROJECTION);
|
|
_glLoadMatrixf(m_ProjMatrixInit);
|
|
_glMatrixMode(matrixMode);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::SetScissor(int _X0, int _Y0, int _Width, int _Height)
|
|
{
|
|
if( _Width>0 && _Height>0 )
|
|
{
|
|
_glScissor(_X0-1, m_WndHeight-_Y0-_Height, _Width-1, _Height);
|
|
_glEnable(GL_SCISSOR_TEST);
|
|
}
|
|
else
|
|
_glDisable(GL_SCISSOR_TEST);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void CTwGraphOpenGL::DrawTriangles(int _NumTriangles, int *_Vertices, color32 *_Colors, Cull _CullMode)
|
|
{
|
|
assert(m_Drawing==true);
|
|
|
|
const GLfloat dx = +0.0f;
|
|
const GLfloat dy = +0.0f;
|
|
|
|
GLint prevCullFaceMode, prevFrontFace;
|
|
_glGetIntegerv(GL_CULL_FACE_MODE, &prevCullFaceMode);
|
|
_glGetIntegerv(GL_FRONT_FACE, &prevFrontFace);
|
|
GLboolean prevCullEnable = _glIsEnabled(GL_CULL_FACE);
|
|
_glCullFace(GL_BACK);
|
|
_glEnable(GL_CULL_FACE);
|
|
if( _CullMode==CULL_CW )
|
|
_glFrontFace(GL_CCW);
|
|
else if( _CullMode==CULL_CCW )
|
|
_glFrontFace(GL_CW);
|
|
else
|
|
_glDisable(GL_CULL_FACE);
|
|
|
|
_glDisable(GL_TEXTURE_2D);
|
|
_glMatrixMode(GL_MODELVIEW);
|
|
_glLoadIdentity();
|
|
_glBegin(GL_TRIANGLES);
|
|
for(int i=0; i<3*_NumTriangles; ++i)
|
|
{
|
|
color32 col = _Colors[i];
|
|
_glColor4ub(GLubyte(col>>16), GLubyte(col>>8), GLubyte(col), GLubyte(col>>24));
|
|
_glVertex2f((GLfloat)_Vertices[2*i+0]+dx, (GLfloat)_Vertices[2*i+1]+dy);
|
|
}
|
|
_glEnd();
|
|
|
|
_glCullFace(prevCullFaceMode);
|
|
_glFrontFace(prevFrontFace);
|
|
if( prevCullEnable )
|
|
_glEnable(GL_CULL_FACE);
|
|
else
|
|
_glDisable(GL_CULL_FACE);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|