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PodmogilnyjIvan
2021-12-03 03:34:31 -08:00
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320
Thirdparty/Pangolin/include/pangolin/gl/compat/gl2engine.h vendored Normal file
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/* This file is part of the Pangolin Project.
* http://github.com/stevenlovegrove/Pangolin
*
* Copyright (c) 2014 Steven Lovegrove
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#pragma once
#include <stack>
#include <pangolin/opengl_render_state.h>
#include <pangolin/glsl.h>
namespace pangolin {
class GlEngine
{
public:
const char* vert =
"attribute vec4 a_position;\n"
"attribute vec4 a_color;\n"
"attribute vec3 a_normal;\n"
"attribute vec2 a_texcoord;\n"
"uniform vec4 u_color;\n"
"uniform mat4 u_modelViewMatrix;\n"
"uniform mat4 u_modelViewProjectionMatrix;\n"
"varying vec4 v_frontColor;\n"
"varying vec2 v_texcoord;\n"
"void main() {\n"
" gl_Position = u_modelViewProjectionMatrix * a_position;\n"
" v_frontColor = u_color;\n"
" v_texcoord = a_texcoord;\n"
"}\n";
const char* frag =
#ifdef HAVE_GLES_2
"precision mediump float;\n"
#endif // HAVE_GLES_2
"varying vec4 v_frontColor;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D u_texture;\n"
"uniform bool u_textureEnable;\n"
"void main() {\n"
" gl_FragColor = v_frontColor;\n"
" if(u_textureEnable) {\n"
" gl_FragColor *= texture2D(u_texture, v_texcoord);\n"
" }\n"
"}\n";
GlEngine()
{
// Initialise default state
projection.push(IdentityMatrix());
modelview.push(IdentityMatrix());
currentmatrix = &modelview;
// Set GL_TEXTURE0 as default active texture
glActiveTexture(GL_TEXTURE0);
// Compile and link shaders
prog_fixed.AddShader(GlSlVertexShader, vert);
prog_fixed.AddShader(GlSlFragmentShader, frag);
prog_fixed.BindPangolinDefaultAttribLocationsAndLink();
// Save locations of uniforms
u_color = prog_fixed.GetUniformHandle("u_color");
u_modelViewMatrix = prog_fixed.GetUniformHandle("u_modelViewMatrix");
u_modelViewProjectionMatrix = prog_fixed.GetUniformHandle("u_modelViewProjectionMatrix");
u_texture = prog_fixed.GetUniformHandle("u_texture");
u_textureEnable = prog_fixed.GetUniformHandle("u_textureEnable");
// Initialise default uniform values
UpdateMatrices();
SetColor(1.0,1.0,1.0,1.0);
}
void UpdateMatrices()
{
OpenGlMatrix pmv = projection.top() * modelview.top();
prog_fixed.SaveBind();
glUniformMatrix4fv( u_modelViewMatrix, 1, false, modelview.top().m );
glUniformMatrix4fv( u_modelViewProjectionMatrix, 1, false, pmv.m );
prog_fixed.Unbind();
}
void SetColor(float r, float g, float b, float a)
{
prog_fixed.SaveBind();
glUniform4f( u_color, r, g, b, a);
prog_fixed.Unbind();
}
void EnableTexturing(GLboolean v)
{
prog_fixed.SaveBind();
glUniform1i( u_textureEnable, v);
prog_fixed.Unbind();
}
//protected:
std::stack<OpenGlMatrix> projection;
std::stack<OpenGlMatrix> modelview;
std::stack<OpenGlMatrix>* currentmatrix;
GLenum matrixmode;
float color[4];
GlSlProgram prog_fixed;
GLint u_color;
GLint u_modelViewMatrix;
GLint u_modelViewProjectionMatrix;
GLint u_texture;
GLint u_textureEnable;
};
GlEngine& glEngine();
}
///////////////////////////////////////////////////////////////////////////////
// OpenGL 1.0 compatibility - Emulate fixed pipeline
///////////////////////////////////////////////////////////////////////////////
// Missing defines that we'll be using
#define GL_MODELVIEW 0x1700
#define GL_PROJECTION 0x1701
#define GL_SHADE_MODEL 0x0B54
#define GL_POINT_SIZE 0x0B11
#define GL_MULTISAMPLE 0x809D
#define GL_LIGHTING 0x0B50
#define GL_POINT_SMOOTH 0x0B10
#define GL_LINE_SMOOTH 0x0B20
#define GL_SCISSOR_TEST 0x0C11
#define GL_COLOR_MATERIAL 0x0B57
#define GL_FLAT 0x1D00
#define GL_SMOOTH 0x1D01
#define GL_MODULATE 0x2100
#define GL_DECAL 0x2101
#define GL_ADD 0x0104
#define GL_TEXTURE_ENV_MODE 0x2200
#define GL_TEXTURE_ENV_COLOR 0x2201
#define GL_TEXTURE_ENV 0x2300
#define GL_PERSPECTIVE_CORRECTION_HINT 0x0C50
#define GL_POINT_SMOOTH_HINT 0x0C51
#define GL_LINE_SMOOTH_HINT 0x0C52
#define GL_VERTEX_ARRAY 0x8074
#define GL_NORMAL_ARRAY 0x8075
#define GL_COLOR_ARRAY 0x8076
#define GL_TEXTURE_COORD_ARRAY 0x8078
inline void glEnableClientState(GLenum cap)
{
pangolin::GlEngine& gl = pangolin::glEngine();
if(cap == GL_VERTEX_ARRAY) {
glEnableVertexAttribArray(pangolin::DEFAULT_LOCATION_POSITION);
}else if(cap == GL_COLOR_ARRAY) {
glEnableVertexAttribArray(pangolin::DEFAULT_LOCATION_COLOUR);
}else if(cap == GL_NORMAL_ARRAY) {
glEnableVertexAttribArray(pangolin::DEFAULT_LOCATION_NORMAL);
}else if(cap == GL_TEXTURE_COORD_ARRAY) {
glEnableVertexAttribArray(pangolin::DEFAULT_LOCATION_TEXCOORD);
gl.EnableTexturing(true);
}else{
pango_print_error("Not Implemented: %s, %s, %d", __FUNCTION__, __FILE__, __LINE__);
}
}
inline void glDisableClientState(GLenum cap)
{
pangolin::GlEngine& gl = pangolin::glEngine();
if(cap == GL_VERTEX_ARRAY) {
glDisableVertexAttribArray(pangolin::DEFAULT_LOCATION_POSITION);
}else if(cap == GL_COLOR_ARRAY) {
glDisableVertexAttribArray(pangolin::DEFAULT_LOCATION_COLOUR);
}else if(cap == GL_NORMAL_ARRAY) {
glDisableVertexAttribArray(pangolin::DEFAULT_LOCATION_NORMAL);
}else if(cap == GL_TEXTURE_COORD_ARRAY) {
glDisableVertexAttribArray(pangolin::DEFAULT_LOCATION_TEXCOORD);
gl.EnableTexturing(false);
}else{
pango_print_error("Not Implemented: %s, %s, %d", __FUNCTION__, __FILE__, __LINE__);
}
}
inline void glVertexPointer( GLint size, GLenum type, GLsizei stride, const GLvoid * pointer)
{
glVertexAttribPointer(pangolin::DEFAULT_LOCATION_POSITION, size, type, GL_FALSE, stride, pointer);
}
inline void glTexCoordPointer( GLint size, GLenum type, GLsizei stride, const GLvoid * pointer)
{
glVertexAttribPointer(pangolin::DEFAULT_LOCATION_TEXCOORD, size, type, GL_FALSE, stride, pointer);
}
inline void glMatrixMode(GLenum mode)
{
pangolin::GlEngine& gl = pangolin::glEngine();
gl.currentmatrix = (mode == pangolin::GlProjectionStack) ? &gl.projection : &gl.modelview;
}
inline void glLoadIdentity()
{
pangolin::GlEngine& gl = pangolin::glEngine();
gl.currentmatrix->top() = pangolin::IdentityMatrix();
gl.UpdateMatrices();
}
inline void glLoadMatrixf(const GLfloat* m)
{
pangolin::GlEngine& gl = pangolin::glEngine();
pangolin::GLprecision* cm = gl.currentmatrix->top().m;
for(int i=0; i<16; ++i) cm[i] = (pangolin::GLprecision)m[i];
gl.UpdateMatrices();
}
inline void glLoadMatrixd(const GLdouble* m)
{
pangolin::GlEngine& gl = pangolin::glEngine();
pangolin::GLprecision* cm = gl.currentmatrix->top().m;
for(int i=0; i<16; ++i) cm[i] = (pangolin::GLprecision)m[i];
gl.UpdateMatrices();
}
inline void glMultMatrixf(const GLfloat* m)
{
// pangolin::GlEngine& gl = pangolin::glEngine();
// float res[16];
// pangolin::MatMul<4,4,4,float>(res, m, gl.currentmatrix->m );
// std::memcpy(gl.currentmatrix->m, res, sizeof(float) * 16 );
pango_print_error("Not Implemented: %s, %s, %d", __FUNCTION__, __FILE__, __LINE__);
}
inline void glMultMatrixd(const GLdouble* m)
{
pango_print_error("Not Implemented: %s, %s, %d", __FUNCTION__, __FILE__, __LINE__);
}
inline void glPushMatrix(void)
{
pangolin::GlEngine& gl = pangolin::glEngine();
gl.currentmatrix->push(gl.currentmatrix->top());
}
inline void glPopMatrix(void)
{
pangolin::GlEngine& gl = pangolin::glEngine();
gl.currentmatrix->pop();
gl.UpdateMatrices();
}
inline void glTranslatef(GLfloat x, GLfloat y, GLfloat z )
{
pangolin::GlEngine& gl = pangolin::glEngine();
pangolin::GLprecision* cm = gl.currentmatrix->top().m;
cm[12] += x;
cm[13] += y;
cm[14] += z;
gl.UpdateMatrices();
}
inline void glOrtho(
GLdouble l, GLdouble r,
GLdouble b, GLdouble t,
GLdouble n, GLdouble f)
{
pangolin::GlEngine& gl = pangolin::glEngine();
gl.currentmatrix->top() = pangolin::ProjectionMatrixOrthographic(l,r,b,t,n,f);
gl.UpdateMatrices();
}
inline void glColor4f( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha)
{
pangolin::glEngine().SetColor(red,green,blue,alpha);
}
inline void glShadeModel( GLenum mode)
{
pango_print_error("Not Implemented: %s, %s, %d", __FUNCTION__, __FILE__, __LINE__);
}
inline void glPointSize(GLfloat size)
{
pango_print_error("Not Implemented: %s, %s, %d", __FUNCTION__, __FILE__, __LINE__);
}
inline void glTexEnvf( GLenum target,
GLenum pname,
GLfloat param)
{
pango_print_error("Not Implemented: %s, %s, %d", __FUNCTION__, __FILE__, __LINE__);
}

60
Thirdparty/Pangolin/include/pangolin/gl/compat/gl_es_compat.h vendored Normal file
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#pragma once
#include <pangolin/platform.h>
#define GLdouble GLfloat
#define glClearDepth glClearDepthf
#define glFrustum glFrustumf
#define glColor4fv(a) glColor4f(a[0], a[1], a[2], a[3])
#define glColor3fv(a) glColor4f(a[0], a[1], a[2], 1.0f)
#define glColor3f(a,b,c) glColor4f(a, b, c, 1.0f)
#define GL_CLAMP GL_CLAMP_TO_EDGE
#ifdef HAVE_GLES_2
#define glGenFramebuffersEXT glGenFramebuffers
#define glDeleteFramebuffersEXT glDeleteFramebuffers
#define glBindFramebufferEXT glBindFramebuffer
#define glDrawBuffers glDrawBuffers
#define glFramebufferTexture2DEXT glFramebufferTexture2D
#define GL_FRAMEBUFFER_EXT GL_FRAMEBUFFER
#define GL_DEPTH_COMPONENT24 GL_DEPTH_COMPONENT16 // <----
#define GL_COLOR_ATTACHMENT0_EXT GL_COLOR_ATTACHMENT0
#define GL_DEPTH_ATTACHMENT_EXT GL_DEPTH_ATTACHMENT
#else
#define glOrtho glOrthof
#define glGenFramebuffersEXT glGenFramebuffersOES
#define glDeleteFramebuffersEXT glDeleteFramebuffersOES
#define glBindFramebufferEXT glBindFramebufferOES
#define glDrawBuffers glDrawBuffersOES
#define glFramebufferTexture2DEXT glFramebufferTexture2DOES
#define GL_FRAMEBUFFER_EXT GL_FRAMEBUFFER_OES
#define GL_DEPTH_COMPONENT24 GL_DEPTH_COMPONENT24_OES
#define GL_COLOR_ATTACHMENT0_EXT GL_COLOR_ATTACHMENT0_OES
#endif
#define glGetDoublev glGetFloatv
#ifdef HAVE_GLES_2
#include <pangolin/gl2engine.h>
#endif
inline void glRectf(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2)
{
GLfloat verts[] = { x1,y1, x2,y1, x2,y2, x1,y2 };
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, verts);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableClientState(GL_VERTEX_ARRAY);
}
inline void glRecti(int x1, int y1, int x2, int y2)
{
GLfloat verts[] = { (float)x1,(float)y1, (float)x2,(float)y1,
(float)x2,(float)y2, (float)x1,(float)y2 };
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, verts);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableClientState(GL_VERTEX_ARRAY);
}