mirror of
https://github.com/bulletphysics/bullet3
synced 2024-12-14 13:50:04 +00:00
0da584a42d
using the 'NO_OPENGL3' preprocessor definition both premake/cmake has support for this now needs some testing
325 lines
9.0 KiB
C++
325 lines
9.0 KiB
C++
#ifndef NO_OPENGL3
|
|
#include "GLPrimitiveRenderer.h"
|
|
#include "GLPrimInternalData.h"
|
|
|
|
#include "LoadShader.h"
|
|
|
|
#include <assert.h>
|
|
|
|
static const char* vertexShader3D= \
|
|
"#version 150 \n"
|
|
"\n"
|
|
"uniform mat4 viewMatrix, projMatrix;\n"
|
|
"in vec4 position;\n"
|
|
"in vec4 colour;\n"
|
|
"out vec4 colourV;\n"
|
|
"\n"
|
|
"in vec2 texuv;\n"
|
|
"out vec2 texuvV;\n"
|
|
"\n"
|
|
"\n"
|
|
"void main (void)\n"
|
|
"{\n"
|
|
" colourV = colour;\n"
|
|
" gl_Position = projMatrix * viewMatrix * position ;\n"
|
|
" texuvV=texuv;\n"
|
|
"}\n";
|
|
|
|
static const char* fragmentShader3D= \
|
|
"#version 150\n"
|
|
"\n"
|
|
"uniform vec2 p;\n"
|
|
"in vec4 colourV;\n"
|
|
"out vec4 fragColour;\n"
|
|
"in vec2 texuvV;\n"
|
|
"\n"
|
|
"uniform sampler2D Diffuse;\n"
|
|
"\n"
|
|
"void main(void)\n"
|
|
"{\n"
|
|
" vec4 texcolor = texture(Diffuse,texuvV);\n"
|
|
" if (p.x==0.f)\n"
|
|
" {\n"
|
|
" texcolor = vec4(1,1,1,texcolor.x);\n"
|
|
" }\n"
|
|
" fragColour = colourV*texcolor;\n"
|
|
"}\n";
|
|
|
|
|
|
|
|
static unsigned int s_indexData[6] = {0,1,2,0,2,3};
|
|
|
|
|
|
|
|
|
|
|
|
GLPrimitiveRenderer::GLPrimitiveRenderer(int screenWidth, int screenHeight)
|
|
:m_screenWidth(screenWidth),
|
|
m_screenHeight(screenHeight)
|
|
{
|
|
|
|
m_data = new PrimInternalData;
|
|
|
|
m_data->m_shaderProg = gltLoadShaderPair(vertexShader3D,fragmentShader3D);
|
|
|
|
m_data->m_viewmatUniform = glGetUniformLocation(m_data->m_shaderProg,"viewMatrix");
|
|
if (m_data->m_viewmatUniform < 0) {
|
|
assert(0);
|
|
}
|
|
m_data->m_projMatUniform = glGetUniformLocation(m_data->m_shaderProg,"projMatrix");
|
|
if (m_data->m_projMatUniform < 0) {
|
|
assert(0);
|
|
}
|
|
m_data->m_positionUniform = glGetUniformLocation(m_data->m_shaderProg, "p");
|
|
if (m_data->m_positionUniform < 0) {
|
|
assert(0);
|
|
}
|
|
m_data->m_colourAttribute = glGetAttribLocation(m_data->m_shaderProg, "colour");
|
|
if (m_data->m_colourAttribute < 0) {
|
|
assert(0);
|
|
}
|
|
m_data->m_positionAttribute = glGetAttribLocation(m_data->m_shaderProg, "position");
|
|
if (m_data->m_positionAttribute < 0) {
|
|
assert(0);
|
|
}
|
|
m_data->m_textureAttribute = glGetAttribLocation(m_data->m_shaderProg,"texuv");
|
|
if (m_data->m_textureAttribute < 0) {
|
|
assert(0);
|
|
}
|
|
|
|
loadBufferData();
|
|
|
|
}
|
|
|
|
void GLPrimitiveRenderer::loadBufferData()
|
|
{
|
|
|
|
PrimVertex vertexData[4] = {
|
|
{ PrimVec4(-1, -1, 0.0, 1.0 ), PrimVec4( 1.0, 0.0, 0.0, 1.0 ) ,PrimVec2(0,0)},
|
|
{ PrimVec4(-1, 1, 0.0, 1.0 ), PrimVec4( 0.0, 1.0, 0.0, 1.0 ) ,PrimVec2(0,1)},
|
|
{ PrimVec4( 1, 1, 0.0, 1.0 ), PrimVec4( 0.0, 0.0, 1.0, 1.0 ) ,PrimVec2(1,1)},
|
|
{ PrimVec4( 1, -1, 0.0, 1.0 ), PrimVec4( 1.0, 1.0, 1.0, 1.0 ) ,PrimVec2(1,0)}
|
|
};
|
|
|
|
|
|
glGenVertexArrays(1, &m_data->m_vertexArrayObject);
|
|
glBindVertexArray(m_data->m_vertexArrayObject);
|
|
|
|
glGenBuffers(1, &m_data->m_vertexBuffer);
|
|
glBindBuffer(GL_ARRAY_BUFFER, m_data->m_vertexBuffer);
|
|
glBufferData(GL_ARRAY_BUFFER, 4 * sizeof(PrimVertex), vertexData, GL_DYNAMIC_DRAW);
|
|
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
|
|
|
|
glGenBuffers(1, &m_data->m_indexBuffer);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_data->m_indexBuffer);
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER,6*sizeof(int), s_indexData,GL_STATIC_DRAW);
|
|
|
|
glEnableVertexAttribArray(m_data->m_positionAttribute);
|
|
glEnableVertexAttribArray(m_data->m_colourAttribute);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glEnableVertexAttribArray(m_data->m_textureAttribute);
|
|
|
|
glVertexAttribPointer(m_data->m_positionAttribute, 4, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)0);
|
|
glVertexAttribPointer(m_data->m_colourAttribute , 4, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)sizeof(PrimVec4));
|
|
glVertexAttribPointer(m_data->m_textureAttribute , 2, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)(sizeof(PrimVec4)+sizeof(PrimVec4)));
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
glActiveTexture(GL_TEXTURE0);
|
|
|
|
GLubyte* image=new GLubyte[256*256*3];
|
|
for(int y=0;y<256;++y)
|
|
{
|
|
// const int t=y>>5;
|
|
GLubyte* pi=image+y*256*3;
|
|
for(int x=0;x<256;++x)
|
|
{
|
|
if (x<y)//x<2||y<2||x>253||y>253)
|
|
{
|
|
pi[0]=255;
|
|
pi[1]=0;
|
|
pi[2]=0;
|
|
} else
|
|
|
|
{
|
|
pi[0]=255;
|
|
pi[1]=255;
|
|
pi[2]=255;
|
|
}
|
|
|
|
pi+=3;
|
|
}
|
|
}
|
|
|
|
glGenTextures(1,(GLuint*)&m_data->m_texturehandle);
|
|
glBindTexture(GL_TEXTURE_2D,m_data->m_texturehandle);
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 256,256,0,GL_RGB,GL_UNSIGNED_BYTE,image);
|
|
glGenerateMipmap(GL_TEXTURE_2D);
|
|
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
delete[] image;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
GLPrimitiveRenderer::~GLPrimitiveRenderer()
|
|
{
|
|
glBindTexture(GL_TEXTURE_2D,0);
|
|
glUseProgram(0);
|
|
glBindTexture(GL_TEXTURE_2D,0);
|
|
glDeleteProgram(m_data->m_shaderProg);
|
|
delete m_data;
|
|
}
|
|
|
|
void GLPrimitiveRenderer::drawLine()
|
|
{
|
|
|
|
}
|
|
|
|
void GLPrimitiveRenderer::drawRect(float x0, float y0, float x1, float y1, float color[4])
|
|
{
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
glActiveTexture(GL_TEXTURE0);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glBindTexture(GL_TEXTURE_2D,m_data->m_texturehandle);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
drawTexturedRect(x0,y0,x1,y1,color,0,0,1,1);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
}
|
|
|
|
|
|
void GLPrimitiveRenderer::drawTexturedRect3D(const PrimVertex& v0,const PrimVertex& v1,const PrimVertex& v2,const PrimVertex& v3,float viewMat[16],float projMat[16], bool useRGBA)
|
|
{
|
|
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
|
|
glUseProgram(m_data->m_shaderProg);
|
|
|
|
glUniformMatrix4fv(m_data->m_viewmatUniform, 1, false, viewMat);
|
|
glUniformMatrix4fv(m_data->m_projMatUniform, 1, false, projMat);
|
|
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, m_data->m_vertexBuffer);
|
|
glBindVertexArray(m_data->m_vertexArrayObject);
|
|
|
|
bool useFiltering = false;
|
|
if (useFiltering)
|
|
{
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
} else
|
|
{
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
}
|
|
|
|
PrimVertex vertexData[4] = {
|
|
v0,v1,v2,v3
|
|
};
|
|
|
|
glBufferSubData(GL_ARRAY_BUFFER, 0,4 * sizeof(PrimVertex), vertexData);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
PrimVec2 p( 0.f,0.f);//?b?0.5f * sinf(timeValue), 0.5f * cosf(timeValue) );
|
|
if (useRGBA)
|
|
{
|
|
p.p[0] = 1.f;
|
|
p.p[1] = 1.f;
|
|
}
|
|
|
|
glUniform2fv(m_data->m_positionUniform, 1, (const GLfloat *)&p);
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
|
|
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glEnableVertexAttribArray(m_data->m_positionAttribute);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glEnableVertexAttribArray(m_data->m_colourAttribute);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glEnableVertexAttribArray(m_data->m_textureAttribute);
|
|
|
|
glVertexAttribPointer(m_data->m_positionAttribute, 4, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)0);
|
|
glVertexAttribPointer(m_data->m_colourAttribute , 4, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)sizeof(PrimVec4));
|
|
glVertexAttribPointer(m_data->m_textureAttribute , 2, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)(sizeof(PrimVec4)+sizeof(PrimVec4)));
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_data->m_indexBuffer);
|
|
|
|
//glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
|
|
int indexCount = 6;
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
|
|
glDrawElements(GL_TRIANGLES, indexCount, GL_UNSIGNED_INT, 0);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
|
|
glBindVertexArray(0);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
//glDisableVertexAttribArray(m_data->m_textureAttribute);
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
glUseProgram(0);
|
|
|
|
assert(glGetError()==GL_NO_ERROR);
|
|
|
|
}
|
|
|
|
|
|
void GLPrimitiveRenderer::drawTexturedRect(float x0, float y0, float x1, float y1, float color[4], float u0,float v0, float u1, float v1, int useRGBA)
|
|
{
|
|
float identity[16]={1,0,0,0,
|
|
0,1,0,0,
|
|
0,0,1,0,
|
|
0,0,0,1};
|
|
PrimVertex vertexData[4] = {
|
|
{ PrimVec4(-1.f+2.f*x0/float(m_screenWidth), 1.f-2.f*y0/float(m_screenHeight), 0.f, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u0,v0)},
|
|
{ PrimVec4(-1.f+2.f*x0/float(m_screenWidth), 1.f-2.f*y1/float(m_screenHeight), 0.f, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u0,v1)},
|
|
{ PrimVec4( -1.f+2.f*x1/float(m_screenWidth), 1.f-2.f*y1/float(m_screenHeight), 0.f, 1.f ), PrimVec4(color[0], color[1], color[2], color[3]) ,PrimVec2(u1,v1)},
|
|
{ PrimVec4( -1.f+2.f*x1/float(m_screenWidth), 1.f-2.f*y0/float(m_screenHeight), 0.f, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u1,v0)}
|
|
};
|
|
|
|
drawTexturedRect3D(vertexData[0],vertexData[1],vertexData[2],vertexData[3],identity,identity,useRGBA);
|
|
}
|
|
|
|
void GLPrimitiveRenderer::setScreenSize(int width, int height)
|
|
{
|
|
m_screenWidth = width;
|
|
m_screenHeight = height;
|
|
|
|
}
|
|
#endif
|