167 lines
2.9 KiB
C
167 lines
2.9 KiB
C
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#include "block.h"
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#include "member.h"
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#include <uniform.h>
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#define GL_GLEXT_PROTOTYPES
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#include <GL/glext.h>
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#include <GL/gl.h> // GL 1.1 functions
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#include <GL/glx.h>
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#include <stdio.h>
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#include "fileSystem.h"
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#include "array.h"
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#include "char.h"
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#include "sampler2D.h"
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class uniformBlock{
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array * uniforms = new array();
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GLint buffer;
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GLuint index;
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GLint size;
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GLchar name[64];
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GLuint bindingPoint;
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float * data;
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GLint autoUpload = 0;
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createBuffer() {
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unsigned int uniformBufferSize = this->size; // allocate 152 bytes of memory
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printf("create GL_UNIFORM_BUFFER of size: %i index: %i \n", uniformBufferSize, this->index);
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this->data = ( float * ) malloc( uniformBufferSize );
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glGenBuffers( 1, &this->buffer );
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glBindBuffer( GL_UNIFORM_BUFFER, this->buffer );
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glBindBufferBase( GL_UNIFORM_BUFFER, this->index, this->buffer );
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glBufferData( GL_UNIFORM_BUFFER, uniformBufferSize, 0, GL_DYNAMIC_DRAW );
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//glBufferData( GL_UNIFORM_BUFFER, uniformBufferSize, NULL, GL_DYNAMIC_DRAW );
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}
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void upload() {
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//printf("upload uniform buffer: %f %f %f %f\n", this->data[0], this->data[1], this->data[2], this->data[3]);
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//printf("upload uniform buffer: %i\n", this->index);
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glBindBuffer( GL_UNIFORM_BUFFER, this->buffer );
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glBindBufferBase( GL_UNIFORM_BUFFER, this->bindingPoint, this->buffer );
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glBufferData( GL_UNIFORM_BUFFER, this->size, this->data, GL_DYNAMIC_DRAW );
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}
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enableAutoUpload() {
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this->autoUpload = 1;
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}
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void setUniform( char * name, void * value ) {
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int uniformCount = this->uniforms->length();
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//printf("uniformCount: %i\n\n", uniformCount);
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for (int i = 0; i < uniformCount; ++i)
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{
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uniform * currentUniform = this->uniforms->get( i );
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char * uniformName = (char *) currentUniform->name;
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if( uniformName == name ) {
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//printf("\n\n Update this uniform from uniform block %s\n\n", name);
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switch( currentUniform->type ) {
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case GL_FLOAT_VEC2:
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vector2 * vector2Value = ( vector2 * ) value;
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GLuint size = 8;
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GLint offset = currentUniform->offset;
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if( this->autoUpload ) {
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float data[2] = { vector2Value->x, vector2Value->y };
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glBindBuffer( GL_UNIFORM_BUFFER, this->buffer );
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glBindBufferBase( GL_UNIFORM_BUFFER, 0, this->buffer );
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// glBufferData( GL_UNIFORM_BUFFER, 16, data2, GL_DYNAMIC_DRAW );
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glBufferSubData( GL_UNIFORM_BUFFER, offset, size, data );
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//printf("using autoUpload %i %i %f %f\n", offset, size, data[0], data[1]);
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} else {
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GLint dataOffset = offset / sizeof( float );
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this->data[ dataOffset ] = vector2Value->x;
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this->data[ dataOffset + 1 ] = vector2Value->y;
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}
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break;
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case GL_FLOAT_VEC3:
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vector3 * vector3Value = ( vector3 * ) value;
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break;
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case GL_SAMPLER_2D:
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break;
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}
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}
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}
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}
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}
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