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#include <GL/glew.h>
#include "solid.h"
#include "shaderloader/shaderloader.h"
#include "debuggl/debuggl.h"
#include <stdio.h>
static struct {
GLint program;
GLint u_modelview;
GLint u_projection;
GLint u_color;
} solid;
int solid_load(void)
{
debuggl_check( "pre solid_load check" );
char const * const paths_vs[] = { "mvp.vs.glsl", 0 };
char const * const paths_fs[] = { "solid.fs.glsl", 0 };
shader_program_sources const sources[] = {
{GL_VERTEX_SHADER, paths_vs},
{GL_FRAGMENT_SHADER, paths_fs},
{0,0}
};
if( solid.program ) {
debuggl_check( glDeleteProgram(solid.program) );
solid.program = 0;
}
solid.program = shader_program_load_from_files(sources);
if( !solid.program ) {
fprintf(stderr, "%s failed\n", __func__);
return -2;
}
debuggl_check( solid.u_modelview = glGetProgramResourceLocation(solid.program, GL_UNIFORM, "u_modelview") );
debuggl_check( solid.u_projection = glGetProgramResourceLocation(solid.program, GL_UNIFORM, "u_projection") );
debuggl_check( solid.u_color = glGetProgramResourceLocation(solid.program, GL_UNIFORM, "u_color") );
return 0;
}
int solid_draw(
GLenum primitive,
GLuint vao,
GLsizei count,
GLfloat const * const color,
GLfloat const * const modelview,
GLfloat const * const projection )
{
debuggl_check( (void)"pre solid_draw check" );
debuggl_check( glBindVertexArray(vao) );
debuggl_check( glUseProgram(solid.program) );
debuggl_check( glUniform4fv(solid.u_color, 1, color) );
debuggl_check( glUniformMatrix4fv(solid.u_modelview, 1, GL_FALSE, modelview) );
debuggl_check( glUniformMatrix4fv(solid.u_projection, 1, GL_FALSE, projection) );
debuggl_check( glDrawArrays(primitive, 0, count) );
debuggl_check( glUseProgram(0) );
debuggl_check( glBindVertexArray(0) );
}
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