void material_draw_callback(void *ptr)
{
OBJMATERIAL *objmaterial = (OBJMATERIAL *) ptr;
PROGRAM *program = objmaterial->program;
unsigned int i = 0;
while (i != program->uniform_count) {
if (!strcmp(program->uniform_array[i].name, "DIFFUSE")) {
glUniform1i(program->uniform_array[i].location, 1);
} else if (!strcmp(program->uniform_array[i].name, "MODELVIEWPROJECTIONMATRIX")) {
glUniformMatrix4fv(program->uniform_array[i].location, 1, GL_FALSE, (float *)GFX_get_modelview_projection_matrix());
} else if (!strcmp(program->uniform_array[i].name, "DISSOLVE")) {
glUniform1f(program->uniform_array[i].location, objmaterial->dissolve);
} else if (!strcmp(program->uniform_array[i].name, "AMBIENT_COLOR")) {
glUniform3fv(program->uniform_array[i].location, 1, (float *)&objmaterial->ambient);
} else if (!strcmp(program->uniform_array[i].name, "DIFFUSE_COLOR")) {
glUniform3fv(program->uniform_array[i].location, 1, (float *)&objmaterial->diffuse);
} else if (!strcmp(program->uniform_array[i].name, "SPECULAR_COLOR")) {
glUniform3fv(program->uniform_array[i].location, 1, (float *)&objmaterial->specular);
} else if (!strcmp(program->uniform_array[i].name, "SHININESS")) {
glUniform1f(program->uniform_array[i].location, objmaterial->specular_exponent * 0.128f);
} else if (!strcmp(program->uniform_array[i].name, "MODELVIEWMATRIX")) {
glUniformMatrix4fv(program->uniform_array[i].location, 1, GL_FALSE, (float *)GFX_get_modelview_matrix());
} else if (!strcmp(program->uniform_array[i].name, "PROJECTIONMATRIX")) {
glUniformMatrix4fv(program->uniform_array[i].location, 1, GL_FALSE, (float *)GFX_get_projection_matrix());
} else if (!strcmp(program->uniform_array[i].name, "NORMALMATRIX")) {
glUniformMatrix3fv(program->uniform_array[i].location, 1, GL_FALSE, (float *)GFX_get_normal_matrix());
} else if (!strcmp(program->uniform_array[i].name, "LIGHTPOSITION")) {
vec3 position = { 0.0f, -3.0f, 10.0f };
vec3 eyeposition = { 0.0f, 0.0f, 0.0f };
vec3_multiply_mat4(&eyeposition, &position, &gfx.modelview_matrix[gfx.modelview_matrix_index - 1]);
glUniform3fv(program->uniform_array[i].location, 1, (float *)&eyeposition);
}
++i;
}
}
void material_draw(void *ptr)
{
OBJMATERIAL *objmaterial = (OBJMATERIAL *) ptr;
PROGRAM *program = objmaterial->program;
unsigned int i = 0;
while (i != program->uniform_count) {
if (program->uniform_array[i].constant) {
++i;
continue;
} else if (!strcmp(program->uniform_array[i].name, "DIFFUSE")) {
glUniform1i(program->uniform_array[i].location, 1);
program->uniform_array[i].constant = 1;
} else if (!strcmp(program->uniform_array[i].name, "BUMP")) {
glUniform1i(program->uniform_array[i].location, 4);
program->uniform_array[i].constant = 1;
}
// Matrix Data
else if (!strcmp(program->uniform_array[i].name, "MODELVIEWMATRIX")) {
glUniformMatrix4fv(program->uniform_array[i].location, 1, GL_FALSE, (float *)GFX_get_modelview_matrix());
} else if (!strcmp(program->uniform_array[i].name, "PROJECTIONMATRIX")) {
glUniformMatrix4fv(program->uniform_array[i].location, 1, GL_FALSE, (float *)GFX_get_projection_matrix());
program->uniform_array[i].constant = 1;
} else if (!strcmp(program->uniform_array[i].name, "NORMALMATRIX")) {
glUniformMatrix3fv(program->uniform_array[i].location, 1, GL_FALSE, (float *)GFX_get_normal_matrix());
}
// Material Data
else if (!strcmp(program->uniform_array[i].name, "MATERIAL.ambient")) {
glUniform4fv(program->uniform_array[i].location, 1, (float *)&objmaterial->ambient);
program->uniform_array[i].constant = 1;
} else if (!strcmp(program->uniform_array[i].name, "MATERIAL.diffuse")) {
glUniform4fv(program->uniform_array[i].location, 1, (float *)&objmaterial->diffuse);
} else if (!strcmp(program->uniform_array[i].name, "MATERIAL.specular")) {
glUniform4fv(program->uniform_array[i].location, 1, (float *)&objmaterial->specular);
} else if (!strcmp(program->uniform_array[i].name, "MATERIAL.shininess")) {
glUniform1f(program->uniform_array[i].location, objmaterial->specular_exponent * 0.128f);
program->uniform_array[i].constant = 1;
}
// Lamp Data
else if (!strcmp(program->uniform_array[i].name, "LIGHT_FS.color")) {
glUniform4fv(program->uniform_array[i].location, 1, (float *)&light->color);
program->uniform_array[i].constant = 1;
} else if (!strcmp(program->uniform_array[i].name, "LIGHT_VS.direction")) {
vec3 direction;
LIGHT_get_direction_in_eye_space(light, &gfx.modelview_matrix[gfx.modelview_matrix_index - 1], &direction);
glUniform3fv(program->uniform_array[i].location, 1, (float *)&direction);
program->uniform_array[i].constant = 1;
}
++i;
}
}
void program_draw_callback( void *ptr ) {
PROGRAM *curr_program = ( PROGRAM * )ptr;
unsigned int i = 0;
while( i != curr_program->uniform_count ) {
if( !strcmp( curr_program->uniform_array[ i ].name, "MODELVIEWMATRIX" ) ) {
glUniformMatrix4fv( curr_program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_modelview_matrix() ); }
else if( !strcmp( curr_program->uniform_array[ i ].name, "PROJECTIONMATRIX" ) ) {
glUniformMatrix4fv( curr_program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_projection_matrix() ); }
else if( !strcmp( curr_program->uniform_array[ i ].name, "NORMALMATRIX" ) ) {
glUniformMatrix3fv( curr_program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_normal_matrix() ); }
else if( !strcmp( curr_program->uniform_array[ i ].name, "LIGHTPOSITION" ) ) {
// In eye space, far is Z
vec3 l = { 0.0f, 0.0f, 0.0f };
glUniform3fv( curr_program->uniform_array[ i ].location,
1,
( float * )&l ); }
++i;
}
}
void program_draw( void *ptr )
{
unsigned int i = 0;
PROGRAM *program = ( PROGRAM * )ptr;
while( i != program->uniform_count )
{
if( program->uniform_array[ i ].constant )
{
++i;
continue;
}
else if( !strcmp( program->uniform_array[ i ].name, "MODELVIEWPROJECTIONMATRIX" ) )
{
glUniformMatrix4fv( program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_modelview_projection_matrix() );
}
else if( !strcmp( program->uniform_array[ i ].name, "DIFFUSE" ) )
{
glUniform1i( program->uniform_array[ i ].location,
1 );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "BUMP" ) )
{
glUniform1i( program->uniform_array[ i ].location,
4 );
program->uniform_array[ i ].constant = 1;
}
// Matrix Data
else if( !strcmp( program->uniform_array[ i ].name, "MODELVIEWMATRIX" ) )
{
glUniformMatrix4fv( program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_modelview_matrix() );
}
else if( !strcmp( program->uniform_array[ i ].name, "PROJECTIONMATRIX" ) )
{
glUniformMatrix4fv( program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_projection_matrix() );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "NORMALMATRIX" ) )
{
glUniformMatrix3fv( program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_normal_matrix() );
}
// Material Data
else if( !strcmp( program->uniform_array[ i ].name, "MATERIAL.ambient" ) )
{
glUniform4fv( program->uniform_array[ i ].location,
1,
( float * )&objmesh->current_material->ambient );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "MATERIAL.diffuse" ) )
{
glUniform4fv( program->uniform_array[ i ].location,
1,
( float * )&objmesh->current_material->diffuse );
}
else if( !strcmp( program->uniform_array[ i ].name, "MATERIAL.specular" ) )
{
glUniform4fv( program->uniform_array[ i ].location,
1,
( float * )&objmesh->current_material->specular );
}
else if( !strcmp( program->uniform_array[ i ].name, "MATERIAL.shininess" ) )
{
glUniform1f( program->uniform_array[ i ].location,
objmesh->current_material->specular_exponent * 0.128f );
program->uniform_array[ i ].constant = 1;
}
// Lamp Data
else if( !strcmp( program->uniform_array[ i ].name, "LIGHT_FS.color" ) )
{
glUniform4fv( program->uniform_array[ i ].location,
1,
( float * )&light->color );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "LIGHT_VS.position" ) )
{
vec4 position;
static float rot_angle = 0.0f;
light->position.x = 7.5f * cosf( rot_angle * DEG_TO_RAD );
light->position.y = 7.5f * sinf( rot_angle * DEG_TO_RAD );
rot_angle += 0.25f;
LIGHT_get_position_in_eye_space( light,
&gfx.modelview_matrix[ gfx.modelview_matrix_index - 1 ],
&position );
glUniform3fv( program->uniform_array[ i ].location,
1,
( float * )&position );
}
++i;
}
}
//作为供Program结构使用的回调，每次调用Program_draw时都会自动触发该函数；
//循环检查着色器中所有的uniform变量，并获取对每个变量的控制，可将回调链接到
//一个或者多个着色器，并在统一位置处理所有的uniform变量更新
void program_draw_callback( void *ptr ) {
PROGRAM *curr_program = ( PROGRAM * )ptr;
unsigned int i = 0;
while( i != curr_program->uniform_count ) {
// 处理投影矩阵
if(!strcmp(curr_program->uniform_array[i].name, "MODELVIEWMATRIX")) {
glUniformMatrix4fv(curr_program->uniform_array[i].location, 1, GL_FALSE, (float *)GFX_get_modelview_matrix());
}
// 处理投影矩阵
else if(!strcmp(curr_program->uniform_array[i].name, "PROJECTIONMATRIX")) {
glUniformMatrix4fv(curr_program->uniform_array[i].location, 1, GL_FALSE, (float *) GFX_get_projection_matrix());
}
// 处理法线矩阵(仅包含旋转，不包括位置，所以3*3)
else if(!strcmp(curr_program->uniform_array[i].name, "NORMALMATRIX")) {
glUniformMatrix3fv(curr_program->uniform_array[i].location, 1, GL_FALSE, (float *) GFX_get_normal_matrix());
}
else if(!strcmp(curr_program->uniform_array[i].name, "LIGHTPOSITION")) {
vec3 light = {0.0f, 0.0f, 0.0f}; // 暂时设置光源位置为屏幕的中心点
glUniformMatrix3fv(curr_program->uniform_array[i].location, 1, GL_FALSE, (float *) &light);
}
++i;
}
}
void program_draw( void *ptr )
{
unsigned int i = 0;
PROGRAM *program = ( PROGRAM * )ptr;
while( i != program->uniform_count )
{
if( program->uniform_array[ i ].constant )
{
++i;
continue;
}
else if( !strcmp( program->uniform_array[ i ].name, "MODELVIEWPROJECTIONMATRIX" ) )
{
glUniformMatrix4fv( program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_modelview_projection_matrix() );
}
else if( !strcmp( program->uniform_array[ i ].name, "DIFFUSE" ) )
{
glUniform1i( program->uniform_array[ i ].location,
1 );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "BUMP" ) )
{
glUniform1i( program->uniform_array[ i ].location,
4 );
program->uniform_array[ i ].constant = 1;
}
// Matrix Data
else if( !strcmp( program->uniform_array[ i ].name, "MODELVIEWMATRIX" ) )
{
glUniformMatrix4fv( program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_modelview_matrix() );
}
else if( !strcmp( program->uniform_array[ i ].name, "PROJECTIONMATRIX" ) )
{
glUniformMatrix4fv( program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_projection_matrix() );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "NORMALMATRIX" ) )
{
glUniformMatrix3fv( program->uniform_array[ i ].location,
1,
GL_FALSE,
( float * )GFX_get_normal_matrix() );
}
// Material Data
else if( !strcmp( program->uniform_array[ i ].name, "MATERIAL.ambient" ) )
{
glUniform4fv( program->uniform_array[ i ].location,
1,
( float * )&objmesh->current_material->ambient );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "MATERIAL.diffuse" ) )
{
glUniform4fv( program->uniform_array[ i ].location,
1,
( float * )&objmesh->current_material->diffuse );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "MATERIAL.specular" ) )
{
glUniform4fv( program->uniform_array[ i ].location,
1,
( float * )&objmesh->current_material->specular );
program->uniform_array[ i ].constant = 1;
}
else if( !strcmp( program->uniform_array[ i ].name, "MATERIAL.shininess" ) )
{
glUniform1f( program->uniform_array[ i ].location,
objmesh->current_material->specular_exponent * 0.128f );
program->uniform_array[ i ].constant = 1;
}
++i;
}
char tmp[ MAX_CHAR ] = {""};
sprintf( tmp, "LAMP_FS.color" );
glUniform4fv( PROGRAM_get_uniform_location( program, tmp ),
1,
( float * )&lamp->color );
if( lamp->type == 0 )
{
vec3 direction;
sprintf( tmp, "LAMP_VS.direction" );
LAMP_get_direction_in_eye_space( lamp,
&gfx.modelview_matrix[ gfx.modelview_matrix_index - 1 ],
&direction );
glUniform3fv( PROGRAM_get_uniform_location( program, tmp ),
1,
( float * )&direction );
}
}
