int main(void)
{
setlocale(LC_ALL, "Russian");
char buffer[MAX_STR_LENGTH];
init_buffer();
FILE* file;
fopen_s(&file, "prog.pas", "r");
while (!feof(file))
{
fgets(buffer, MAX_STR_LENGTH, file);
add_to_buffer(buffer);
}
fclose(file);
process_program();
getchar();
return 0;
}
// awesome raw string literals are awesome
static constexpr char template_transform_program[] { u8R"OCLRASTER_RAWSTR(
#include "oclr_global.h"
#include "oclr_math.h"
#include "oclr_matrix.h"
#include "oclr_image.h"
typedef struct __attribute__((packed, aligned(16))) {
float4 camera_position;
float4 camera_origin;
float4 camera_x_vec;
float4 camera_y_vec;
float4 camera_forward;
float4 frustum_normals[3];
uint2 viewport;
} constant_data;
//
#define discard() { return (float4)(INFINITY); }
//###OCLRASTER_USER_CODE###
//
kernel void oclraster_transform(//###OCLRASTER_USER_STRUCTS###
global float4* transformed_vertex_buffer,
constant constant_data* cdata,
const unsigned int vertex_count,
const unsigned int instance_count) {
const unsigned int global_id = get_global_id(0);
// the global work size is greater than the actual (vertex count * instance count)
// -> check for (vertex count * instance count) instead of get_global_size(0)
if(global_id >= (vertex_count * instance_count)) return;
const unsigned int vertex_id = global_id % vertex_count;
const unsigned int instance_id = global_id / vertex_count;
const unsigned int instance_vertex_id = instance_id * vertex_count + vertex_id;
//
const float3 camera_position = cdata->camera_position.xyz;
//###OCLRASTER_USER_PRE_MAIN_CALL###
const float4 user_vertex = //###OCLRASTER_USER_MAIN_CALL###
if(user_vertex.x != INFINITY) {
transformed_vertex_buffer[instance_vertex_id] = (float4)(user_vertex.xyz - camera_position, 1.0f);
// note: this is isn't the most space efficient way to do this,
// but it doesn't require any index -> triangle id mapping or
// multiple dependent memory lookups (-> faster in the end)
//###OCLRASTER_USER_OUTPUT_COPY###
}
else {
transformed_vertex_buffer[instance_vertex_id] = (float4)(INFINITY);
}
}
)OCLRASTER_RAWSTR"};
#endif
transform_program::transform_program(const string& code,
const string entry_function_,
const string build_options_,
const kernel_spec default_spec_) :
oclraster_program(code, entry_function_, "-DOCLRASTER_TRANSFORM_PROGRAM "+build_options_, default_spec_) {
kernel_function_name = "oclraster_transform";
process_program(code, default_spec_);
}
