84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
#include "Rendering/RenderTarget.h"
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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bool render_target_init(uint32_t width, uint32_t height, render_target_t* render_target)
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{
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render_target->width = width;
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render_target->height = height;
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size_t size_of_pixel = sizeof(vec4s);
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size_t image_size = (size_t)width * height;
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size_t buffer_size = image_size * size_of_pixel;
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vec4s* buffer = (vec4s*)malloc(buffer_size);
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if (buffer == NULL)
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{
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return false;
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}
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memset(buffer, 0, buffer_size);
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for (size_t i = 0; i < image_size; i++)
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{
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buffer[i].w = 1.0;
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}
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render_target->buffer = buffer;
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return true;
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}
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vec4s render_target_get_pixel(const render_target_t* render_target, uint32_t x, uint32_t y)
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{
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if (x < render_target->width && y < render_target->height)
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{
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size_t index = (size_t)y * render_target->width + x;
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return render_target->buffer[index];
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}
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return (vec4s){0.0f, 0.0f, 0.0f, 0.0f}; // Return black if out of bounds
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}
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void render_target_set_pixel(render_target_t* render_target, uint32_t x, uint32_t y, vec4s color)
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{
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if (x < render_target->width && y < render_target->height)
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{
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size_t index = (size_t)y * render_target->width + x;
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render_target->buffer[index] = color;
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}
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}
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unsigned char* render_target_to_char(render_target_t* render_target)
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{
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size_t buffer_size = (size_t)render_target->width * render_target->height * 4; // 4 bytes for RGBA
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unsigned char* char_buffer = (unsigned char*)malloc(buffer_size);
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if (char_buffer == NULL)
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{
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return NULL;
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}
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for (uint32_t y = 0; y < render_target->height; y++)
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{
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for (uint32_t x = 0; x < render_target->width; x++)
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{
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vec4s pixel = render_target_get_pixel(render_target, x, y);
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size_t index = ((size_t)y * render_target->width + x) * 4;
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char_buffer[index + 0] = COLOR_CLAMP(pixel.x * 255.0f);
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char_buffer[index + 1] = COLOR_CLAMP(pixel.y * 255.0f);
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char_buffer[index + 2] = COLOR_CLAMP(pixel.z * 255.0f);
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char_buffer[index + 3] = COLOR_CLAMP(pixel.w * 255.0f);
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}
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}
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return char_buffer;
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}
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void render_target_free(render_target_t* target)
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{
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if (target != NULL && target->buffer != NULL)
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{
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free(target->buffer);
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}
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}
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