add software rendering backend

examples/Makefile

@@ -79,6 +79,7 @@ EXAMPLE_OUTPUTS = \
 	basics/buffers \
 	basics/gl11 \
 	basics/framebuffer \
+	basics/soft \
 
 
 EXAMPLE_OUTPUTS_CUSTOM = \

examples/basics/soft.c

@@ -0,0 +1,61 @@
+#define RSGL_IMPLEMENTATION
+#include "RSGL.h"
+#include "RSGL_soft.h"
+
+#define RGFW_INT_DEFINED
+#define RGFW_IMPLEMENTATION
+#include "examples/deps/RGFW.h"
+
+int main() {
+	RGFW_window* window = RGFW_createWindow("window", 0, 0, 500, 500, RGFW_windowNoResize | RGFW_windowCenter);
+
+    u8* buffer = (u8*)RGFW_ALLOC((u32)(500 * 500 * 4));
+    RGFW_surface* surface = RGFW_createSurface(buffer, 500, 500, RGFW_formatRGBA8);
+
+	RSGL_renderer* renderer = RSGL_renderer_init(RSGL_soft_rendererProc(), NULL);
+    RSGL_renderer_viewport(renderer, RSGL_RECT(0, 0, 500, 500));
+	RSGL_renderer_updateSize(renderer, 500, 500);
+
+	RSGL_softSurface softSurface;
+	softSurface.data = buffer;
+	softSurface.width = 500;
+	softSurface.height = 500;
+
+	RSGL_renderer_setSurface(renderer, &softSurface);
+
+    RSGL_vec3D rotate = RSGL_VEC3D(0, 0, 0);
+	while (RGFW_window_shouldClose(window) == RGFW_FALSE) {
+		RGFW_pollEvents();
+
+		RSGL_renderer_clear(renderer, RSGL_RGB(10, 50, 100));
+
+        rotate.z += 1;
+
+		RSGL_renderer_setRotate(renderer, rotate);
+		RSGL_renderer_setColor(renderer, RSGL_RGB(0, 255, 0));
+		RSGL_drawPolygon(renderer, RSGL_RECT(20, 20, 50, 50), 8);
+
+		RSGL_renderer_setColor(renderer, RSGL_RGBA(255, 0, 0, 255));
+		RSGL_drawRect(renderer, RSGL_RECT(250, 300, 40, 40));
+
+		RSGL_renderer_setRotate(renderer, rotate);
+		RSGL_renderer_setColor(renderer, RSGL_RGBA(255, 0, 0, 200));
+		RSGL_drawRect(renderer, RSGL_RECT(200, 200, 200, 200));
+
+		RSGL_renderer_setRotate(renderer, rotate);
+		RSGL_renderer_setColor(renderer, RSGL_RGBA(0, 0, 255, 255));
+
+		RSGL_vec3D points[3] = {RSGL_VEC3D(0, 500, 0), RSGL_VEC3D(200, 500, 0), RSGL_VEC3D(100, 250, 0)};
+		RSGL_drawTriangle(renderer, points);
+
+		RSGL_renderer_render(renderer);
+
+        RGFW_window_blitSurface(window, surface);
+	}
+
+    RGFW_surface_free(surface);
+	RGFW_FREE(buffer);
+
+	RSGL_renderer_free(renderer);
+	RGFW_window_close(window);
+}