switch canvas to floating point rgb

1 files changed, 7 insertions, 8 deletions

diff --git a/src/spirt.c b/src/spirt.c
index f9c6420..612c36e 100644
--- a/src/spirt.c
+++ b/src/spirt.c
@@ -51,9 +51,8 @@ struct camera {
 	cl_float3 corner00;
 };
 
-static unsigned char *kernel_render(struct kernel_context *runtime,
-                                    size_t image_width, size_t image_height,
-                                    struct camera cam);
+static float *kernel_render(struct kernel_context *runtime, size_t image_width,
+                            size_t image_height, struct camera cam);
 
 static struct kernel_context kernel_context_init(size_t platidx, size_t devidx);
 static void kernel_context_clean(struct kernel_context *runtime);
@@ -63,7 +62,7 @@ static struct opts get_args(int argc, char *argv[]);
 extern const char *SPIRV_START[];
 extern const char *SPIRV_END[];
 
-static unsigned char *
+static float *
 kernel_render(struct kernel_context *const runtime, const size_t image_width,
               const size_t image_height, const struct camera cam)
 {
@@ -71,11 +70,11 @@ kernel_render(struct kernel_context *const runtime, const size_t image_width,
 
 	size_t global_item_size[2];
 
-	unsigned char *h_canvas;
+	float *h_canvas;
 	cl_mem d_canvas, d_rays;
 	size_t rays_size, canvas_size;
 
-	canvas_size = (sizeof("RGBA") - 1) * image_width * image_height;
+	canvas_size = (sizeof("RGB") - 1) * image_width * image_height;
 	rays_size = 2 * image_width * image_height;
 
 	d_rays = clCreateBuffer(runtime->context, CL_MEM_READ_WRITE,
@@ -256,7 +255,7 @@ main(int argc, char *argv[])
 	struct opts opts;
 
 	struct kernel_context runtime;
-	unsigned char *h_canvas;
+	float *h_canvas;
 	struct camera cam;
 	float focal_length, viewport_width, viewport_height;
 
@@ -299,7 +298,7 @@ main(int argc, char *argv[])
 	img.data = h_canvas;
 	img.width = opts.width;
 	img.height = opts.height;
-	img.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
+	img.format = PIXELFORMAT_UNCOMPRESSED_R32G32B32;
 	img.mipmaps = 1;
 
 	InitWindow(opts.width, opts.height, "spirt");