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| author | David Thompson <dthompson2@worcester.edu> | 2020-10-04 13:00:20 -0400 |
|---|---|---|
| committer | David Thompson <dthompson2@worcester.edu> | 2020-10-04 13:00:20 -0400 |
| commit | 5ff661f1e191ce486000b727d6c979779e24efe8 (patch) | |
| tree | 4af2d900f7f3ccd2c5f9d915997ea02eff201310 | |
| parent | 85c32e4c1302a3c37a1ebb4cf7b4888affdc4f61 (diff) | |
graphics: framebuffer: Use a fully transparent clear color.
Without this it is impossible to render multiple framebuffers on top
of each other and get the desired result.
| -rw-r--r-- | chickadee/graphics/framebuffer.scm | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/chickadee/graphics/framebuffer.scm b/chickadee/graphics/framebuffer.scm index 967c115..091ab3f 100644 --- a/chickadee/graphics/framebuffer.scm +++ b/chickadee/graphics/framebuffer.scm @@ -29,6 +29,7 @@ #:use-module (gl) #:use-module (gl enums) #:use-module (chickadee math matrix) + #:use-module (chickadee graphics color) #:use-module (chickadee graphics gl) #:use-module (chickadee graphics gpu) #:use-module ((chickadee graphics texture) #:select (make-texture null-texture)) @@ -84,6 +85,8 @@ (gl-bind-framebuffer (version-3-0 framebuffer) (framebuffer-id framebuffer))) +(define %clear-color (transparency 0.0)) + (define make-framebuffer (let ((draw-buffers (u32vector (version-3-0 color-attachment0)))) (lambda* (width height #:key (min-filter 'linear) (mag-filter 'linear) @@ -103,7 +106,7 @@ dimensions WIDTH x HEIGHT." ;; rendering engine can set it whenever it changes to ;; this framebuffer, saving users the trouble of having ;; to this tedious task themselves. - (viewport (make-viewport 0 0 width height)) + (viewport (make-viewport 0 0 width height #:clear-color %clear-color)) (projection (orthographic-projection 0 width height 0 0 1)) (framebuffer (%make-framebuffer framebuffer-id renderbuffer-id |