diff options
author | Ton Roosendaal <ton@blender.org> | 2013-01-22 15:18:41 +0400 |
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committer | Ton Roosendaal <ton@blender.org> | 2013-01-22 15:18:41 +0400 |
commit | e11d22a6b751c750c40226cb027e7805adb7d4e4 (patch) | |
tree | c7a7afd211db440cbcbd154f76379e7685cb03fe /source/blender/gpu/shaders/gpu_shader_material.glsl | |
parent | 1e3a2931ac0cfc9af790717bf19577e22ebda4f5 (diff) |
Matcap support in 3D Viewport.
Full log is here:
http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.66/Usability#Matcap_in_3D_viewport
Implementation notes:
- Matcaps are an extension of Solid draw mode, and don't show in other drawmodes.
(It's mostly intended to aid modeling/sculpt)
- By design, Matcaps are a UI feature, and only stored locally for the UI itself, and
won't affect rendering or materials.
- Currently a set of 16 (GPL licensed) Matcaps have been compiled into Blender.
It doesn't take memory or cpu time, until you use it.
- Brush Icons and Matcaps use same code now, and only get generated/allocated on
actually using it (instead of on startup).
- The current set might get new or different images still, based on user feedback.
- Matcap images are 512x512 pixels, so each image takes 1 Mb memory. Unused matcaps get
freed immediately. The Matcap icon previews (128x128 pixels) stay in memory.
- Loading own matcap image files will be added later. That needs design and code work
to get it stable and memory-friendly.
- The GLSL code uses the ID PreviewImage for matcaps. I tested it using the existing
Material previews, which has its limits... especially for textured previews the
normal-mapped matcap won't look good.
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_material.glsl')
-rw-r--r-- | source/blender/gpu/shaders/gpu_shader_material.glsl | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_material.glsl b/source/blender/gpu/shaders/gpu_shader_material.glsl index e89be91c89a..45e7831d20d 100644 --- a/source/blender/gpu/shaders/gpu_shader_material.glsl +++ b/source/blender/gpu/shaders/gpu_shader_material.glsl @@ -2256,3 +2256,18 @@ void node_output_material(vec4 surface, vec4 volume, float displacement, out vec result = surface; } +/* ********************** matcap style render ******************** */ + +void material_preview_matcap(vec4 color, sampler2D ima, vec3 N, out vec4 result) +{ + vec2 tex; + + if (N.z < 0.0) { + N.z = 0.0; + N = normalize(N); + } + + tex.x = 0.5 + 0.49 * N.x; + tex.y = 0.5 + 0.49 * N.y; + result = texture2D(ima, tex); +} |