From 90298c24a2cab088093006ef92a685d41c5a6ac2 Mon Sep 17 00:00:00 2001 From: Shashank Shekhar Date: Mon, 9 May 2022 08:07:28 +0200 Subject: EEVEE & Viewport: Add a built-in shader called 3D_IMAGE, and expose to the python API Adds an example python script to the documentation for the 3D_IMAGE shader. The **use-case** is to draw textures with 3D vertex positions, in XR views as well as non-XR views (in a simpler manner). **Testing**: I've tested that this compiles and works on my Macbook (with the example python script included in this change). I don't have access to a Windows or Linux machine right now, but this change doesn't look platform-specific and no new glsl shaders have been added or edited by this change. I'll try to get access to a Windows machine, but if someone does have one, I'd be really grateful if they could try this change. Thanks! **Problem addressed**: The existing 2D_IMAGE shader (exposed in the python API) gets near-clipped when drawn in the XR view, regardless of the near-clip settings. Additionally, the 2D_IMAGE shader only accepts 2D positions for the image vertices, which means drawing textures in 3D requires providing 2D coordinates and then pushing a transform-rotate-scale matrix to the GPU, even for non-XR (i.e. WINDOW) views. The 3D_IMAGE shader is simpler: it accepts 3D vertex positions, and doesn't require any additional work by the scripter. **Workaround**: The current workaround is to use custom shaders in the python script. **Non-intrusive change**: No new glsl shaders were added. This change just bundles two existing shaders: the vertex shader used by the 3D_IMAGE_MODULATE_ALPHA shader, and the fragment shader used by the 2D_IMAGE shader. Reviewed By: #eevee_viewport, jbakker Differential Revision: https://developer.blender.org/D14832 --- source/blender/gpu/tests/gpu_shader_builtin_test.cc | 1 + 1 file changed, 1 insertion(+) (limited to 'source/blender/gpu/tests') diff --git a/source/blender/gpu/tests/gpu_shader_builtin_test.cc b/source/blender/gpu/tests/gpu_shader_builtin_test.cc index 6ef8a032a73..5dc70a8bf0f 100644 --- a/source/blender/gpu/tests/gpu_shader_builtin_test.cc +++ b/source/blender/gpu/tests/gpu_shader_builtin_test.cc @@ -35,6 +35,7 @@ static void test_shader_builtin() test_compile_builtin_shader(GPU_SHADER_2D_UNIFORM_COLOR, GPU_SHADER_CFG_DEFAULT); test_compile_builtin_shader(GPU_SHADER_2D_FLAT_COLOR, GPU_SHADER_CFG_DEFAULT); test_compile_builtin_shader(GPU_SHADER_2D_SMOOTH_COLOR, GPU_SHADER_CFG_DEFAULT); + test_compile_builtin_shader(GPU_SHADER_3D_IMAGE, GPU_SHADER_CFG_DEFAULT); test_compile_builtin_shader(GPU_SHADER_2D_IMAGE, GPU_SHADER_CFG_DEFAULT); test_compile_builtin_shader(GPU_SHADER_2D_IMAGE_COLOR, GPU_SHADER_CFG_DEFAULT); test_compile_builtin_shader(GPU_SHADER_2D_IMAGE_DESATURATE_COLOR, GPU_SHADER_CFG_DEFAULT); -- cgit v1.2.3