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GLES2: Add comments around EXT_shader_texture_lod check

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To avoid reintroducing bugs as I did in #26928 and #26932.

texture2DLodEXT and textureCubeLodEXT are only for the fragment shader with
https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_shader_texture_lod.txt
In the vertex shader, texture2DLod and textureCubeLod are built-in.
This commit is contained in:
Rémi Verschelde 2019-03-11 23:17:54 +01:00
parent 764671d2d0
commit 74e224f2c7
3 changed files with 9 additions and 18 deletions
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10
drivers/gles2/shaders/canvas.glsl
View file

@ -220,29 +220,25 @@ VERTEX_SHADER_CODE
/* clang-format off */
[fragment]
// texture2DLodEXT and textureCubeLodEXT are fragment shader specific.
// Do not copy these defines in the [vertex] section.
#ifndef USE_GLES_OVER_GL
#ifdef GL_EXT_shader_texture_lod
#extension GL_EXT_shader_texture_lod : enable
#define texture2DLod(img, coord, lod) texture2DLodEXT(img, coord, lod)
#define textureCubeLod(img, coord, lod) textureCubeLodEXT(img, coord, lod)
#endif
#endif
#endif // !USE_GLES_OVER_GL
#ifdef GL_ARB_shader_texture_lod
#extension GL_ARB_shader_texture_lod : enable
#endif
#if !defined(GL_EXT_shader_texture_lod) && !defined(GL_ARB_shader_texture_lod)
#define texture2DLod(img, coord, lod) texture2D(img, coord, lod)
#define textureCubeLod(img, coord, lod) textureCube(img, coord, lod)
#endif
#ifdef USE_GLES_OVER_GL
#define lowp
#define mediump

8
drivers/gles2/shaders/cubemap_filter.glsl
View file

@ -25,15 +25,15 @@ void main() {
/* clang-format off */
[fragment]
// texture2DLodEXT and textureCubeLodEXT are fragment shader specific.
// Do not copy these defines in the [vertex] section.
#ifndef USE_GLES_OVER_GL
#ifdef GL_EXT_shader_texture_lod
#extension GL_EXT_shader_texture_lod : enable
#define texture2DLod(img, coord, lod) texture2DLodEXT(img, coord, lod)
#define textureCubeLod(img, coord, lod) textureCubeLodEXT(img, coord, lod)
#endif
#endif
#endif // !USE_GLES_OVER_GL
#ifdef GL_ARB_shader_texture_lod
#extension GL_ARB_shader_texture_lod : enable
@ -44,8 +44,6 @@ void main() {
#define textureCubeLod(img, coord, lod) textureCube(img, coord, lod)
#endif
#ifdef USE_GLES_OVER_GL
#define lowp
#define mediump

9
drivers/gles2/shaders/scene.glsl
View file

@ -675,15 +675,15 @@ VERTEX_SHADER_CODE
/* clang-format off */
[fragment]
// texture2DLodEXT and textureCubeLodEXT are fragment shader specific.
// Do not copy these defines in the [vertex] section.
#ifndef USE_GLES_OVER_GL
#ifdef GL_EXT_shader_texture_lod
#extension GL_EXT_shader_texture_lod : enable
#define texture2DLod(img, coord, lod) texture2DLodEXT(img, coord, lod)
#define textureCubeLod(img, coord, lod) textureCubeLodEXT(img, coord, lod)
#endif
#endif
#endif // !USE_GLES_OVER_GL
#ifdef GL_ARB_shader_texture_lod
#extension GL_ARB_shader_texture_lod : enable
@ -694,9 +694,6 @@ VERTEX_SHADER_CODE
#define textureCubeLod(img, coord, lod) textureCube(img, coord, lod)
#endif
#ifdef USE_GLES_OVER_GL
#define lowp
#define mediump