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Support the textureQueryLOD at #extension GL_ARB_texture_query_lod.

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Signed-off-by: ZhiqianXia <xzq0528@outlook.com>
This commit is contained in:
ZhiqianXia 2021-08-02 16:20:02 +08:00
parent 0db0010d3c
commit 78de10954e
6 changed files with 209 additions and 47 deletions
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39
Test/textureQueryLOD.frag Normal file
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#version 150
#ifdef GL_ARB_texture_query_lod
#extension GL_ARB_texture_query_lod : enable
#endif
#ifdef GL_ARB_gpu_shader5
#extension GL_ARB_gpu_shader5 : enable
#endif
#ifdef GL_ES
precision highp float;
#endif
in vec2 vUV; // vert->frag
out vec4 color; // frag->fb
#define UV vUV
#define bias 1.5
#define TEX 128.0
#define offset ivec2(1,1)
uniform highp sampler2DShadow sampler;
uniform int funct;
void main (void)
{
switch (funct)
{
case 0:
ivec2 iv2 = textureSize(sampler, 0);
#ifdef GL_ARB_texture_query_lod
vec2 fv2 = textureQueryLOD(sampler, vec2(0.0, 0.0));
#endif
color = vec4(iv2,fv2);
break;
default:
color = vec4(1.0, 1.0, 1.0, 1.0);
break;
}
}