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glgsg: Fix half float color buffers with GLES 3 / WebGL 2

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Part of fix for #1296
This commit is contained in:
rdb 2022-05-10 13:54:03 +02:00
parent d2fc682fd7
commit 0538106d52
1 changed files with 25 additions and 2 deletions
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27
panda/src/glstuff/glGraphicsBuffer_src.cxx
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@ -857,6 +857,26 @@ bind_slot(int layer, bool rb_resize, Texture **attach, RenderTexturePlane slot,
gl_format = GL_DEPTH_COMPONENT16;
}
break;
#ifndef OPENGLES_1
case RTP_aux_hrgba_0:
case RTP_aux_hrgba_1:
case RTP_aux_hrgba_2:
case RTP_aux_hrgba_3:
case RTP_aux_float_0:
case RTP_aux_float_1:
case RTP_aux_float_2:
case RTP_aux_float_3:
if (glgsg->has_extension("GL_EXT_color_buffer_float")) {
if (slot >= RTP_aux_float_0 && slot <= RTP_aux_float_3) {
gl_format = GL_RGBA32F;
} else {
gl_format = GL_RGBA16F;
}
}
else if (glgsg->has_extension("GL_EXT_color_buffer_half_float")) {
gl_format = GL_RGBA16F_EXT;
}
#endif
// NB: we currently use RTP_stencil to store the right eye for stereo.
// case RTP_stencil: gl_format = GL_STENCIL_INDEX8; break
default:
@ -914,9 +934,12 @@ bind_slot(int layer, bool rb_resize, Texture **attach, RenderTexturePlane slot,
}
#ifndef OPENGLES_1
} else if (_fb_properties.get_float_color() &&
_fb_properties.get_color_bits() > 16 * 3 &&
glgsg->has_extension("GL_EXT_color_buffer_float")) {
gl_format = GL_RGBA32F_EXT;
if (_fb_properties.get_color_bits() > 16 * 3) {
gl_format = GL_RGBA32F;
} else {
gl_format = GL_RGBA16F;
}
} else if (_fb_properties.get_float_color() &&
glgsg->has_extension("GL_EXT_color_buffer_half_float")) {
gl_format = GL_RGBA16F_EXT;