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[WIP/feat] glClearTexImage() #17

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[WIP/feat] glClearTexImage() #17

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d74b25a
Feat[clear]: implement glClearTexImage
whitebelyash Feb 15, 2026
b2f656a
Feat[egl]: expose GL_ARB_clear_texture
whitebelyash Feb 15, 2026
0c5a75f
Fix[of_buffer_copier]: remove debug printf
whitebelyash Feb 15, 2026
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1 change: 1 addition & 0 deletions ltw/src/main/tinywrapper/egl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -122,6 +122,7 @@ void build_extension_string(context_t* context) {
// Required by Iris. Indexed variants are available since ES3.2 or with OES/EXT_draw_buffers_indexed extensions
if(context->blending.available)
add_extra_extension(context, &length, "GL_ARB_draw_buffers_blend");
add_extra_extension(context, &length, "GL_ARB_clear_texture");
// Used by Minecraft for the GPU usage counter (see Blaze3D TimerQuery)
add_extra_extension(context, &length, "GL_ARB_timer_query");
// More extensions are possible, but will need way more wraps and tracking.
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14 changes: 14 additions & 0 deletions ltw/src/main/tinywrapper/of_buffer_copier.c
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Expand Up @@ -169,5 +169,19 @@ void glCopyTexSubImage2D(GLenum target,
texture_blit_framebuffer(target, level, xoffset, yoffset, x, y, width, height, true);
}
}
}

void glClearTexImage(GLuint texture,
GLint level,
GLenum format,
GLenum type,
const void * data) {
if(!current_context) return;
framebuffer_copier_t* copier = &current_context->framebuffer_copier;
if(!copier->ready) return;

es3_functions.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, copier->tempfb);
es3_functions.glFramebufferTexture2D(copier->tempfb, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, level);
es3_functions.glClearBufferiv(GL_COLOR, GL_COLOR_ATTACHMENT0, data);
es3_functions.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
}