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vo_opengl: be explicit about IMG_RW

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Both vulkan and opengl distinguish between rendering to an image and
using an image as a storage attachment. So make this an explicit
capability instead of lumping it in with render_dst. (That way we could
support, for example, using an image as a storage attachment without
requiring a framebuffer)

The real reason for this change is that you can directly use the output
FBO as a storage attachment on vulkan but you can't on opengl, which
makes this param structly separate from render_dst.
This commit is contained in:
Niklas Haas 2017-08-26 05:33:00 +02:00
parent f40717a664
commit 45bae90f4d
3 changed files with 13 additions and 8 deletions
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2
video/out/opengl/ra.h
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@ -90,6 +90,7 @@ struct ra_tex_params {
const struct ra_format *format;
bool render_src; // must be useable as source texture in a shader
bool render_dst; // must be useable as target texture in a shader
bool storage_dst; // must be usable as a storage image (RA_VARTYPE_IMG_W)
bool blit_src; // must be usable as a blit source
bool blit_dst; // must be usable as a blit destination
bool host_mutable; // texture may be updated with tex_upload
@ -170,6 +171,7 @@ enum ra_vartype {
// ra_tex.params.render_src must be true
RA_VARTYPE_IMG_W, // C: ra_tex*, GLSL: various image types
// write-only (W) image for compute shaders
// ra_tex.params.storage_dst must be true
RA_VARTYPE_BYTE_UNORM, // C: uint8_t, GLSL: int, vec* (vertex data only)
RA_VARTYPE_BUF_RW, // C: ra_buf*, GLSL: buffer block
};

18
video/out/opengl/ra_gl.c
View File

@ -893,18 +893,20 @@ static void update_uniform(struct ra *ra, struct ra_renderpass *pass,
}
break;
}
case RA_VARTYPE_IMG_W: /* fall through */
case RA_VARTYPE_IMG_W: {
struct ra_tex *tex = *(struct ra_tex **)val->data;
struct ra_tex_gl *tex_gl = tex->priv;
assert(tex->params.storage_dst);
gl->BindImageTexture(input->binding, tex_gl->texture, 0, GL_FALSE, 0,
GL_WRITE_ONLY, tex_gl->internal_format);
break;
}
case RA_VARTYPE_TEX: {
struct ra_tex *tex = *(struct ra_tex **)val->data;
struct ra_tex_gl *tex_gl = tex->priv;
assert(tex->params.render_src);
if (input->type == RA_VARTYPE_TEX) {
gl->ActiveTexture(GL_TEXTURE0 + input->binding);
gl->BindTexture(tex_gl->target, tex_gl->texture);
} else {
gl->BindImageTexture(input->binding, tex_gl->texture, 0, GL_FALSE, 0,
GL_WRITE_ONLY, tex_gl->internal_format);
}
gl->ActiveTexture(GL_TEXTURE0 + input->binding);
gl->BindTexture(tex_gl->target, tex_gl->texture);
break;
}
case RA_VARTYPE_BUF_RW: {

1
video/out/opengl/utils.c
View File

@ -174,6 +174,7 @@ bool fbotex_change(struct fbotex *fbo, struct ra *ra, struct mp_log *log,
.src_linear = true,
.render_src = true,
.render_dst = true,
.storage_dst = true,
.blit_src = true,
};