From: Brian Paul Date: Fri, 1 Feb 2013 01:52:57 +0000 (-0700) Subject: st/mesa: don't choose DXT formats if we can't do DXT compression X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4df42890c583172b0516fb90bf905e64889c5b75;p=mesa.git st/mesa: don't choose DXT formats if we can't do DXT compression If we call gl[Copy]TexImage2D() with a generic compression format (e.g. intFormat=GL_COMPRESSED_RGBA) we can't choose a DXT format if we don't have the external DXT compression library. We weren't actually enforcing this before since the pipe_screen::is_format_supported(DXT) query has no dependency on the DXT compression library. Now if we're given a generic compressed format and we can't do DXT compression we'll fall back to a non-compressed format. v2: use util_format_is_s3tc() function and add more comments about the allow_dxt parameter. Note: This is a candidate for the stable branches. Reviewed-by: Jose Fonseca --- diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c index 9c05572d482..ec44a4359d1 100644 --- a/src/mesa/state_tracker/st_cb_drawpixels.c +++ b/src/mesa/state_tracker/st_cb_drawpixels.c @@ -1499,14 +1499,16 @@ st_CopyPixels(struct gl_context *ctx, GLint srcx, GLint srcy, if (type == GL_DEPTH) { texFormat = st_choose_format(screen, GL_DEPTH_COMPONENT, GL_NONE, GL_NONE, st->internal_target, - sample_count, PIPE_BIND_DEPTH_STENCIL); + sample_count, PIPE_BIND_DEPTH_STENCIL, + FALSE); assert(texFormat != PIPE_FORMAT_NONE); } else { /* default color format */ texFormat = st_choose_format(screen, GL_RGBA, GL_NONE, GL_NONE, st->internal_target, - sample_count, PIPE_BIND_SAMPLER_VIEW); + sample_count, PIPE_BIND_SAMPLER_VIEW, + FALSE); assert(texFormat != PIPE_FORMAT_NONE); } } diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c index 3cea2df07d9..80a440d18eb 100644 --- a/src/mesa/state_tracker/st_cb_texture.c +++ b/src/mesa/state_tracker/st_cb_texture.c @@ -597,7 +597,7 @@ decompress_with_blit(struct gl_context * ctx, /* Find the best match for the format+type combo. */ pipe_format = st_choose_format(pipe->screen, GL_RGBA8, format, type, - pipe_target, 0, bind); + pipe_target, 0, bind, FALSE); if (pipe_format == PIPE_FORMAT_NONE) { /* unable to get an rgba format!?! */ _mesa_problem(ctx, "%s: cannot find a supported format", __func__); diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c index 7ef063953c3..15fe0556de7 100644 --- a/src/mesa/state_tracker/st_format.c +++ b/src/mesa/state_tracker/st_format.c @@ -1398,18 +1398,25 @@ static const struct format_mapping format_map[] = { /** * Return first supported format from the given list. + * \param allow_dxt indicates whether it's OK to return a DXT format. */ static enum pipe_format find_supported_format(struct pipe_screen *screen, const enum pipe_format formats[], enum pipe_texture_target target, unsigned sample_count, - unsigned tex_usage) + unsigned tex_usage, + boolean allow_dxt) { uint i; for (i = 0; formats[i]; i++) { if (screen->is_format_supported(screen, formats[i], target, sample_count, tex_usage)) { + if (!allow_dxt && util_format_is_s3tc(formats[i])) { + /* we can't return a dxt format, continue searching */ + continue; + } + return formats[i]; } } @@ -1514,12 +1521,16 @@ find_exact_format(GLint internalFormat, GLenum format, GLenum type) * \param internalFormat the user value passed to glTexImage2D * \param target one of PIPE_TEXTURE_x * \param bindings bitmask of PIPE_BIND_x flags. + * \param allow_dxt indicates whether it's OK to return a DXT format. This + * only matters when internalFormat names a generic or + * specific compressed format. And that should only happen + * when we're getting called from gl[Copy]TexImage(). */ enum pipe_format st_choose_format(struct pipe_screen *screen, GLenum internalFormat, GLenum format, GLenum type, enum pipe_texture_target target, unsigned sample_count, - unsigned bindings) + unsigned bindings, boolean allow_dxt) { GET_CURRENT_CONTEXT(ctx); /* XXX this should be a function parameter */ int i, j; @@ -1547,7 +1558,8 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat, * which is supported by the driver. */ return find_supported_format(screen, mapping->pipeFormats, - target, sample_count, bindings); + target, sample_count, bindings, + allow_dxt); } } } @@ -1569,8 +1581,8 @@ st_choose_renderbuffer_format(struct pipe_screen *screen, usage = PIPE_BIND_DEPTH_STENCIL; else usage = PIPE_BIND_RENDER_TARGET; - return st_choose_format(screen, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D, - sample_count, usage); + return st_choose_format(screen, internalFormat, GL_NONE, GL_NONE, + PIPE_TEXTURE_2D, sample_count, usage, FALSE); } @@ -1597,12 +1609,13 @@ st_ChooseTextureFormat_renderable(struct gl_context *ctx, GLint internalFormat, } pFormat = st_choose_format(screen, internalFormat, format, type, - PIPE_TEXTURE_2D, 0, bindings); + PIPE_TEXTURE_2D, 0, bindings, ctx->Mesa_DXTn); if (pFormat == PIPE_FORMAT_NONE) { /* try choosing format again, this time without render target bindings */ pFormat = st_choose_format(screen, internalFormat, format, type, - PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW); + PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW, + ctx->Mesa_DXTn); } if (pFormat == PIPE_FORMAT_NONE) { @@ -1661,7 +1674,7 @@ st_QuerySamplesForFormat(struct gl_context *ctx, GLenum internalFormat, /* Set sample counts in descending order. */ for (i = 16; i > 1; i--) { format = st_choose_format(screen, internalFormat, GL_NONE, GL_NONE, - PIPE_TEXTURE_2D, i, bind); + PIPE_TEXTURE_2D, i, bind, FALSE); if (format != PIPE_FORMAT_NONE) { samples[num_sample_counts++] = i; diff --git a/src/mesa/state_tracker/st_format.h b/src/mesa/state_tracker/st_format.h index cb6e5bc9687..eac3cfb3376 100644 --- a/src/mesa/state_tracker/st_format.h +++ b/src/mesa/state_tracker/st_format.h @@ -51,7 +51,7 @@ extern enum pipe_format st_choose_format(struct pipe_screen *screen, GLenum internalFormat, GLenum format, GLenum type, enum pipe_texture_target target, unsigned sample_count, - unsigned bindings); + unsigned bindings, boolean allow_dxt); extern enum pipe_format st_choose_renderbuffer_format(struct pipe_screen *screen, diff --git a/src/mesa/state_tracker/st_texture.c b/src/mesa/state_tracker/st_texture.c index ee4d7622d27..584eaa9817a 100644 --- a/src/mesa/state_tracker/st_texture.c +++ b/src/mesa/state_tracker/st_texture.c @@ -398,7 +398,8 @@ st_create_color_map_texture(struct gl_context *ctx) /* find an RGBA texture format */ format = st_choose_format(pipe->screen, GL_RGBA, GL_NONE, GL_NONE, - PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW); + PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW, + FALSE); /* create texture for color map/table */ pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,