diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/main/formatquery.c | 134 |
1 files changed, 126 insertions, 8 deletions
diff --git a/src/mesa/main/formatquery.c b/src/mesa/main/formatquery.c index d9df6db3fbd..294eaaa74ec 100644 --- a/src/mesa/main/formatquery.c +++ b/src/mesa/main/formatquery.c @@ -31,6 +31,7 @@ #include "teximage.h" #include "texparam.h" #include "texobj.h" +#include "get.h" static bool _is_renderable(struct gl_context *ctx, GLenum internalformat) @@ -594,6 +595,101 @@ _mesa_query_internal_format_default(struct gl_context *ctx, GLenum target, } } +/* + * For MAX_WIDTH/MAX_HEIGHT/MAX_DEPTH it returns the equivalent GetInteger + * pname for a Getinternalformat pname/target combination. target/pname + * combinations that would return 0 due dimension number or unsupported status + * should be already filtered out + * + * Note that this means that the returned value would be independent of the + * internalformat. This possibility is already mentioned at the Issue 7 of the + * arb_internalformat_query2 spec. + */ +static GLenum +equivalentSizePname(GLenum target, + GLenum pname) +{ + switch (target) { + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_2D_MULTISAMPLE: + return GL_MAX_TEXTURE_SIZE; + case GL_TEXTURE_3D: + return GL_MAX_3D_TEXTURE_SIZE; + case GL_TEXTURE_CUBE_MAP: + return GL_MAX_CUBE_MAP_TEXTURE_SIZE; + case GL_TEXTURE_RECTANGLE: + return GL_MAX_RECTANGLE_TEXTURE_SIZE; + case GL_RENDERBUFFER: + return GL_MAX_RENDERBUFFER_SIZE; + case GL_TEXTURE_1D_ARRAY: + if (pname == GL_MAX_HEIGHT) + return GL_MAX_ARRAY_TEXTURE_LAYERS; + else + return GL_MAX_TEXTURE_SIZE; + case GL_TEXTURE_2D_ARRAY: + case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: + if (pname == GL_MAX_DEPTH) + return GL_MAX_ARRAY_TEXTURE_LAYERS; + else + return GL_MAX_TEXTURE_SIZE; + case GL_TEXTURE_CUBE_MAP_ARRAY: + if (pname == GL_MAX_DEPTH) + return GL_MAX_ARRAY_TEXTURE_LAYERS; + else + return GL_MAX_CUBE_MAP_TEXTURE_SIZE; + case GL_TEXTURE_BUFFER: + return GL_MAX_TEXTURE_BUFFER_SIZE; + default: + return 0; + } +} + +/* + * Returns the dimensions associated to a target. GL_TEXTURE_BUFFER and + * GL_RENDERBUFFER have associated a dimension, but they are not textures + * per-se, so we can't just call _mesa_get_texture_dimension directly. + */ +static GLint +get_target_dimensions(GLenum target) +{ + switch(target) { + case GL_TEXTURE_BUFFER: + return 1; + case GL_RENDERBUFFER: + return 2; + default: + return _mesa_get_texture_dimensions(target); + } +} + +/* + * Returns the minimum amount of dimensions associated to a pname. So for + * example, if querying GL_MAX_HEIGHT, it is assumed that your target would + * have as minimum 2 dimensions. + * + * Useful to handle sentences like this from query2 spec: + * + * "MAX_HEIGHT: + * <skip> + * If the resource does not have at least two dimensions + * <skip>." + */ +static GLint +get_min_dimensions(GLenum pname) +{ + switch(pname) { + case GL_MAX_WIDTH: + return 1; + case GL_MAX_HEIGHT: + return 2; + case GL_MAX_DEPTH: + return 3; + default: + return 0; + } +} + void GLAPIENTRY _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint *params) @@ -769,20 +865,42 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname, break; } + /* For WIDTH/HEIGHT/DEPTH/LAYERS there is no reason to think that the + * returned values should be different to the values returned by + * GetInteger with MAX_TEXTURE_SIZE, MAX_3D_TEXTURE_SIZE, etc.*/ case GL_MAX_WIDTH: - /* @TODO */ - break; - case GL_MAX_HEIGHT: - /* @TODO */ - break; + case GL_MAX_DEPTH: { + GLenum get_pname; + GLint dimensions; + GLint min_dimensions; - case GL_MAX_DEPTH: - /* @TODO */ + /* From query2:MAX_HEIGHT spec (as example): + * + * "If the resource does not have at least two dimensions, or if the + * resource is unsupported, zero is returned." + */ + dimensions = get_target_dimensions(target); + min_dimensions = get_min_dimensions(pname); + if (dimensions < min_dimensions) + goto end; + + get_pname = equivalentSizePname(target, pname); + if (get_pname == 0) + goto end; + + _mesa_GetIntegerv(get_pname, buffer); break; + } case GL_MAX_LAYERS: - /* @TODO */ + if (!_mesa_has_EXT_texture_array(ctx)) + goto end; + + if (!_mesa_is_array_texture(target)) + goto end; + + _mesa_GetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, buffer); break; case GL_MAX_COMBINED_DIMENSIONS: |