diff options
Diffstat (limited to 'mesalib/src/mesa/main/formatquery.c')
| -rw-r--r-- | mesalib/src/mesa/main/formatquery.c | 57 |
1 files changed, 34 insertions, 23 deletions
diff --git a/mesalib/src/mesa/main/formatquery.c b/mesalib/src/mesa/main/formatquery.c index 40eca8711..f6274fe30 100644 --- a/mesalib/src/mesa/main/formatquery.c +++ b/mesalib/src/mesa/main/formatquery.c @@ -115,29 +115,40 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname, internalformat, buffer); break; case GL_NUM_SAMPLE_COUNTS: { - /* The driver can return 0, and we should pass that along to the - * application. The ARB decided that ARB_internalformat_query should - * behave as ARB_internalformat_query2 in this situation. - * - * The ARB_internalformat_query2 spec says: - * - * "- NUM_SAMPLE_COUNTS: The number of sample counts that would be - * returned by querying SAMPLES is returned in <params>. - * * If <internalformat> is not color-renderable, - * depth-renderable, or stencil-renderable (as defined in - * section 4.4.4), or if <target> does not support multiple - * samples (ie other than TEXTURE_2D_MULTISAMPLE, - * TEXTURE_2D_MULTISAMPLE_ARRAY, or RENDERBUFFER), 0 is - * returned." - */ - const size_t num_samples = - ctx->Driver.QuerySamplesForFormat(ctx, target, internalformat, buffer); - - /* QuerySamplesForFormat writes some stuff to buffer, so we have to - * separately over-write it with the requested value. - */ - buffer[0] = (GLint) num_samples; - count = 1; + if (_mesa_is_gles3(ctx) && _mesa_is_enum_format_integer(internalformat)) { + /* From GL ES 3.0 specification, section 6.1.15 page 236: "Since + * multisampling is not supported for signed and unsigned integer + * internal formats, the value of NUM_SAMPLE_COUNTS will be zero + * for such formats. + */ + buffer[0] = 0; + count = 1; + } else { + size_t num_samples; + + /* The driver can return 0, and we should pass that along to the + * application. The ARB decided that ARB_internalformat_query should + * behave as ARB_internalformat_query2 in this situation. + * + * The ARB_internalformat_query2 spec says: + * + * "- NUM_SAMPLE_COUNTS: The number of sample counts that would be + * returned by querying SAMPLES is returned in <params>. + * * If <internalformat> is not color-renderable, + * depth-renderable, or stencil-renderable (as defined in + * section 4.4.4), or if <target> does not support multiple + * samples (ie other than TEXTURE_2D_MULTISAMPLE, + * TEXTURE_2D_MULTISAMPLE_ARRAY, or RENDERBUFFER), 0 is + * returned." + */ + num_samples = ctx->Driver.QuerySamplesForFormat(ctx, target, internalformat, buffer); + + /* QuerySamplesForFormat writes some stuff to buffer, so we have to + * separately over-write it with the requested value. + */ + buffer[0] = (GLint) num_samples; + count = 1; + } break; } default: |