diff options
Diffstat (limited to 'src/mesa/main/glformats.c')
| -rw-r--r-- | src/mesa/main/glformats.c | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c index 8c20f7759d9..4fe0ae07810 100644 --- a/src/mesa/main/glformats.c +++ b/src/mesa/main/glformats.c @@ -960,3 +960,370 @@ _mesa_base_format_has_channel(GLenum base_format, GLenum pname) return GL_FALSE; } + + +/** + * Do error checking of format/type combinations for glReadPixels, + * glDrawPixels and glTex[Sub]Image. Note that depending on the format + * and type values, we may either generate GL_INVALID_OPERATION or + * GL_INVALID_ENUM. + * + * \param format pixel format. + * \param type pixel type. + * + * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR + */ +GLenum +_mesa_error_check_format_and_type(const struct gl_context *ctx, + GLenum format, GLenum type) +{ + /* special type-based checks (see glReadPixels, glDrawPixels error lists) */ + switch (type) { + case GL_BITMAP: + if (format != GL_COLOR_INDEX && format != GL_STENCIL_INDEX) { + return GL_INVALID_ENUM; + } + break; + + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + if (format == GL_RGB) { + break; /* OK */ + } + if (format == GL_RGB_INTEGER_EXT && + ctx->Extensions.ARB_texture_rgb10_a2ui) { + break; /* OK */ + } + return GL_INVALID_OPERATION; + + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_UNSIGNED_INT_10_10_10_2: + case GL_UNSIGNED_INT_2_10_10_10_REV: + if (format == GL_RGBA || + format == GL_BGRA || + format == GL_ABGR_EXT) { + break; /* OK */ + } + if ((format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) && + ctx->Extensions.ARB_texture_rgb10_a2ui) { + break; /* OK */ + } + return GL_INVALID_OPERATION; + + case GL_UNSIGNED_INT_24_8: + if (!ctx->Extensions.EXT_packed_depth_stencil) { + return GL_INVALID_ENUM; + } + if (format != GL_DEPTH_STENCIL) { + return GL_INVALID_OPERATION; + } + return GL_NO_ERROR; + + case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: + if (!ctx->Extensions.ARB_depth_buffer_float) { + return GL_INVALID_ENUM; + } + if (format != GL_DEPTH_STENCIL) { + return GL_INVALID_OPERATION; + } + return GL_NO_ERROR; + + case GL_UNSIGNED_INT_10F_11F_11F_REV: + if (!ctx->Extensions.EXT_packed_float) { + return GL_INVALID_ENUM; + } + if (format != GL_RGB) { + return GL_INVALID_OPERATION; + } + return GL_NO_ERROR; + + default: + ; /* fall-through */ + } + + /* now, for each format, check the type for compatibility */ + switch (format) { + case GL_COLOR_INDEX: + case GL_STENCIL_INDEX: + switch (type) { + case GL_BITMAP: + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_RED: + case GL_GREEN: + case GL_BLUE: + case GL_ALPHA: +#if 0 /* not legal! see table 3.6 of the 1.5 spec */ + case GL_INTENSITY: +#endif + case GL_LUMINANCE: + case GL_LUMINANCE_ALPHA: + case GL_DEPTH_COMPONENT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_RG: + if (!ctx->Extensions.ARB_texture_rg) + return GL_INVALID_ENUM; + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_RGB: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + return GL_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + case GL_UNSIGNED_INT_5_9_9_9_REV: + return ctx->Extensions.EXT_texture_shared_exponent + ? GL_NO_ERROR : GL_INVALID_ENUM; + case GL_UNSIGNED_INT_10F_11F_11F_REV: + return ctx->Extensions.EXT_packed_float + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_BGR: + switch (type) { + /* NOTE: no packed types are supported with BGR. That's + * intentional, according to the GL spec. + */ + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_RGBA: + case GL_BGRA: + case GL_ABGR_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_UNSIGNED_INT_10_10_10_2: + case GL_UNSIGNED_INT_2_10_10_10_REV: + return GL_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_YCBCR_MESA: + if (!ctx->Extensions.MESA_ycbcr_texture) + return GL_INVALID_ENUM; + if (type == GL_UNSIGNED_SHORT_8_8_MESA || + type == GL_UNSIGNED_SHORT_8_8_REV_MESA) + return GL_NO_ERROR; + else + return GL_INVALID_OPERATION; + + case GL_DEPTH_STENCIL_EXT: + if (ctx->Extensions.EXT_packed_depth_stencil && + type == GL_UNSIGNED_INT_24_8) + return GL_NO_ERROR; + else if (ctx->Extensions.ARB_depth_buffer_float && + type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV) + return GL_NO_ERROR; + else + return GL_INVALID_ENUM; + + case GL_DUDV_ATI: + case GL_DU8DV8_ATI: + if (!ctx->Extensions.ATI_envmap_bumpmap) + return GL_INVALID_ENUM; + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_NO_ERROR; + default: + return GL_INVALID_ENUM; + } + + /* integer-valued formats */ + case GL_RED_INTEGER_EXT: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA_INTEGER_EXT: + case GL_RG_INTEGER: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + return (ctx->VersionMajor >= 3 || + ctx->Extensions.EXT_texture_integer) + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_RGB_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + return (ctx->VersionMajor >= 3 || + ctx->Extensions.EXT_texture_integer) + ? GL_NO_ERROR : GL_INVALID_ENUM; + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + return ctx->Extensions.ARB_texture_rgb10_a2ui + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_BGR_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + /* NOTE: no packed formats w/ BGR format */ + return (ctx->VersionMajor >= 3 || + ctx->Extensions.EXT_texture_integer) + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_RGBA_INTEGER_EXT: + case GL_BGRA_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + return (ctx->VersionMajor >= 3 || + ctx->Extensions.EXT_texture_integer) + ? GL_NO_ERROR : GL_INVALID_ENUM; + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_UNSIGNED_INT_10_10_10_2: + case GL_UNSIGNED_INT_2_10_10_10_REV: + return ctx->Extensions.ARB_texture_rgb10_a2ui + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_LUMINANCE_INTEGER_EXT: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + return ctx->Extensions.EXT_texture_integer + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + default: + return GL_INVALID_ENUM; + } + return GL_NO_ERROR; +} |