+
+/**
+ * Return the simple base format for a given internal texture format.
+ * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
+ *
+ * \param ctx GL context.
+ * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
+ *
+ * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
+ * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
+ *
+ * This is the format which is used during texture application (i.e. the
+ * texture format and env mode determine the arithmetic used.
+ */
+GLint
+_mesa_base_tex_format(const struct gl_context *ctx, GLint internalFormat)
+{
+ switch (internalFormat) {
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
+ case 1:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE4:
+ case GL_LUMINANCE8:
+ case GL_LUMINANCE12:
+ case GL_LUMINANCE16:
+ return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
+ case 2:
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE4_ALPHA4:
+ case GL_LUMINANCE6_ALPHA2:
+ case GL_LUMINANCE8_ALPHA8:
+ case GL_LUMINANCE12_ALPHA4:
+ case GL_LUMINANCE12_ALPHA12:
+ case GL_LUMINANCE16_ALPHA16:
+ return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
+ case GL_INTENSITY:
+ case GL_INTENSITY4:
+ case GL_INTENSITY8:
+ case GL_INTENSITY12:
+ case GL_INTENSITY16:
+ return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
+ case 3:
+ return (ctx->API != API_OPENGL_CORE) ? GL_RGB : -1;
+ case GL_RGB:
+ case GL_R3_G3_B2:
+ case GL_RGB4:
+ case GL_RGB5:
+ case GL_RGB8:
+ case GL_RGB10:
+ case GL_RGB12:
+ case GL_RGB16:
+ return GL_RGB;
+ case 4:
+ return (ctx->API != API_OPENGL_CORE) ? GL_RGBA : -1;
+ case GL_RGBA:
+ case GL_RGBA2:
+ case GL_RGBA4:
+ case GL_RGB5_A1:
+ case GL_RGBA8:
+ case GL_RGB10_A2:
+ case GL_RGBA12:
+ case GL_RGBA16:
+ return GL_RGBA;
+ default:
+ ; /* fallthrough */
+ }
+
+ /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
+ */
+ if (_mesa_is_gles(ctx)) {
+ switch (internalFormat) {
+ case GL_BGRA:
+ return GL_RGBA;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.ARB_ES2_compatibility) {
+ switch (internalFormat) {
+ case GL_RGB565:
+ return GL_RGB;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.ARB_depth_texture) {
+ switch (internalFormat) {
+ case GL_DEPTH_COMPONENT:
+ case GL_DEPTH_COMPONENT16:
+ case GL_DEPTH_COMPONENT24:
+ case GL_DEPTH_COMPONENT32:
+ return GL_DEPTH_COMPONENT;
+ case GL_DEPTH_STENCIL:
+ case GL_DEPTH24_STENCIL8:
+ return GL_DEPTH_STENCIL;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.ARB_texture_stencil8) {
+ switch (internalFormat) {
+ case GL_STENCIL_INDEX:
+ case GL_STENCIL_INDEX1:
+ case GL_STENCIL_INDEX4:
+ case GL_STENCIL_INDEX8:
+ case GL_STENCIL_INDEX16:
+ return GL_STENCIL_INDEX;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ switch (internalFormat) {
+ case GL_COMPRESSED_ALPHA:
+ return GL_ALPHA;
+ case GL_COMPRESSED_LUMINANCE:
+ return GL_LUMINANCE;
+ case GL_COMPRESSED_LUMINANCE_ALPHA:
+ return GL_LUMINANCE_ALPHA;
+ case GL_COMPRESSED_INTENSITY:
+ return GL_INTENSITY;
+ case GL_COMPRESSED_RGB:
+ return GL_RGB;
+ case GL_COMPRESSED_RGBA:
+ return GL_RGBA;
+ default:
+ ; /* fallthrough */
+ }
+
+ if (_mesa_is_compressed_format(ctx, internalFormat)) {
+ GLenum base_compressed =
+ _mesa_gl_compressed_format_base_format(internalFormat);
+ if (base_compressed)
+ return base_compressed;
+ }
+
+ if ((ctx->Extensions.KHR_texture_compression_astc_ldr &&
+ is_astc_2d_format(internalFormat)) ||
+ (ctx->Extensions.OES_texture_compression_astc &&
+ is_astc_3d_format(internalFormat)))
+ return GL_RGBA;
+
+ if (ctx->Extensions.MESA_ycbcr_texture) {
+ if (internalFormat == GL_YCBCR_MESA)
+ return GL_YCBCR_MESA;
+ }
+
+ if (ctx->Extensions.ARB_texture_float) {
+ switch (internalFormat) {
+ case GL_ALPHA16F_ARB:
+ case GL_ALPHA32F_ARB:
+ return GL_ALPHA;
+ case GL_RGBA16F_ARB:
+ case GL_RGBA32F_ARB:
+ return GL_RGBA;
+ case GL_RGB16F_ARB:
+ case GL_RGB32F_ARB:
+ return GL_RGB;
+ case GL_INTENSITY16F_ARB:
+ case GL_INTENSITY32F_ARB:
+ return GL_INTENSITY;
+ case GL_LUMINANCE16F_ARB:
+ case GL_LUMINANCE32F_ARB:
+ return GL_LUMINANCE;
+ case GL_LUMINANCE_ALPHA16F_ARB:
+ case GL_LUMINANCE_ALPHA32F_ARB:
+ return GL_LUMINANCE_ALPHA;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.EXT_texture_snorm) {
+ switch (internalFormat) {
+ case GL_RED_SNORM:
+ case GL_R8_SNORM:
+ case GL_R16_SNORM:
+ return GL_RED;
+ case GL_RG_SNORM:
+ case GL_RG8_SNORM:
+ case GL_RG16_SNORM:
+ return GL_RG;
+ case GL_RGB_SNORM:
+ case GL_RGB8_SNORM:
+ case GL_RGB16_SNORM:
+ return GL_RGB;
+ case GL_RGBA_SNORM:
+ case GL_RGBA8_SNORM:
+ case GL_RGBA16_SNORM:
+ return GL_RGBA;
+ case GL_ALPHA_SNORM:
+ case GL_ALPHA8_SNORM:
+ case GL_ALPHA16_SNORM:
+ return GL_ALPHA;
+ case GL_LUMINANCE_SNORM:
+ case GL_LUMINANCE8_SNORM:
+ case GL_LUMINANCE16_SNORM:
+ return GL_LUMINANCE;
+ case GL_LUMINANCE_ALPHA_SNORM:
+ case GL_LUMINANCE8_ALPHA8_SNORM:
+ case GL_LUMINANCE16_ALPHA16_SNORM:
+ return GL_LUMINANCE_ALPHA;
+ case GL_INTENSITY_SNORM:
+ case GL_INTENSITY8_SNORM:
+ case GL_INTENSITY16_SNORM:
+ return GL_INTENSITY;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.EXT_texture_sRGB) {
+ switch (internalFormat) {
+ case GL_SRGB_EXT:
+ case GL_SRGB8_EXT:
+ case GL_COMPRESSED_SRGB_EXT:
+ return GL_RGB;
+ case GL_SRGB_ALPHA_EXT:
+ case GL_SRGB8_ALPHA8_EXT:
+ case GL_COMPRESSED_SRGB_ALPHA_EXT:
+ return GL_RGBA;
+ case GL_SLUMINANCE_ALPHA_EXT:
+ case GL_SLUMINANCE8_ALPHA8_EXT:
+ case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
+ return GL_LUMINANCE_ALPHA;
+ case GL_SLUMINANCE_EXT:
+ case GL_SLUMINANCE8_EXT:
+ case GL_COMPRESSED_SLUMINANCE_EXT:
+ return GL_LUMINANCE;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Version >= 30 ||
+ ctx->Extensions.EXT_texture_integer) {
+ switch (internalFormat) {
+ case GL_RGBA8UI_EXT:
+ case GL_RGBA16UI_EXT:
+ case GL_RGBA32UI_EXT:
+ case GL_RGBA8I_EXT:
+ case GL_RGBA16I_EXT:
+ case GL_RGBA32I_EXT:
+ return GL_RGBA;
+ case GL_RGB8UI_EXT:
+ case GL_RGB16UI_EXT:
+ case GL_RGB32UI_EXT:
+ case GL_RGB8I_EXT:
+ case GL_RGB16I_EXT:
+ case GL_RGB32I_EXT:
+ return GL_RGB;
+ }
+ }
+
+ if (ctx->Extensions.ARB_texture_rgb10_a2ui) {
+ switch (internalFormat) {
+ case GL_RGB10_A2UI:
+ return GL_RGBA;
+ }
+ }
+
+ if (ctx->Extensions.EXT_texture_integer) {
+ switch (internalFormat) {
+ case GL_ALPHA8UI_EXT:
+ case GL_ALPHA16UI_EXT:
+ case GL_ALPHA32UI_EXT:
+ case GL_ALPHA8I_EXT:
+ case GL_ALPHA16I_EXT:
+ case GL_ALPHA32I_EXT:
+ return GL_ALPHA;
+ case GL_INTENSITY8UI_EXT:
+ case GL_INTENSITY16UI_EXT:
+ case GL_INTENSITY32UI_EXT:
+ case GL_INTENSITY8I_EXT:
+ case GL_INTENSITY16I_EXT:
+ case GL_INTENSITY32I_EXT:
+ return GL_INTENSITY;
+ case GL_LUMINANCE8UI_EXT:
+ case GL_LUMINANCE16UI_EXT:
+ case GL_LUMINANCE32UI_EXT:
+ case GL_LUMINANCE8I_EXT:
+ case GL_LUMINANCE16I_EXT:
+ case GL_LUMINANCE32I_EXT:
+ return GL_LUMINANCE;
+ case GL_LUMINANCE_ALPHA8UI_EXT:
+ case GL_LUMINANCE_ALPHA16UI_EXT:
+ case GL_LUMINANCE_ALPHA32UI_EXT:
+ case GL_LUMINANCE_ALPHA8I_EXT:
+ case GL_LUMINANCE_ALPHA16I_EXT:
+ case GL_LUMINANCE_ALPHA32I_EXT:
+ return GL_LUMINANCE_ALPHA;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.ARB_texture_rg) {
+ switch (internalFormat) {
+ case GL_R16F:
+ case GL_R32F:
+ if (!ctx->Extensions.ARB_texture_float)
+ break;
+ return GL_RED;
+ case GL_R8I:
+ case GL_R8UI:
+ case GL_R16I:
+ case GL_R16UI:
+ case GL_R32I:
+ case GL_R32UI:
+ if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer)
+ break;
+ /* FALLTHROUGH */
+ case GL_R8:
+ case GL_R16:
+ case GL_RED:
+ case GL_COMPRESSED_RED:
+ return GL_RED;
+
+ case GL_RG16F:
+ case GL_RG32F:
+ if (!ctx->Extensions.ARB_texture_float)
+ break;
+ return GL_RG;
+ case GL_RG8I:
+ case GL_RG8UI:
+ case GL_RG16I:
+ case GL_RG16UI:
+ case GL_RG32I:
+ case GL_RG32UI:
+ if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer)
+ break;
+ /* FALLTHROUGH */
+ case GL_RG:
+ case GL_RG8:
+ case GL_RG16:
+ case GL_COMPRESSED_RG:
+ return GL_RG;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.EXT_texture_shared_exponent) {
+ switch (internalFormat) {
+ case GL_RGB9_E5_EXT:
+ return GL_RGB;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.EXT_packed_float) {
+ switch (internalFormat) {
+ case GL_R11F_G11F_B10F_EXT:
+ return GL_RGB;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.ARB_depth_buffer_float) {
+ switch (internalFormat) {
+ case GL_DEPTH_COMPONENT32F:
+ return GL_DEPTH_COMPONENT;
+ case GL_DEPTH32F_STENCIL8:
+ return GL_DEPTH_STENCIL;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ return -1; /* error */
+}
+
+/**
+ * Returns the effective internal format from a texture format and type.
+ * This is used by texture image operations internally for validation, when
+ * the specified internal format is a base (unsized) format.
+ *
+ * This method will only return a valid effective internal format if the
+ * combination of format, type and internal format in base form, is acceptable.
+ *
+ * If a single sized internal format is defined in the spec (OpenGL-ES 3.0.4) or
+ * in extensions, to unambiguously correspond to the given base format, then
+ * that internal format is returned as the effective. Otherwise, if the
+ * combination is accepted but a single effective format is not defined, the
+ * passed base format will be returned instead.
+ *
+ * \param format the texture format
+ * \param type the texture type
+ */
+static GLenum
+_mesa_es3_effective_internal_format_for_format_and_type(GLenum format,
+ GLenum type)
+{
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ switch (format) {
+ case GL_RGBA:
+ return GL_RGBA8;
+ case GL_RGB:
+ return GL_RGB8;
+ case GL_RG:
+ return GL_RG8;
+ case GL_RED:
+ return GL_R8;
+ /* Although LUMINANCE_ALPHA, LUMINANCE and ALPHA appear in table 3.12,
+ * (section 3.8 Texturing, page 128 of the OpenGL-ES 3.0.4) as effective
+ * internal formats, they do not correspond to GL constants, so the base
+ * format is returned instead.
+ */
+ case GL_BGRA_EXT:
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE:
+ case GL_ALPHA:
+ return format;
+ }
+ break;
+
+ case GL_UNSIGNED_SHORT_4_4_4_4:
+ if (format == GL_RGBA)
+ return GL_RGBA4;
+ break;
+
+ case GL_UNSIGNED_SHORT_5_5_5_1:
+ if (format == GL_RGBA)
+ return GL_RGB5_A1;
+ break;
+
+ case GL_UNSIGNED_SHORT_5_6_5:
+ if (format == GL_RGB)
+ return GL_RGB565;
+ break;
+
+ /* OES_packed_depth_stencil */
+ case GL_UNSIGNED_INT_24_8:
+ if (format == GL_DEPTH_STENCIL)
+ return GL_DEPTH24_STENCIL8;
+ break;
+
+ case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+ if (format == GL_DEPTH_STENCIL)
+ return GL_DEPTH32F_STENCIL8;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (format == GL_DEPTH_COMPONENT)
+ return GL_DEPTH_COMPONENT16;
+ break;
+
+ case GL_UNSIGNED_INT:
+ /* It can be DEPTH_COMPONENT16 or DEPTH_COMPONENT24, so just return
+ * the format.
+ */
+ if (format == GL_DEPTH_COMPONENT)
+ return format;
+ break;
+
+ /* OES_texture_float and OES_texture_half_float */
+ case GL_FLOAT:
+ if (format == GL_DEPTH_COMPONENT)
+ return GL_DEPTH_COMPONENT32F;
+ /* fall through */
+ case GL_HALF_FLOAT_OES:
+ switch (format) {
+ case GL_RGBA:
+ case GL_RGB:
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE:
+ case GL_ALPHA:
+ case GL_RED:
+ case GL_RG:
+ return format;
+ }
+ break;
+ case GL_HALF_FLOAT:
+ switch (format) {
+ case GL_RG:
+ case GL_RED:
+ return format;
+ }
+ break;
+
+ /* GL_EXT_texture_type_2_10_10_10_REV */
+ case GL_UNSIGNED_INT_2_10_10_10_REV:
+ switch (format) {
+ case GL_RGBA:
+ case GL_RGB:
+ return format;
+ }
+ break;
+
+ default:
+ /* fall through and return NONE */
+ break;
+ }
+
+ return GL_NONE;
+}
+
+/**
+ * Do error checking of format/type combinations for OpenGL ES 3
+ * glTex[Sub]Image, or ES1/ES2 with GL_OES_required_internalformat.
+ * \return error code, or GL_NO_ERROR.
+ */
+GLenum
+_mesa_es3_error_check_format_and_type(const struct gl_context *ctx,
+ GLenum format, GLenum type,
+ GLenum internalFormat)
+{
+ /* If internalFormat is an unsized format, then the effective internal
+ * format derived from format and type should be used instead. Page 127,
+ * section "3.8 Texturing" of the GLES 3.0.4 spec states:
+ *
+ * "if internalformat is a base internal format, the effective
+ * internal format is a sized internal format that is derived
+ * from the format and type for internal use by the GL.
+ * Table 3.12 specifies the mapping of format and type to effective
+ * internal formats. The effective internal format is used by the GL
+ * for purposes such as texture completeness or type checks for
+ * CopyTex* commands. In these cases, the GL is required to operate
+ * as if the effective internal format was used as the internalformat
+ * when specifying the texture data."
+ */
+ if (_mesa_is_enum_format_unsized(internalFormat)) {
+ GLenum effectiveInternalFormat =
+ _mesa_es3_effective_internal_format_for_format_and_type(format, type);
+
+ if (effectiveInternalFormat == GL_NONE)
+ return GL_INVALID_OPERATION;
+
+ GLenum baseInternalFormat;
+ if (internalFormat == GL_BGRA_EXT) {
+ /* Unfortunately, _mesa_base_tex_format returns a base format of
+ * GL_RGBA for GL_BGRA_EXT. This makes perfect sense if you're
+ * asking the question, "what channels does this format have?"
+ * However, if we're trying to determine if two internal formats
+ * match in the ES3 sense, we actually want GL_BGRA.
+ */
+ baseInternalFormat = GL_BGRA_EXT;
+ } else {
+ baseInternalFormat =
+ _mesa_base_tex_format(ctx, effectiveInternalFormat);
+ }
+
+ if (internalFormat != baseInternalFormat)
+ return GL_INVALID_OPERATION;
+
+ internalFormat = effectiveInternalFormat;
+ }
+
+ switch (format) {
+ case GL_BGRA_EXT:
+ if (type != GL_UNSIGNED_BYTE || internalFormat != GL_BGRA)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_RGBA:
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ switch (internalFormat) {
+ case GL_RGBA:
+ case GL_RGBA8:
+ case GL_RGB5_A1:
+ case GL_RGBA4:
+ break;
+ case GL_SRGB8_ALPHA8_EXT:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_BYTE:
+ if (ctx->Version <= 20 || internalFormat != GL_RGBA8_SNORM)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (!_mesa_has_EXT_texture_norm16(ctx) || internalFormat != GL_RGBA16)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_SHORT:
+ if (!_mesa_has_EXT_texture_norm16(ctx) ||
+ internalFormat != GL_RGBA16_SNORM)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT_4_4_4_4:
+ switch (internalFormat) {
+ case GL_RGBA:
+ case GL_RGBA4:
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_UNSIGNED_SHORT_5_5_5_1:
+ switch (internalFormat) {
+ case GL_RGBA:
+ case GL_RGB5_A1:
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_UNSIGNED_INT_2_10_10_10_REV:
+ switch (internalFormat) {
+ case GL_RGBA:
+ case GL_RGB10_A2:
+ case GL_RGB5_A1:
+ if (!ctx->Extensions.EXT_texture_type_2_10_10_10_REV)
+ return GL_INVALID_OPERATION;
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_HALF_FLOAT:
+ if (ctx->Version <= 20 || internalFormat != GL_RGBA16F)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_FLOAT:
+ switch (internalFormat) {
+ case GL_RGBA16F:
+ case GL_RGBA32F:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ break;
+ case GL_RGBA:
+ if (ctx->Extensions.OES_texture_float && internalFormat == format)
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_HALF_FLOAT_OES:
+ if (ctx->Extensions.OES_texture_half_float && internalFormat == format)
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_RGBA_INTEGER:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ if (internalFormat != GL_RGBA8UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_BYTE:
+ if (internalFormat != GL_RGBA8I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (internalFormat != GL_RGBA16UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_SHORT:
+ if (internalFormat != GL_RGBA16I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_INT:
+ if (internalFormat != GL_RGBA32UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_INT:
+ if (internalFormat != GL_RGBA32I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_INT_2_10_10_10_REV:
+ if (internalFormat != GL_RGB10_A2UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_RGB:
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ switch (internalFormat) {
+ case GL_RGB:
+ case GL_RGB8:
+ case GL_RGB565:
+ break;
+ case GL_SRGB8:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_BYTE:
+ if (ctx->Version <= 20 || internalFormat != GL_RGB8_SNORM)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (!_mesa_has_EXT_texture_norm16(ctx) || internalFormat != GL_RGB16)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_SHORT:
+ if (!_mesa_has_EXT_texture_norm16(ctx) ||
+ internalFormat != GL_RGB16_SNORM)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT_5_6_5:
+ switch (internalFormat) {
+ case GL_RGB:
+ case GL_RGB565:
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_UNSIGNED_INT_10F_11F_11F_REV:
+ if (ctx->Version <= 20 || internalFormat != GL_R11F_G11F_B10F)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_INT_5_9_9_9_REV:
+ if (ctx->Version <= 20 || internalFormat != GL_RGB9_E5)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_HALF_FLOAT:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ switch (internalFormat) {
+ case GL_RGB16F:
+ case GL_R11F_G11F_B10F:
+ case GL_RGB9_E5:
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_FLOAT:
+ switch (internalFormat) {
+ case GL_RGB16F:
+ case GL_RGB32F:
+ case GL_R11F_G11F_B10F:
+ case GL_RGB9_E5:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ break;
+ case GL_RGB:
+ if (ctx->Extensions.OES_texture_float && internalFormat == format)
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_HALF_FLOAT_OES:
+ if (!ctx->Extensions.OES_texture_half_float || internalFormat != format)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_INT_2_10_10_10_REV:
+ switch (internalFormat) {
+ case GL_RGB:
+ case GL_RGB10:
+ case GL_RGB8:
+ case GL_RGB565:
+ /* GL_EXT_texture_type_2_10_10_10_REV allows GL_RGB even though
+ * GLES3 doesn't, and GL_OES_required_internalformat extends that
+ * to allow the sized RGB internalformats as well.
+ */
+ if (!ctx->Extensions.EXT_texture_type_2_10_10_10_REV)
+ return GL_INVALID_OPERATION;
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_RGB_INTEGER:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ if (internalFormat != GL_RGB8UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_BYTE:
+ if (internalFormat != GL_RGB8I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (internalFormat != GL_RGB16UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_SHORT:
+ if (internalFormat != GL_RGB16I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_INT:
+ if (internalFormat != GL_RGB32UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_INT:
+ if (internalFormat != GL_RGB32I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_RG:
+ if (!ctx->Extensions.ARB_texture_rg)
+ return GL_INVALID_OPERATION;
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ if (internalFormat != GL_RG8)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_BYTE:
+ if (internalFormat != GL_RG8_SNORM)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (!_mesa_has_EXT_texture_norm16(ctx) || internalFormat != GL_RG16)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_SHORT:
+ if (!_mesa_has_EXT_texture_norm16(ctx) ||
+ internalFormat != GL_RG16_SNORM)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_HALF_FLOAT:
+ case GL_HALF_FLOAT_OES:
+ switch (internalFormat) {
+ case GL_RG16F:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ break;
+ case GL_RG:
+ if (ctx->Extensions.ARB_texture_rg &&
+ ctx->Extensions.OES_texture_half_float)
+ break;
+ /* fallthrough */
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_FLOAT:
+ switch (internalFormat) {
+ case GL_RG16F:
+ case GL_RG32F:
+ break;
+ case GL_RG:
+ if (ctx->Extensions.ARB_texture_rg &&
+ ctx->Extensions.OES_texture_float)
+ break;
+ /* fallthrough */
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_RG_INTEGER:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ if (internalFormat != GL_RG8UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_BYTE:
+ if (internalFormat != GL_RG8I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (internalFormat != GL_RG16UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_SHORT:
+ if (internalFormat != GL_RG16I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_INT:
+ if (internalFormat != GL_RG32UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_INT:
+ if (internalFormat != GL_RG32I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_RED:
+ if (!ctx->Extensions.ARB_texture_rg)
+ return GL_INVALID_OPERATION;
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ if (internalFormat != GL_R8)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_BYTE:
+ if (internalFormat != GL_R8_SNORM)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (!_mesa_has_EXT_texture_norm16(ctx) || internalFormat != GL_R16)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_SHORT:
+ if (!_mesa_has_EXT_texture_norm16(ctx) ||
+ internalFormat != GL_R16_SNORM)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_HALF_FLOAT:
+ case GL_HALF_FLOAT_OES:
+ switch (internalFormat) {
+ case GL_R16F:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ break;
+ case GL_RG:
+ case GL_RED:
+ if (ctx->Extensions.ARB_texture_rg &&
+ ctx->Extensions.OES_texture_half_float)
+ break;
+ /* fallthrough */
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_FLOAT:
+ switch (internalFormat) {
+ case GL_R16F:
+ case GL_R32F:
+ break;
+ case GL_RED:
+ if (ctx->Extensions.ARB_texture_rg &&
+ ctx->Extensions.OES_texture_float)
+ break;
+ /* fallthrough */
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_RED_INTEGER:
+ if (ctx->Version <= 20)
+ return GL_INVALID_OPERATION;
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ if (internalFormat != GL_R8UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_BYTE:
+ if (internalFormat != GL_R8I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ if (internalFormat != GL_R16UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_SHORT:
+ if (internalFormat != GL_R16I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_INT:
+ if (internalFormat != GL_R32UI)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_INT:
+ if (internalFormat != GL_R32I)
+ return GL_INVALID_OPERATION;
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_DEPTH_COMPONENT:
+ switch (type) {
+ case GL_UNSIGNED_SHORT:
+ if (internalFormat != GL_DEPTH_COMPONENT
+ && internalFormat != GL_DEPTH_COMPONENT16)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_UNSIGNED_INT:
+ switch (internalFormat) {
+ case GL_DEPTH_COMPONENT:
+ case GL_DEPTH_COMPONENT16:
+ case GL_DEPTH_COMPONENT24:
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_FLOAT:
+ if (ctx->Version <= 20 || internalFormat != GL_DEPTH_COMPONENT32F)
+ return GL_INVALID_OPERATION;
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_DEPTH_STENCIL:
+ switch (type) {
+ case GL_UNSIGNED_INT_24_8:
+ if (internalFormat != GL_DEPTH_STENCIL
+ && internalFormat != GL_DEPTH24_STENCIL8)
+ return GL_INVALID_OPERATION;
+ break;
+
+ case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+ if (ctx->Version <= 20 || internalFormat != GL_DEPTH32F_STENCIL8)
+ return GL_INVALID_OPERATION;
+ break;
+
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_STENCIL_INDEX:
+ if (!_mesa_has_OES_texture_stencil8(ctx) ||
+ type != GL_UNSIGNED_BYTE ||
+ internalFormat != GL_STENCIL_INDEX8) {
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_ALPHA:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_ALPHA:
+ switch (type) {
+ case GL_FLOAT:
+ if (!ctx->Extensions.OES_texture_float || internalFormat != format)
+ return GL_INVALID_OPERATION;
+ break;
+ case GL_HALF_FLOAT_OES:
+ if (!ctx->Extensions.OES_texture_half_float || internalFormat != format)
+ return GL_INVALID_OPERATION;
+ break;
+ case GL_UNSIGNED_BYTE:
+ if (!(format == internalFormat ||
+ (format == GL_ALPHA && internalFormat == GL_ALPHA8) ||
+ (format == GL_LUMINANCE && internalFormat == GL_LUMINANCE8) ||
+ (format == GL_LUMINANCE_ALPHA &&
+ ((internalFormat == GL_LUMINANCE8_ALPHA8) ||
+ (internalFormat == GL_LUMINANCE4_ALPHA4))))) {
+ return GL_INVALID_OPERATION;
+ }
+ break;
+ default:
+ return GL_INVALID_OPERATION;
+ }
+ break;
+ }
+
+ return GL_NO_ERROR;
+}
+
+static void
+set_swizzle(uint8_t *swizzle, int x, int y, int z, int w)
+{
+ swizzle[MESA_FORMAT_SWIZZLE_X] = x;
+ swizzle[MESA_FORMAT_SWIZZLE_Y] = y;
+ swizzle[MESA_FORMAT_SWIZZLE_Z] = z;
+ swizzle[MESA_FORMAT_SWIZZLE_W] = w;
+}
+
+static bool
+get_swizzle_from_gl_format(GLenum format, uint8_t *swizzle)
+{
+ switch (format) {
+ case GL_RGBA:
+ case GL_RGBA_INTEGER_EXT:
+ set_swizzle(swizzle, 0, 1, 2, 3);
+ return true;
+ case GL_BGRA:
+ case GL_BGRA_INTEGER_EXT:
+ set_swizzle(swizzle, 2, 1, 0, 3);
+ return true;
+ case GL_ABGR_EXT:
+ set_swizzle(swizzle, 3, 2, 1, 0);
+ return true;
+ case GL_RGB:
+ case GL_RGB_INTEGER_EXT:
+ set_swizzle(swizzle, 0, 1, 2, 5);
+ return true;
+ case GL_BGR:
+ case GL_BGR_INTEGER_EXT:
+ set_swizzle(swizzle, 2, 1, 0, 5);
+ return true;
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+ set_swizzle(swizzle, 0, 0, 0, 1);
+ return true;
+ case GL_RG:
+ case GL_RG_INTEGER:
+ set_swizzle(swizzle, 0, 1, 4, 5);
+ return true;
+ case GL_RED:
+ case GL_RED_INTEGER_EXT:
+ set_swizzle(swizzle, 0, 4, 4, 5);
+ return true;
+ case GL_GREEN:
+ case GL_GREEN_INTEGER_EXT:
+ set_swizzle(swizzle, 4, 0, 4, 5);
+ return true;
+ case GL_BLUE:
+ case GL_BLUE_INTEGER_EXT:
+ set_swizzle(swizzle, 4, 4, 0, 5);
+ return true;
+ case GL_ALPHA:
+ case GL_ALPHA_INTEGER_EXT:
+ set_swizzle(swizzle, 4, 4, 4, 0);
+ return true;
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_INTEGER_EXT:
+ set_swizzle(swizzle, 0, 0, 0, 5);
+ return true;
+ case GL_INTENSITY:
+ set_swizzle(swizzle, 0, 0, 0, 0);
+ return true;
+ default:
+ return false;
+ }
+}
+
+/**
+* Take an OpenGL format (GL_RGB, GL_RGBA, etc), OpenGL data type (GL_INT,
+* GL_FOAT, etc) and return a matching mesa_array_format or a mesa_format
+* otherwise (for non-array formats).
+*
+* This function will typically be used to compute a mesa format from a GL type
+* so we can then call _mesa_format_convert. This function does
+* not consider byte swapping, so it returns types assuming that no byte
+* swapping is involved. If byte swapping is involved then clients are supposed
+* to handle that on their side before calling _mesa_format_convert.
+*
+* This function returns an uint32_t that can pack a mesa_format or a
+* mesa_array_format. Clients must check the mesa array format bit
+* (MESA_ARRAY_FORMAT_BIT) on the return value to know if the returned
+* format is a mesa_array_format or a mesa_format.
+*/
+uint32_t
+_mesa_format_from_format_and_type(GLenum format, GLenum type)
+{
+ bool is_array_format = true;
+ uint8_t swizzle[4];
+ bool normalized = false, is_float = false, is_signed = false;
+ int num_channels = 0, type_size = 0;
+
+ /* Extract array format type information from the OpenGL data type */
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ type_size = 1;
+ break;
+ case GL_BYTE:
+ type_size = 1;
+ is_signed = true;
+ break;
+ case GL_UNSIGNED_SHORT:
+ type_size = 2;
+ break;
+ case GL_SHORT:
+ type_size = 2;
+ is_signed = true;
+ break;
+ case GL_UNSIGNED_INT:
+ type_size = 4;
+ break;
+ case GL_INT:
+ type_size = 4;
+ is_signed = true;
+ break;
+ case GL_HALF_FLOAT:
+ case GL_HALF_FLOAT_OES:
+ type_size = 2;
+ is_signed = true;
+ is_float = true;
+ break;
+ case GL_FLOAT:
+ type_size = 4;
+ is_signed = true;
+ is_float = true;
+ break;
+ default:
+ is_array_format = false;
+ break;
+ }
+
+ /* Extract array format swizzle information from the OpenGL format */
+ if (is_array_format)
+ is_array_format = get_swizzle_from_gl_format(format, swizzle);
+
+ /* If this is an array format type after checking data type and format,
+ * create the array format
+ */
+ if (is_array_format) {
+ normalized = !_mesa_is_enum_format_integer(format);
+ num_channels = _mesa_components_in_format(format);
+
+ return MESA_ARRAY_FORMAT(type_size, is_signed, is_float,
+ normalized, num_channels,
+ swizzle[0], swizzle[1], swizzle[2], swizzle[3]);
+ }
+
+ /* Otherwise this is not an array format, so return the mesa_format
+ * matching the OpenGL format and data type
+ */
+ switch (type) {
+ case GL_UNSIGNED_SHORT_5_6_5:
+ if (format == GL_RGB)
+ return MESA_FORMAT_B5G6R5_UNORM;
+ else if (format == GL_BGR)
+ return MESA_FORMAT_R5G6B5_UNORM;
+ else if (format == GL_RGB_INTEGER)
+ return MESA_FORMAT_B5G6R5_UINT;
+ break;
+ case GL_UNSIGNED_SHORT_5_6_5_REV:
+ if (format == GL_RGB)
+ return MESA_FORMAT_R5G6B5_UNORM;
+ else if (format == GL_BGR)
+ return MESA_FORMAT_B5G6R5_UNORM;
+ else if (format == GL_RGB_INTEGER)
+ return MESA_FORMAT_R5G6B5_UINT;
+ break;
+ case GL_UNSIGNED_SHORT_4_4_4_4:
+ if (format == GL_RGBA)
+ return MESA_FORMAT_A4B4G4R4_UNORM;
+ else if (format == GL_BGRA)
+ return MESA_FORMAT_A4R4G4B4_UNORM;
+ else if (format == GL_ABGR_EXT)
+ return MESA_FORMAT_R4G4B4A4_UNORM;
+ else if (format == GL_RGBA_INTEGER)
+ return MESA_FORMAT_A4B4G4R4_UINT;
+ else if (format == GL_BGRA_INTEGER)
+ return MESA_FORMAT_A4R4G4B4_UINT;
+ break;
+ case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+ if (format == GL_RGBA)
+ return MESA_FORMAT_R4G4B4A4_UNORM;
+ else if (format == GL_BGRA)
+ return MESA_FORMAT_B4G4R4A4_UNORM;
+ else if (format == GL_ABGR_EXT)
+ return MESA_FORMAT_A4B4G4R4_UNORM;
+ else if (format == GL_RGBA_INTEGER)
+ return MESA_FORMAT_R4G4B4A4_UINT;
+ else if (format == GL_BGRA_INTEGER)
+ return MESA_FORMAT_B4G4R4A4_UINT;
+ break;
+ case GL_UNSIGNED_SHORT_5_5_5_1:
+ if (format == GL_RGBA)
+ return MESA_FORMAT_A1B5G5R5_UNORM;
+ else if (format == GL_BGRA)
+ return MESA_FORMAT_A1R5G5B5_UNORM;
+ else if (format == GL_RGBA_INTEGER)
+ return MESA_FORMAT_A1B5G5R5_UINT;
+ else if (format == GL_BGRA_INTEGER)
+ return MESA_FORMAT_A1R5G5B5_UINT;
+ break;
+ case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+ if (format == GL_RGBA)
+ return MESA_FORMAT_R5G5B5A1_UNORM;
+ else if (format == GL_BGRA)
+ return MESA_FORMAT_B5G5R5A1_UNORM;
+ else if (format == GL_RGBA_INTEGER)
+ return MESA_FORMAT_R5G5B5A1_UINT;
+ else if (format == GL_BGRA_INTEGER)
+ return MESA_FORMAT_B5G5R5A1_UINT;
+ break;
+ case GL_UNSIGNED_BYTE_3_3_2:
+ if (format == GL_RGB)
+ return MESA_FORMAT_B2G3R3_UNORM;
+ else if (format == GL_RGB_INTEGER)
+ return MESA_FORMAT_B2G3R3_UINT;
+ break;
+ case GL_UNSIGNED_BYTE_2_3_3_REV:
+ if (format == GL_RGB)
+ return MESA_FORMAT_R3G3B2_UNORM;
+ else if (format == GL_RGB_INTEGER)
+ return MESA_FORMAT_R3G3B2_UINT;
+ break;
+ case GL_UNSIGNED_INT_5_9_9_9_REV:
+ if (format == GL_RGB)
+ return MESA_FORMAT_R9G9B9E5_FLOAT;
+ break;
+ case GL_UNSIGNED_INT_10_10_10_2:
+ if (format == GL_RGBA)
+ return MESA_FORMAT_A2B10G10R10_UNORM;
+ else if (format == GL_RGBA_INTEGER)
+ return MESA_FORMAT_A2B10G10R10_UINT;
+ else if (format == GL_BGRA)
+ return MESA_FORMAT_A2R10G10B10_UNORM;
+ else if (format == GL_BGRA_INTEGER)
+ return MESA_FORMAT_A2R10G10B10_UINT;
+ break;
+ case GL_UNSIGNED_INT_2_10_10_10_REV:
+ if (format == GL_RGB)
+ return MESA_FORMAT_R10G10B10X2_UNORM;
+ if (format == GL_RGBA)
+ return MESA_FORMAT_R10G10B10A2_UNORM;
+ else if (format == GL_RGBA_INTEGER)
+ return MESA_FORMAT_R10G10B10A2_UINT;
+ else if (format == GL_BGRA)
+ return MESA_FORMAT_B10G10R10A2_UNORM;
+ else if (format == GL_BGRA_INTEGER)
+ return MESA_FORMAT_B10G10R10A2_UINT;
+ break;
+ case GL_UNSIGNED_INT_8_8_8_8:
+ if (format == GL_RGBA)
+ return MESA_FORMAT_A8B8G8R8_UNORM;
+ else if (format == GL_BGRA)
+ return MESA_FORMAT_A8R8G8B8_UNORM;
+ else if (format == GL_ABGR_EXT)
+ return MESA_FORMAT_R8G8B8A8_UNORM;
+ else if (format == GL_RGBA_INTEGER)
+ return MESA_FORMAT_A8B8G8R8_UINT;
+ else if (format == GL_BGRA_INTEGER)
+ return MESA_FORMAT_A8R8G8B8_UINT;
+ break;
+ case GL_UNSIGNED_INT_8_8_8_8_REV:
+ if (format == GL_RGBA)
+ return MESA_FORMAT_R8G8B8A8_UNORM;
+ else if (format == GL_BGRA)
+ return MESA_FORMAT_B8G8R8A8_UNORM;
+ else if (format == GL_ABGR_EXT)
+ return MESA_FORMAT_A8B8G8R8_UNORM;
+ else if (format == GL_RGBA_INTEGER)
+ return MESA_FORMAT_R8G8B8A8_UINT;
+ else if (format == GL_BGRA_INTEGER)
+ return MESA_FORMAT_B8G8R8A8_UINT;
+ break;
+ case GL_UNSIGNED_SHORT_8_8_MESA:
+ if (format == GL_YCBCR_MESA)
+ return MESA_FORMAT_YCBCR;
+ break;
+ case GL_UNSIGNED_SHORT_8_8_REV_MESA:
+ if (format == GL_YCBCR_MESA)
+ return MESA_FORMAT_YCBCR_REV;
+ break;
+ case GL_UNSIGNED_INT_10F_11F_11F_REV:
+ if (format == GL_RGB)
+ return MESA_FORMAT_R11G11B10_FLOAT;
+ break;
+ case GL_FLOAT:
+ if (format == GL_DEPTH_COMPONENT)
+ return MESA_FORMAT_Z_FLOAT32;
+ break;
+ case GL_UNSIGNED_INT:
+ if (format == GL_DEPTH_COMPONENT)
+ return MESA_FORMAT_Z_UNORM32;
+ break;
+ case GL_UNSIGNED_SHORT:
+ if (format == GL_DEPTH_COMPONENT)
+ return MESA_FORMAT_Z_UNORM16;
+ break;
+ case GL_UNSIGNED_INT_24_8:
+ if (format == GL_DEPTH_STENCIL)
+ return MESA_FORMAT_Z24_UNORM_S8_UINT;
+ break;
+ case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+ if (format == GL_DEPTH_STENCIL)
+ return MESA_FORMAT_Z32_FLOAT_S8X24_UINT;
+ break;
+ default:
+ break;
+ }
+
+ /* If we got here it means that we could not find a Mesa format that
+ * matches the GL format/type provided. We may need to add a new Mesa
+ * format in that case.
+ */
+ unreachable("Unsupported format");
+}
+
+uint32_t
+_mesa_tex_format_from_format_and_type(const struct gl_context *ctx,
+ GLenum gl_format, GLenum type)
+{
+ mesa_format format = _mesa_format_from_format_and_type(gl_format, type);
+
+ if (_mesa_format_is_mesa_array_format(format))
+ format = _mesa_format_from_array_format(format);
+
+ if (format == MESA_FORMAT_NONE || !ctx->TextureFormatSupported[format])
+ return MESA_FORMAT_NONE;
+
+ return format;
+}
+
+/**
+ * Returns true if \p internal_format is a sized internal format that
+ * is marked "Color Renderable" in Table 8.10 of the ES 3.2 specification.
+ */
+bool
+_mesa_is_es3_color_renderable(const struct gl_context *ctx,
+ GLenum internal_format)
+{
+ switch (internal_format) {
+ case GL_R8:
+ case GL_RG8:
+ case GL_RGB8:
+ case GL_RGB565:
+ case GL_RGBA4:
+ case GL_RGB5_A1:
+ case GL_RGBA8:
+ case GL_RGB10_A2:
+ case GL_RGB10_A2UI:
+ case GL_SRGB8_ALPHA8:
+ case GL_R16F:
+ case GL_RG16F:
+ case GL_RGBA16F:
+ case GL_R32F:
+ case GL_RG32F:
+ case GL_RGBA32F:
+ case GL_R11F_G11F_B10F:
+ case GL_R8I:
+ case GL_R8UI:
+ case GL_R16I:
+ case GL_R16UI:
+ case GL_R32I:
+ case GL_R32UI:
+ case GL_RG8I:
+ case GL_RG8UI:
+ case GL_RG16I:
+ case GL_RG16UI:
+ case GL_RG32I:
+ case GL_RG32UI:
+ case GL_RGBA8I:
+ case GL_RGBA8UI:
+ case GL_RGBA16I:
+ case GL_RGBA16UI:
+ case GL_RGBA32I:
+ case GL_RGBA32UI:
+ return true;
+ case GL_R16:
+ case GL_RG16:
+ case GL_RGBA16:
+ return _mesa_has_EXT_texture_norm16(ctx);
+ default:
+ return false;
+ }
+}
+
+/**
+ * Returns true if \p internal_format is a sized internal format that
+ * is marked "Texture Filterable" in Table 8.10 of the ES 3.2 specification.
+ */
+bool
+_mesa_is_es3_texture_filterable(const struct gl_context *ctx,
+ GLenum internal_format)
+{
+ switch (internal_format) {
+ case GL_R8:
+ case GL_R8_SNORM:
+ case GL_RG8:
+ case GL_RG8_SNORM:
+ case GL_RGB8:
+ case GL_RGB8_SNORM:
+ case GL_RGB565:
+ case GL_RGBA4:
+ case GL_RGB5_A1:
+ case GL_RGBA8:
+ case GL_RGBA8_SNORM:
+ case GL_RGB10_A2:
+ case GL_SRGB8:
+ case GL_SRGB8_ALPHA8:
+ case GL_R16F:
+ case GL_RG16F:
+ case GL_RGB16F:
+ case GL_RGBA16F:
+ case GL_R11F_G11F_B10F:
+ case GL_RGB9_E5:
+ return true;
+ case GL_R16:
+ case GL_R16_SNORM:
+ case GL_RG16:
+ case GL_RG16_SNORM:
+ case GL_RGB16:
+ case GL_RGB16_SNORM:
+ case GL_RGBA16:
+ case GL_RGBA16_SNORM:
+ return _mesa_has_EXT_texture_norm16(ctx);
+ case GL_R32F:
+ case GL_RG32F:
+ case GL_RGB32F:
+ case GL_RGBA32F:
+ /* The OES_texture_float_linear spec says:
+ *
+ * "When implemented against OpenGL ES 3.0 or later versions, sized
+ * 32-bit floating-point formats become texture-filterable. This
+ * should be noted by, for example, checking the ``TF'' column of
+ * table 8.13 in the ES 3.1 Specification (``Correspondence of sized
+ * internal formats to base internal formats ... and use cases ...'')
+ * for the R32F, RG32F, RGB32F, and RGBA32F formats."
+ */
+ return ctx->Extensions.OES_texture_float_linear;
+ default:
+ return false;
+ }
+}