{{ 2, 1}, {0, 0}, {0, 0}} /* 128 bits per pixel */
};
+/* Translate a pipe_format into a useful texture format for sampling.
+ *
+ * Some special formats are translated directly using R300_EASY_TX_FORMAT,
+ * but the majority of them is translated in a generic way, automatically
+ * supporting all the formats hw can support.
+ *
+ * R300_EASY_TX_FORMAT swizzles the texture.
+ * Note the signature of R300_EASY_TX_FORMAT:
+ * R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
+ *
+ * The FORMAT specifies how the texture sampler will treat the texture, and
+ * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
+static uint32_t r300_translate_texformat(enum pipe_format format)
+{
+ uint32_t result = 0;
+ const struct util_format_description *desc;
+ unsigned components = 0, i;
+ boolean uniform = TRUE;
+ const uint32_t swizzle_shift[4] = {
+ R300_TX_FORMAT_R_SHIFT,
+ R300_TX_FORMAT_G_SHIFT,
+ R300_TX_FORMAT_B_SHIFT,
+ R300_TX_FORMAT_A_SHIFT
+ };
+ const uint32_t sign_bit[4] = {
+ R300_TX_FORMAT_SIGNED_X,
+ R300_TX_FORMAT_SIGNED_Y,
+ R300_TX_FORMAT_SIGNED_Z,
+ R300_TX_FORMAT_SIGNED_W,
+ };
+
+ desc = util_format_description(format);
+
+ /* Colorspace (return non-RGB formats directly). */
+ switch (desc->colorspace) {
+ /* Depth stencil formats. */
+ case UTIL_FORMAT_COLORSPACE_ZS:
+ switch (format) {
+ case PIPE_FORMAT_Z16_UNORM:
+ return R300_EASY_TX_FORMAT(X, X, X, X, X16);
+ case PIPE_FORMAT_Z24X8_UNORM:
+ case PIPE_FORMAT_Z24S8_UNORM:
+ return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
+ default:
+ return ~0; /* Unsupported. */
+ }
+
+ /* YUV formats. */
+ case UTIL_FORMAT_COLORSPACE_YUV:
+ result |= R300_TX_FORMAT_YUV_TO_RGB;
+
+ switch (format) {
+ case PIPE_FORMAT_YCBCR:
+ return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
+ case PIPE_FORMAT_YCBCR_REV:
+ return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
+ default:
+ return ~0; /* Unsupported/unknown. */
+ }
+
+ /* Add gamma correction. */
+ case UTIL_FORMAT_COLORSPACE_SRGB:
+ result |= R300_TX_FORMAT_GAMMA;
+ break;
+
+ default:;
+ }
+
+ /* Add swizzle. */
+ for (i = 0; i < 4; i++) {
+ switch (desc->swizzle[i]) {
+ case UTIL_FORMAT_SWIZZLE_X:
+ case UTIL_FORMAT_SWIZZLE_NONE:
+ result |= R300_TX_FORMAT_X << swizzle_shift[i];
+ break;
+ case UTIL_FORMAT_SWIZZLE_Y:
+ result |= R300_TX_FORMAT_Y << swizzle_shift[i];
+ break;
+ case UTIL_FORMAT_SWIZZLE_Z:
+ result |= R300_TX_FORMAT_Z << swizzle_shift[i];
+ break;
+ case UTIL_FORMAT_SWIZZLE_W:
+ result |= R300_TX_FORMAT_W << swizzle_shift[i];
+ break;
+ case UTIL_FORMAT_SWIZZLE_0:
+ result |= R300_TX_FORMAT_ZERO << swizzle_shift[i];
+ break;
+ case UTIL_FORMAT_SWIZZLE_1:
+ result |= R300_TX_FORMAT_ONE << swizzle_shift[i];
+ break;
+ default:
+ return ~0; /* Unsupported. */
+ }
+ }
+
+ /* Compressed formats. */
+ if (desc->layout == UTIL_FORMAT_LAYOUT_DXT) {
+ switch (format) {
+ case PIPE_FORMAT_DXT1_RGB:
+ case PIPE_FORMAT_DXT1_RGBA:
+ case PIPE_FORMAT_DXT1_SRGB:
+ case PIPE_FORMAT_DXT1_SRGBA:
+ return R300_TX_FORMAT_DXT1 | result;
+ case PIPE_FORMAT_DXT3_RGBA:
+ case PIPE_FORMAT_DXT3_SRGBA:
+ return R300_TX_FORMAT_DXT3 | result;
+ case PIPE_FORMAT_DXT5_RGBA:
+ case PIPE_FORMAT_DXT5_SRGBA:
+ return R300_TX_FORMAT_DXT5 | result;
+ default:
+ return ~0; /* Unsupported/unknown. */
+ }
+ }
+
+ /* Get the number of components. */
+ for (i = 0; i < 4; i++) {
+ if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
+ ++components;
+ }
+ }
+
+ /* Add sign. */
+ for (i = 0; i < components; i++) {
+ if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
+ result |= sign_bit[i];
+ }
+ }
+
+ /* See whether the components are of the same size. */
+ for (i = 1; i < components; i++) {
+ uniform = uniform && desc->channel[0].size == desc->channel[i].size;
+ }
+
+ /* Non-uniform formats. */
+ if (!uniform) {
+ switch (components) {
+ case 3:
+ if (desc->channel[0].size == 5 &&
+ desc->channel[1].size == 6 &&
+ desc->channel[2].size == 5) {
+ return R300_TX_FORMAT_Z5Y6X5 | result;
+ }
+ if (desc->channel[0].size == 5 &&
+ desc->channel[1].size == 5 &&
+ desc->channel[2].size == 6) {
+ return R300_TX_FORMAT_Z6Y5X5 | result;
+ }
+ return ~0; /* Unsupported/unknown. */
+
+ case 4:
+ if (desc->channel[0].size == 5 &&
+ desc->channel[1].size == 5 &&
+ desc->channel[2].size == 5 &&
+ desc->channel[3].size == 1) {
+ return R300_TX_FORMAT_W1Z5Y5X5 | result;
+ }
+ if (desc->channel[0].size == 10 &&
+ desc->channel[1].size == 10 &&
+ desc->channel[2].size == 10 &&
+ desc->channel[3].size == 2) {
+ return R300_TX_FORMAT_W2Z10Y10X10 | result;
+ }
+ }
+ return ~0; /* Unsupported/unknown. */
+ }
+
+ /* And finally, uniform formats. */
+ switch (desc->channel[0].type) {
+ case UTIL_FORMAT_TYPE_UNSIGNED:
+ case UTIL_FORMAT_TYPE_SIGNED:
+ if (!desc->channel[0].normalized &&
+ desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
+ return ~0;
+ }
+
+ switch (desc->channel[0].size) {
+ case 4:
+ switch (components) {
+ case 2:
+ return R300_TX_FORMAT_Y4X4 | result;
+ case 4:
+ return R300_TX_FORMAT_W4Z4Y4X4 | result;
+ }
+ return ~0;
+
+ case 8:
+ switch (components) {
+ case 1:
+ return R300_TX_FORMAT_X8 | result;
+ case 2:
+ return R300_TX_FORMAT_Y8X8 | result;
+ case 4:
+ return R300_TX_FORMAT_W8Z8Y8X8 | result;
+ }
+ return ~0;
+
+ case 16:
+ switch (components) {
+ case 1:
+ return R300_TX_FORMAT_X16 | result;
+ case 2:
+ return R300_TX_FORMAT_Y16X16 | result;
+ case 4:
+ return R300_TX_FORMAT_W16Z16Y16X16 | result;
+ }
+ }
+ return ~0;
+
+/* XXX Enable float textures here. */
+#if 0
+ case UTIL_FORMAT_TYPE_FLOAT:
+ switch (desc->channel[0].size) {
+ case 16:
+ switch (components) {
+ case 1:
+ return R300_TX_FORMAT_16F | result;
+ case 2:
+ return R300_TX_FORMAT_16F_16F | result;
+ case 4:
+ return R300_TX_FORMAT_16F_16F_16F_16F | result;
+ }
+ return ~0;
+
+ case 32:
+ switch (components) {
+ case 1:
+ return R300_TX_FORMAT_32F | result;
+ case 2:
+ return R300_TX_FORMAT_32F_32F | result;
+ case 4:
+ return R300_TX_FORMAT_32F_32F_32F_32F | result;
+ }
+ }
+#endif
+ }
+
+ return ~0; /* Unsupported/unknown. */
+}
+
+boolean r300_is_sampler_format_supported(enum pipe_format format)
+{
+ return r300_translate_texformat(format) != ~0;
+}
+
static void r300_setup_texture_state(struct r300_screen* screen, struct r300_texture* tex)
{
struct r300_texture_state* state = &tex->state;
struct pipe_texture *tex,
enum pipe_format new_format);
-/* Translate a pipe_format into a useful texture format for sampling.
- *
- * R300_EASY_TX_FORMAT swizzles the texture.
- * Note the signature of R300_EASY_TX_FORMAT:
- * R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
- *
- * The FORMAT specifies how the texture sampler will treat the texture, and
- * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
-static INLINE uint32_t r300_translate_texformat(enum pipe_format format)
-{
- uint32_t result = 0;
- const struct util_format_description *desc;
- unsigned components = 0, i;
- boolean uniform = TRUE;
- const uint32_t swizzle_shift[4] = {
- R300_TX_FORMAT_R_SHIFT,
- R300_TX_FORMAT_G_SHIFT,
- R300_TX_FORMAT_B_SHIFT,
- R300_TX_FORMAT_A_SHIFT
- };
- const uint32_t sign_bit[4] = {
- R300_TX_FORMAT_SIGNED_X,
- R300_TX_FORMAT_SIGNED_Y,
- R300_TX_FORMAT_SIGNED_Z,
- R300_TX_FORMAT_SIGNED_W,
- };
-
- desc = util_format_description(format);
-
- /* Colorspace (return non-RGB formats directly). */
- switch (desc->colorspace) {
- /* Depth stencil formats. */
- case UTIL_FORMAT_COLORSPACE_ZS:
- switch (format) {
- case PIPE_FORMAT_Z16_UNORM:
- return R300_EASY_TX_FORMAT(X, X, X, X, X16);
- case PIPE_FORMAT_Z24X8_UNORM:
- case PIPE_FORMAT_Z24S8_UNORM:
- return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
- default:
- return ~0; /* Unsupported. */
- }
-
- /* YUV formats. */
- case UTIL_FORMAT_COLORSPACE_YUV:
- result |= R300_TX_FORMAT_YUV_TO_RGB;
-
- switch (format) {
- case PIPE_FORMAT_YCBCR:
- return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
- case PIPE_FORMAT_YCBCR_REV:
- return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
- default:
- return ~0; /* Unsupported/unknown. */
- }
-
- /* Add gamma correction. */
- case UTIL_FORMAT_COLORSPACE_SRGB:
- result |= R300_TX_FORMAT_GAMMA;
- break;
-
- default:;
- }
-
- /* Add swizzle. */
- for (i = 0; i < 4; i++) {
- switch (desc->swizzle[i]) {
- case UTIL_FORMAT_SWIZZLE_X:
- case UTIL_FORMAT_SWIZZLE_NONE:
- result |= R300_TX_FORMAT_X << swizzle_shift[i];
- break;
- case UTIL_FORMAT_SWIZZLE_Y:
- result |= R300_TX_FORMAT_Y << swizzle_shift[i];
- break;
- case UTIL_FORMAT_SWIZZLE_Z:
- result |= R300_TX_FORMAT_Z << swizzle_shift[i];
- break;
- case UTIL_FORMAT_SWIZZLE_W:
- result |= R300_TX_FORMAT_W << swizzle_shift[i];
- break;
- case UTIL_FORMAT_SWIZZLE_0:
- result |= R300_TX_FORMAT_ZERO << swizzle_shift[i];
- break;
- case UTIL_FORMAT_SWIZZLE_1:
- result |= R300_TX_FORMAT_ONE << swizzle_shift[i];
- break;
- default:
- return ~0; /* Unsupported. */
- }
- }
-
- /* Compressed formats. */
- if (desc->layout == UTIL_FORMAT_LAYOUT_DXT) {
- switch (format) {
- case PIPE_FORMAT_DXT1_RGB:
- case PIPE_FORMAT_DXT1_RGBA:
- case PIPE_FORMAT_DXT1_SRGB:
- case PIPE_FORMAT_DXT1_SRGBA:
- return R300_TX_FORMAT_DXT1 | result;
- case PIPE_FORMAT_DXT3_RGBA:
- case PIPE_FORMAT_DXT3_SRGBA:
- return R300_TX_FORMAT_DXT3 | result;
- case PIPE_FORMAT_DXT5_RGBA:
- case PIPE_FORMAT_DXT5_SRGBA:
- return R300_TX_FORMAT_DXT5 | result;
- default:
- return ~0; /* Unsupported/unknown. */
- }
- }
-
- /* Get the number of components. */
- for (i = 0; i < 4; i++) {
- if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
- ++components;
- }
- }
-
- /* Add sign. */
- for (i = 0; i < components; i++) {
- if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
- result |= sign_bit[i];
- }
- }
-
- /* See whether the components are of the same size. */
- for (i = 1; i < components; i++) {
- uniform = uniform && desc->channel[0].size == desc->channel[i].size;
- }
-
- /* Non-uniform formats. */
- if (!uniform) {
- switch (components) {
- case 3:
- if (desc->channel[0].size == 5 &&
- desc->channel[1].size == 6 &&
- desc->channel[2].size == 5) {
- return R300_TX_FORMAT_Z5Y6X5 | result;
- }
- if (desc->channel[0].size == 5 &&
- desc->channel[1].size == 5 &&
- desc->channel[2].size == 6) {
- return R300_TX_FORMAT_Z6Y5X5 | result;
- }
- return ~0; /* Unsupported/unknown. */
-
- case 4:
- if (desc->channel[0].size == 5 &&
- desc->channel[1].size == 5 &&
- desc->channel[2].size == 5 &&
- desc->channel[3].size == 1) {
- return R300_TX_FORMAT_W1Z5Y5X5 | result;
- }
- if (desc->channel[0].size == 10 &&
- desc->channel[1].size == 10 &&
- desc->channel[2].size == 10 &&
- desc->channel[3].size == 2) {
- return R300_TX_FORMAT_W2Z10Y10X10 | result;
- }
- }
- return ~0; /* Unsupported/unknown. */
- }
-
- /* And finally, uniform formats. */
- switch (desc->channel[0].type) {
- case UTIL_FORMAT_TYPE_UNSIGNED:
- case UTIL_FORMAT_TYPE_SIGNED:
- if (!desc->channel[0].normalized &&
- desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
- return ~0;
- }
-
- switch (desc->channel[0].size) {
- case 4:
- switch (components) {
- case 2:
- return R300_TX_FORMAT_Y4X4 | result;
- case 4:
- return R300_TX_FORMAT_W4Z4Y4X4 | result;
- }
- return ~0;
-
- case 8:
- switch (components) {
- case 1:
- return R300_TX_FORMAT_X8 | result;
- case 2:
- return R300_TX_FORMAT_Y8X8 | result;
- case 4:
- return R300_TX_FORMAT_W8Z8Y8X8 | result;
- }
- return ~0;
-
- case 16:
- switch (components) {
- case 1:
- return R300_TX_FORMAT_X16 | result;
- case 2:
- return R300_TX_FORMAT_Y16X16 | result;
- case 4:
- return R300_TX_FORMAT_W16Z16Y16X16 | result;
- }
- }
- return ~0;
-
-/* XXX Enable float textures here. */
-#if 0
- case UTIL_FORMAT_TYPE_FLOAT:
- switch (desc->channel[0].size) {
- case 16:
- switch (components) {
- case 1:
- return R300_TX_FORMAT_16F | result;
- case 2:
- return R300_TX_FORMAT_16F_16F | result;
- case 4:
- return R300_TX_FORMAT_16F_16F_16F_16F | result;
- }
- return ~0;
-
- case 32:
- switch (components) {
- case 1:
- return R300_TX_FORMAT_32F | result;
- case 2:
- return R300_TX_FORMAT_32F_32F | result;
- case 4:
- return R300_TX_FORMAT_32F_32F_32F_32F | result;
- }
- }
-#endif
- }
-
- return ~0; /* Unsupported/unknown. */
-}
+boolean r300_is_sampler_format_supported(enum pipe_format format);
struct r300_video_surface
{
projects / mesa.git / commitdiff