diff options
Diffstat (limited to 'mesalib/src/mesa/main/glformats.c')
| -rw-r--r-- | mesalib/src/mesa/main/glformats.c | 568 |
1 files changed, 557 insertions, 11 deletions
diff --git a/mesalib/src/mesa/main/glformats.c b/mesalib/src/mesa/main/glformats.c index 00478f989..4e05229cf 100644 --- a/mesalib/src/mesa/main/glformats.c +++ b/mesalib/src/mesa/main/glformats.c @@ -27,7 +27,205 @@ #include "context.h" #include "glformats.h" +#include "formats.h" +#include "enums.h" + +enum { + ZERO = 4, + ONE = 5 +}; + +enum { + IDX_LUMINANCE = 0, + IDX_ALPHA, + IDX_INTENSITY, + IDX_LUMINANCE_ALPHA, + IDX_RGB, + IDX_RGBA, + IDX_RED, + IDX_GREEN, + IDX_BLUE, + IDX_BGR, + IDX_BGRA, + IDX_ABGR, + IDX_RG, + MAX_IDX +}; + +#define MAP1(x) MAP4(x, ZERO, ZERO, ZERO) +#define MAP2(x,y) MAP4(x, y, ZERO, ZERO) +#define MAP3(x,y,z) MAP4(x, y, z, ZERO) +#define MAP4(x,y,z,w) { x, y, z, w, ZERO, ONE } + +static const struct { + GLubyte format_idx; + GLubyte to_rgba[6]; + GLubyte from_rgba[6]; +} mappings[MAX_IDX] = +{ + { + IDX_LUMINANCE, + MAP4(0,0,0,ONE), + MAP1(0) + }, + + { + IDX_ALPHA, + MAP4(ZERO, ZERO, ZERO, 0), + MAP1(3) + }, + + { + IDX_INTENSITY, + MAP4(0, 0, 0, 0), + MAP1(0), + }, + + { + IDX_LUMINANCE_ALPHA, + MAP4(0,0,0,1), + MAP2(0,3) + }, + + { + IDX_RGB, + MAP4(0,1,2,ONE), + MAP3(0,1,2) + }, + + { + IDX_RGBA, + MAP4(0,1,2,3), + MAP4(0,1,2,3), + }, + + { + IDX_RED, + MAP4(0, ZERO, ZERO, ONE), + MAP1(0), + }, + + { + IDX_GREEN, + MAP4(ZERO, 0, ZERO, ONE), + MAP1(1), + }, + + { + IDX_BLUE, + MAP4(ZERO, ZERO, 0, ONE), + MAP1(2), + }, + + { + IDX_BGR, + MAP4(2,1,0,ONE), + MAP3(2,1,0) + }, + + { + IDX_BGRA, + MAP4(2,1,0,3), + MAP4(2,1,0,3) + }, + + { + IDX_ABGR, + MAP4(3,2,1,0), + MAP4(3,2,1,0) + }, + + { + IDX_RG, + MAP4(0, 1, ZERO, ONE), + MAP2(0, 1) + }, +}; + +/** + * Convert a GL image format enum to an IDX_* value (see above). + */ +static int +get_map_idx(GLenum value) +{ + switch (value) { + case GL_LUMINANCE: + case GL_LUMINANCE_INTEGER_EXT: + return IDX_LUMINANCE; + case GL_ALPHA: + case GL_ALPHA_INTEGER: + return IDX_ALPHA; + case GL_INTENSITY: + return IDX_INTENSITY; + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + return IDX_LUMINANCE_ALPHA; + case GL_RGB: + case GL_RGB_INTEGER: + return IDX_RGB; + case GL_RGBA: + case GL_RGBA_INTEGER: + return IDX_RGBA; + case GL_RED: + case GL_RED_INTEGER: + return IDX_RED; + case GL_GREEN: + return IDX_GREEN; + case GL_BLUE: + return IDX_BLUE; + case GL_BGR: + case GL_BGR_INTEGER: + return IDX_BGR; + case GL_BGRA: + case GL_BGRA_INTEGER: + return IDX_BGRA; + case GL_ABGR_EXT: + return IDX_ABGR; + case GL_RG: + case GL_RG_INTEGER: + return IDX_RG; + default: + _mesa_problem(NULL, "Unexpected inFormat %s", + _mesa_lookup_enum_by_nr(value)); + return 0; + } +} +/** + * When promoting texture formats (see below) we need to compute the + * mapping of dest components back to source components. + * This function does that. + * \param inFormat the incoming format of the texture + * \param outFormat the final texture format + * \return map[6] a full 6-component map + */ +void +_mesa_compute_component_mapping(GLenum inFormat, GLenum outFormat, GLubyte *map) +{ + const int inFmt = get_map_idx(inFormat); + const int outFmt = get_map_idx(outFormat); + const GLubyte *in2rgba = mappings[inFmt].to_rgba; + const GLubyte *rgba2out = mappings[outFmt].from_rgba; + int i; + + for (i = 0; i < 4; i++) + map[i] = in2rgba[rgba2out[i]]; + + map[ZERO] = ZERO; + map[ONE] = ONE; + +#if 0 + printf("from %x/%s to %x/%s map %d %d %d %d %d %d\n", + inFormat, _mesa_lookup_enum_by_nr(inFormat), + outFormat, _mesa_lookup_enum_by_nr(outFormat), + map[0], + map[1], + map[2], + map[3], + map[4], + map[5]); +#endif +} /** * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise. @@ -93,6 +291,7 @@ _mesa_sizeof_type(GLenum type) case GL_DOUBLE: return sizeof(GLdouble); case GL_HALF_FLOAT_ARB: + case GL_HALF_FLOAT_OES: return sizeof(GLhalfARB); case GL_FIXED: return sizeof(GLfixed); @@ -125,6 +324,7 @@ _mesa_sizeof_packed_type(GLenum type) case GL_INT: return sizeof(GLint); case GL_HALF_FLOAT_ARB: + case GL_HALF_FLOAT_OES: return sizeof(GLhalfARB); case GL_FLOAT: return sizeof(GLfloat); @@ -241,6 +441,7 @@ _mesa_bytes_per_pixel(GLenum format, GLenum type) case GL_FLOAT: return comps * sizeof(GLfloat); case GL_HALF_FLOAT_ARB: + case GL_HALF_FLOAT_OES: return comps * sizeof(GLhalfARB); case GL_UNSIGNED_BYTE_3_3_2: case GL_UNSIGNED_BYTE_2_3_3_REV: @@ -258,18 +459,29 @@ _mesa_bytes_per_pixel(GLenum format, GLenum type) return -1; /* error */ case GL_UNSIGNED_SHORT_4_4_4_4: case GL_UNSIGNED_SHORT_4_4_4_4_REV: + if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT || + format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) + return sizeof(GLushort); + else + return -1; case GL_UNSIGNED_SHORT_5_5_5_1: case GL_UNSIGNED_SHORT_1_5_5_5_REV: - if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT || + if (format == GL_RGBA || format == GL_BGRA || format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) return sizeof(GLushort); else return -1; case GL_UNSIGNED_INT_8_8_8_8: case GL_UNSIGNED_INT_8_8_8_8_REV: + if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT || + format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT || + format == GL_RGB) + return sizeof(GLuint); + else + return -1; 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 || + if (format == GL_RGBA || format == GL_BGRA || format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT || format == GL_RGB) return sizeof(GLuint); @@ -1403,12 +1615,8 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx, 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) { @@ -1418,6 +1626,20 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx, ctx->Extensions.ARB_texture_rgb10_a2ui) { break; /* OK */ } + return GL_INVALID_OPERATION; + + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_1_5_5_5_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) { + break; /* OK */ + } + if ((format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) && + ctx->Extensions.ARB_texture_rgb10_a2ui) { + break; /* OK */ + } if (type == GL_UNSIGNED_INT_2_10_10_10_REV && format == GL_RGB && ctx->API == API_OPENGLES2) { break; /* OK by GL_EXT_texture_type_2_10_10_10_REV */ @@ -1448,6 +1670,18 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx, } return GL_NO_ERROR; + case GL_HALF_FLOAT_OES: + switch (format) { + case GL_RGBA: + case GL_RGB: + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE: + case GL_ALPHA: + return GL_NO_ERROR; + default: + return GL_INVALID_OPERATION; + } + default: ; /* fall-through */ } @@ -1561,7 +1795,6 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx, case GL_RGBA: case GL_BGRA: - case GL_ABGR_EXT: switch (type) { case GL_BYTE: case GL_UNSIGNED_BYTE: @@ -1584,6 +1817,25 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx, return GL_INVALID_ENUM; } + 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_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_HALF_FLOAT: + return GL_NO_ERROR; + default: + return GL_INVALID_ENUM; + } + case GL_YCBCR_MESA: if (!ctx->Extensions.MESA_ycbcr_texture) return GL_INVALID_ENUM; @@ -1782,7 +2034,8 @@ _mesa_es_error_check_format_and_type(GLenum format, GLenum type, * \return error code, or GL_NO_ERROR. */ GLenum -_mesa_es3_error_check_format_and_type(GLenum format, GLenum type, +_mesa_es3_error_check_format_and_type(const struct gl_context *ctx, + GLenum format, GLenum type, GLenum internalFormat) { switch (format) { @@ -1847,11 +2100,17 @@ _mesa_es3_error_check_format_and_type(GLenum format, GLenum type, case GL_RGBA16F: case GL_RGBA32F: 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; } @@ -1956,11 +2215,19 @@ _mesa_es3_error_check_format_and_type(GLenum format, GLenum type, case GL_R11F_G11F_B10F: case GL_RGB9_E5: 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: /* GL_EXT_texture_type_2_10_10_10_REV */ @@ -2200,10 +2467,289 @@ _mesa_es3_error_check_format_and_type(GLenum format, GLenum type, case GL_ALPHA: case GL_LUMINANCE: case GL_LUMINANCE_ALPHA: - if (type != GL_UNSIGNED_BYTE || format != internalFormat) - return GL_INVALID_OPERATION; - break; + switch (type) { + case GL_FLOAT: + if (ctx->Extensions.OES_texture_float && internalFormat == format) + break; + case GL_HALF_FLOAT_OES: + if (ctx->Extensions.OES_texture_half_float && internalFormat == format) + break; + default: + if (type != GL_UNSIGNED_BYTE || format != internalFormat) + return GL_INVALID_OPERATION; + } } 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) +{ + mesa_array_format array_format; + + 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); + + array_format = + MESA_ARRAY_FORMAT(type_size, is_signed, is_float, + normalized, num_channels, + swizzle[0], swizzle[1], swizzle[2], swizzle[3]); + + if (!_mesa_little_endian()) + array_format = _mesa_array_format_flip_channels(array_format); + + return array_format; + } + + /* 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; + 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; + 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; + 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; + 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; + 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; + break; + case GL_UNSIGNED_BYTE_3_3_2: + if (format == GL_RGB) + return MESA_FORMAT_B2G3R3_UNORM; + break; + case GL_UNSIGNED_BYTE_2_3_3_REV: + if (format == GL_RGB) + return MESA_FORMAT_R3G3B2_UNORM; + 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; + 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; + 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; + 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"); +} |