diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.1/src/egl/main/eglconfig.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.1/src/egl/main/eglconfig.c | 577 |
1 files changed, 577 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.1/src/egl/main/eglconfig.c b/nx-X11/extras/Mesa_6.4.1/src/egl/main/eglconfig.c new file mode 100644 index 000000000..9f3d3ad27 --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.1/src/egl/main/eglconfig.c @@ -0,0 +1,577 @@ +/** + * EGL Configuration (pixel format) functions. + */ + + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <assert.h> +#include "eglconfig.h" +#include "egldisplay.h" +#include "egldriver.h" +#include "eglglobals.h" + + +#define MIN2(A, B) (((A) < (B)) ? (A) : (B)) + + +/** + * Convert an _EGLConfig to a __GLcontextModes object. + * NOTE: This routine may be incomplete - we're only making sure that + * the fields needed by Mesa (for _mesa_create_context/framebuffer) are + * set correctly. + */ +void +_eglConfigToContextModesRec(const _EGLConfig *config, __GLcontextModes *mode) +{ + memset(mode, 0, sizeof(*mode)); + + mode->rgbMode = GL_TRUE; /* no color index */ + mode->colorIndexMode = GL_FALSE; + mode->doubleBufferMode = GL_TRUE; /* always DB for now */ + mode->stereoMode = GL_FALSE; + + mode->redBits = GET_CONFIG_ATTRIB(config, EGL_RED_SIZE); + mode->greenBits = GET_CONFIG_ATTRIB(config, EGL_GREEN_SIZE); + mode->blueBits = GET_CONFIG_ATTRIB(config, EGL_BLUE_SIZE); + mode->alphaBits = GET_CONFIG_ATTRIB(config, EGL_ALPHA_SIZE); + mode->rgbBits = GET_CONFIG_ATTRIB(config, EGL_BUFFER_SIZE); + + /* no rgba masks - fix? */ + + mode->depthBits = GET_CONFIG_ATTRIB(config, EGL_DEPTH_SIZE); + mode->haveDepthBuffer = mode->depthBits > 0; + + mode->stencilBits = GET_CONFIG_ATTRIB(config, EGL_STENCIL_SIZE); + mode->haveStencilBuffer = mode->stencilBits > 0; + + /* no accum */ + + mode->level = GET_CONFIG_ATTRIB(config, EGL_LEVEL); + mode->samples = GET_CONFIG_ATTRIB(config, EGL_SAMPLES); + mode->sampleBuffers = GET_CONFIG_ATTRIB(config, EGL_SAMPLE_BUFFERS); + + /* surface type - not really needed */ + mode->visualType = GLX_TRUE_COLOR; + mode->renderType = GLX_RGBA_BIT; +} + + +void +_eglSetConfigAttrib(_EGLConfig *config, EGLint attr, EGLint val) +{ + assert(attr >= FIRST_ATTRIB); + assert(attr < FIRST_ATTRIB + MAX_ATTRIBS); + config->Attrib[attr - FIRST_ATTRIB] = val; +} + + +/** + * Init the given _EGLconfig to default values. + * \param id the configuration's ID. + */ +void +_eglInitConfig(_EGLConfig *config, EGLint id) +{ + memset(config, 0, sizeof(*config)); + config->Handle = id; + _eglSetConfigAttrib(config, EGL_CONFIG_ID, id); + _eglSetConfigAttrib(config, EGL_BIND_TO_TEXTURE_RGB, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_BIND_TO_TEXTURE_RGBA, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_CONFIG_CAVEAT, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_NATIVE_RENDERABLE, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_NATIVE_VISUAL_TYPE, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_MIN_SWAP_INTERVAL, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_MAX_SWAP_INTERVAL, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_SURFACE_TYPE, + EGL_SCREEN_BIT_MESA | EGL_PBUFFER_BIT | + EGL_PIXMAP_BIT | EGL_WINDOW_BIT); + _eglSetConfigAttrib(config, EGL_TRANSPARENT_TYPE, EGL_NONE); + _eglSetConfigAttrib(config, EGL_TRANSPARENT_RED_VALUE, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_TRANSPARENT_GREEN_VALUE, EGL_DONT_CARE); + _eglSetConfigAttrib(config, EGL_TRANSPARENT_BLUE_VALUE, EGL_DONT_CARE); +} + + +/** + * Given an EGLConfig handle, return the corresponding _EGLConfig object. + */ +_EGLConfig * +_eglLookupConfig(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config) +{ + EGLint i; + _EGLDisplay *disp = _eglLookupDisplay(dpy); + for (i = 0; i < disp->NumConfigs; i++) { + if (disp->Configs[i].Handle == config) { + return disp->Configs + i; + } + } + return NULL; +} + + +/** + * Add the given _EGLConifg to the given display. + */ +_EGLConfig * +_eglAddConfig(_EGLDisplay *display, const _EGLConfig *config) +{ + _EGLConfig *newConfigs; + EGLint n; + + n = display->NumConfigs; + + newConfigs = (_EGLConfig *) realloc(display->Configs, + (n + 1) * sizeof(_EGLConfig)); + if (newConfigs) { + display->Configs = newConfigs; + display->Configs[n] = *config; /* copy struct */ + display->Configs[n].Handle = n; + display->NumConfigs++; + return display->Configs + n; + } + else { + return NULL; + } +} + + +/** + * Parse the attrib_list to fill in the fields of the given _egl_config + * Return EGL_FALSE if any errors, EGL_TRUE otherwise. + */ +EGLBoolean +_eglParseConfigAttribs(_EGLConfig *config, const EGLint *attrib_list) +{ + EGLint i; + + /* XXX set all config attribs to EGL_DONT_CARE */ + + for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) { + EGLint k = attrib_list[i] - FIRST_ATTRIB; + if (k >= 0 && k < MAX_ATTRIBS) { + config->Attrib[k] = attrib_list[++i]; + } + else { + _eglError(EGL_BAD_ATTRIBUTE, "eglChooseConfig"); + return EGL_FALSE; + } + } + return EGL_TRUE; +} + + +#define EXACT 1 +#define ATLEAST 2 +#define MASK 3 +#define SMALLER 4 +#define SPECIAL 5 +#define NONE 6 + +struct sort_info { + EGLint Attribute; + EGLint MatchCriteria; + EGLint SortOrder; +}; + +/* This encodes the info from Table 3.5 of the EGL spec, ordered by + * Sort Priority. + */ +static struct sort_info SortInfo[] = { + { EGL_CONFIG_CAVEAT, EXACT, SPECIAL }, + { EGL_RED_SIZE, ATLEAST, SPECIAL }, + { EGL_GREEN_SIZE, ATLEAST, SPECIAL }, + { EGL_BLUE_SIZE, ATLEAST, SPECIAL }, + { EGL_ALPHA_SIZE, ATLEAST, SPECIAL }, + { EGL_BUFFER_SIZE, ATLEAST, SMALLER }, + { EGL_SAMPLE_BUFFERS, ATLEAST, SMALLER }, + { EGL_SAMPLES, ATLEAST, SMALLER }, + { EGL_DEPTH_SIZE, ATLEAST, SMALLER }, + { EGL_STENCIL_SIZE, ATLEAST, SMALLER }, + { EGL_NATIVE_VISUAL_TYPE, EXACT, SPECIAL }, + { EGL_CONFIG_ID, EXACT, SMALLER }, + { EGL_BIND_TO_TEXTURE_RGB, EXACT, NONE }, + { EGL_BIND_TO_TEXTURE_RGBA, EXACT, NONE }, + { EGL_LEVEL, EXACT, NONE }, + { EGL_NATIVE_RENDERABLE, EXACT, NONE }, + { EGL_MAX_SWAP_INTERVAL, EXACT, NONE }, + { EGL_MIN_SWAP_INTERVAL, EXACT, NONE }, + { EGL_SURFACE_TYPE, MASK, NONE }, + { EGL_TRANSPARENT_TYPE, EXACT, NONE }, + { EGL_TRANSPARENT_RED_VALUE, EXACT, NONE }, + { EGL_TRANSPARENT_GREEN_VALUE, EXACT, NONE }, + { EGL_TRANSPARENT_BLUE_VALUE, EXACT, NONE }, + { 0, 0, 0 } +}; + + +/** + * Return EGL_TRUE if the attributes of c meet or exceed the minimums + * specified by min. + */ +EGLBoolean +_eglConfigQualifies(const _EGLConfig *c, const _EGLConfig *min) +{ + EGLint i; + for (i = 0; SortInfo[i].Attribute != 0; i++) { + const EGLint mv = GET_CONFIG_ATTRIB(min, SortInfo[i].Attribute); + if (mv != EGL_DONT_CARE) { + const EGLint cv = GET_CONFIG_ATTRIB(c, SortInfo[i].Attribute); + if (SortInfo[i].MatchCriteria == EXACT) { + if (cv != mv) { + return EGL_FALSE; + } + } + else if (SortInfo[i].MatchCriteria == ATLEAST) { + if (cv < mv) { + return EGL_FALSE; + } + } + else { + assert(SortInfo[i].MatchCriteria == MASK); + if ((mv & cv) != mv) { + return EGL_FALSE; + } + } + } + } + return EGL_TRUE; +} + + +/** + * Compare configs 'a' and 'b' and return -1 if a belongs before b, + * 1 if a belongs after b, or 0 if they're equal. + */ +EGLint +_eglCompareConfigs(const _EGLConfig *a, const _EGLConfig *b) +{ + EGLint i; + for (i = 0; SortInfo[i].Attribute != 0; i++) { + const EGLint av = GET_CONFIG_ATTRIB(a, SortInfo[i].Attribute); + const EGLint bv = GET_CONFIG_ATTRIB(b, SortInfo[i].Attribute); + if (SortInfo[i].SortOrder == SMALLER) { + if (av < bv) + return -1; + else if (av > bv) + return 1; + /* else, continue examining attribute values */ + } + else if (SortInfo[i].SortOrder == SPECIAL) { + if (SortInfo[i].Attribute == EGL_CONFIG_CAVEAT) { + /* values are EGL_NONE, SLOW_CONFIG, or NON_CONFORMANT_CONFIG */ + if (av < bv) + return -1; + else if (av > bv) + return 1; + } + else if (SortInfo[i].Attribute == EGL_RED_SIZE || + SortInfo[i].Attribute == EGL_GREEN_SIZE || + SortInfo[i].Attribute == EGL_BLUE_SIZE || + SortInfo[i].Attribute == EGL_ALPHA_SIZE) { + if (av > bv) + return -1; + else if (av < bv) + return 1; + } + else { + assert(SortInfo[i].Attribute == EGL_NATIVE_VISUAL_TYPE); + if (av < bv) + return -1; + else if (av > bv) + return 1; + } + } + else { + assert(SortInfo[i].SortOrder == NONE); + /* continue examining attribute values */ + } + } + return 0; +} + + +/** + * Typical fallback routine for eglChooseConfig + */ +EGLBoolean +_eglChooseConfig(_EGLDriver *drv, EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + _EGLConfig criteria; + EGLint i; + + /* parse the attrib_list to initialize criteria */ + if (!_eglParseConfigAttribs(&criteria, attrib_list)) { + return EGL_FALSE; + } + + *num_config = 0; + for (i = 0; i < disp->NumConfigs; i++) { + const _EGLConfig *conf = disp->Configs + i; + if (_eglConfigQualifies(conf, &criteria)) { + if (*num_config < config_size) { + /* save */ + configs[*num_config] = conf->Handle; + (*num_config)++; + } + else { + break; + } + } + } + + /* XXX sort the list here */ + + return EGL_TRUE; +} + + +/** + * Fallback for eglGetConfigAttrib. + */ +EGLBoolean +_eglGetConfigAttrib(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value) +{ + const _EGLConfig *conf = _eglLookupConfig(drv, dpy, config); + const EGLint k = attribute - FIRST_ATTRIB; + if (k >= 0 && k < MAX_ATTRIBS) { + *value = conf->Attrib[k]; + return EGL_TRUE; + } + else { + _eglError(EGL_BAD_ATTRIBUTE, "eglGetConfigAttrib"); + return EGL_FALSE; + } +} + + +/** + * Fallback for eglGetConfigs. + */ +EGLBoolean +_eglGetConfigs(_EGLDriver *drv, EGLDisplay dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + + if (!drv->Initialized) { + _eglError(EGL_NOT_INITIALIZED, "eglGetConfigs"); + return EGL_FALSE; + } + + if (configs) { + EGLint i; + *num_config = MIN2(disp->NumConfigs, config_size); + for (i = 0; i < *num_config; i++) { + configs[i] = disp->Configs[i].Handle; + } + } else + *num_config = disp->NumConfigs; + + return EGL_TRUE; +} + + +/** + * Creates a set of \c __GLcontextModes that a driver will expose. + * + * A set of \c __GLcontextModes will be created based on the supplied + * parameters. The number of modes processed will be 2 * + * \c num_depth_stencil_bits * \c num_db_modes. + * + * For the most part, data is just copied from \c depth_bits, \c stencil_bits, + * \c db_modes, and \c visType into each \c __GLcontextModes element. + * However, the meanings of \c fb_format and \c fb_type require further + * explanation. The \c fb_format specifies which color components are in + * each pixel and what the default order is. For example, \c GL_RGB specifies + * that red, green, blue are available and red is in the "most significant" + * position and blue is in the "least significant". The \c fb_type specifies + * the bit sizes of each component and the actual ordering. For example, if + * \c GL_UNSIGNED_SHORT_5_6_5_REV is specified with \c GL_RGB, bits [15:11] + * are the blue value, bits [10:5] are the green value, and bits [4:0] are + * the red value. + * + * One sublte issue is the combination of \c GL_RGB or \c GL_BGR and either + * of the \c GL_UNSIGNED_INT_8_8_8_8 modes. The resulting mask values in the + * \c __GLcontextModes structure is \b identical to the \c GL_RGBA or + * \c GL_BGRA case, except the \c alphaMask is zero. This means that, as + * far as this routine is concerned, \c GL_RGB with \c GL_UNSIGNED_INT_8_8_8_8 + * still uses 32-bits. + * + * If in doubt, look at the tables used in the function. + * + * \param ptr_to_modes Pointer to a pointer to a linked list of + * \c __GLcontextModes. Upon completion, a pointer to + * the next element to be process will be stored here. + * If the function fails and returns \c GL_FALSE, this + * value will be unmodified, but some elements in the + * linked list may be modified. + * \param fb_format Format of the framebuffer. Currently only \c GL_RGB, + * \c GL_RGBA, \c GL_BGR, and \c GL_BGRA are supported. + * \param fb_type Type of the pixels in the framebuffer. Currently only + * \c GL_UNSIGNED_SHORT_5_6_5, + * \c GL_UNSIGNED_SHORT_5_6_5_REV, + * \c GL_UNSIGNED_INT_8_8_8_8, and + * \c GL_UNSIGNED_INT_8_8_8_8_REV are supported. + * \param depth_bits Array of depth buffer sizes to be exposed. + * \param stencil_bits Array of stencil buffer sizes to be exposed. + * \param num_depth_stencil_bits Number of entries in both \c depth_bits and + * \c stencil_bits. + * \param db_modes Array of buffer swap modes. If an element has a + * value of \c GLX_NONE, then it represents a + * single-buffered mode. Other valid values are + * \c GLX_SWAP_EXCHANGE_OML, \c GLX_SWAP_COPY_OML, and + * \c GLX_SWAP_UNDEFINED_OML. See the + * GLX_OML_swap_method extension spec for more details. + * \param num_db_modes Number of entries in \c db_modes. + * \param visType GLX visual type. Usually either \c GLX_TRUE_COLOR or + * \c GLX_DIRECT_COLOR. + * + * \returns + * \c GL_TRUE on success or \c GL_FALSE on failure. Currently the only + * cause of failure is a bad parameter (i.e., unsupported \c fb_format or + * \c fb_type). + * + * \todo + * There is currently no way to support packed RGB modes (i.e., modes with + * exactly 3 bytes per pixel) or floating-point modes. This could probably + * be done by creating some new, private enums with clever names likes + * \c GL_UNSIGNED_3BYTE_8_8_8, \c GL_4FLOAT_32_32_32_32, + * \c GL_4HALF_16_16_16_16, etc. We can cross that bridge when we come to it. + */ +GLboolean +_eglFillInConfigs(_EGLConfig * configs, + GLenum fb_format, GLenum fb_type, + const u_int8_t * depth_bits, const u_int8_t * stencil_bits, + unsigned num_depth_stencil_bits, + const GLenum * db_modes, unsigned num_db_modes, + int visType) { + static const u_int8_t bits_table[3][4] = { + /* R G B A */ + { 5, 6, 5, 0 }, /* Any GL_UNSIGNED_SHORT_5_6_5 */ + { 8, 8, 8, 0 }, /* Any RGB with any GL_UNSIGNED_INT_8_8_8_8 */ + { 8, 8, 8, 8 } /* Any RGBA with any GL_UNSIGNED_INT_8_8_8_8 */ + }; + + /* The following arrays are all indexed by the fb_type masked with 0x07. + * Given the four supported fb_type values, this results in valid array + * indices of 3, 4, 5, and 7. + */ + static const u_int32_t masks_table_rgb[8][4] = { + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000F800, 0x000007E0, 0x0000001F, 0x00000000}, /* 5_6_5 */ + {0x0000001F, 0x000007E0, 0x0000F800, 0x00000000}, /* 5_6_5_REV */ + {0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000}, /* 8_8_8_8 */ + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000} /* 8_8_8_8_REV */ + }; + + static const u_int32_t masks_table_rgba[8][4] = { + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000F800, 0x000007E0, 0x0000001F, 0x00000000}, /* 5_6_5 */ + {0x0000001F, 0x000007E0, 0x0000F800, 0x00000000}, /* 5_6_5_REV */ + {0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF}, /* 8_8_8_8 */ + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000}, /* 8_8_8_8_REV */ + }; + + static const u_int32_t masks_table_bgr[8][4] = { + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000001F, 0x000007E0, 0x0000F800, 0x00000000}, /* 5_6_5 */ + {0x0000F800, 0x000007E0, 0x0000001F, 0x00000000}, /* 5_6_5_REV */ + {0x0000FF00, 0x00FF0000, 0xFF000000, 0x00000000}, /* 8_8_8_8 */ + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000}, /* 8_8_8_8_REV */ + }; + + static const u_int32_t masks_table_bgra[8][4] = { + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000001F, 0x000007E0, 0x0000F800, 0x00000000}, /* 5_6_5 */ + {0x0000F800, 0x000007E0, 0x0000001F, 0x00000000}, /* 5_6_5_REV */ + {0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF}, /* 8_8_8_8 */ + {0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000}, /* 8_8_8_8_REV */ + }; + + static const u_int8_t bytes_per_pixel[8] = { + 0, 0, 0, 2, 2, 4, 0, 4 + }; + + const u_int8_t * bits; + const u_int32_t * masks; + const int index = fb_type & 0x07; + _EGLConfig *config; + unsigned i; + unsigned j; + unsigned k; + + if ( bytes_per_pixel[index] == 0 ) { + fprintf(stderr, "[%s:%u] Framebuffer type 0x%04x has 0 bytes per pixel.\n", + __FUNCTION__, __LINE__, fb_type); + return GL_FALSE; + } + + /* Valid types are GL_UNSIGNED_SHORT_5_6_5 and GL_UNSIGNED_INT_8_8_8_8 and + * the _REV versions. + * + * Valid formats are GL_RGBA, GL_RGB, and GL_BGRA. + */ + switch ( fb_format ) { + case GL_RGB: + bits = (bytes_per_pixel[index] == 2) ? bits_table[0] : bits_table[1]; + masks = masks_table_rgb[index]; + break; + + case GL_RGBA: + bits = (bytes_per_pixel[index] == 2) ? bits_table[0] : bits_table[2]; + masks = masks_table_rgba[index]; + break; + + case GL_BGR: + bits = (bytes_per_pixel[index] == 2) ? bits_table[0] : bits_table[1]; + masks = masks_table_bgr[index]; + break; + + case GL_BGRA: + bits = (bytes_per_pixel[index] == 2) ? bits_table[0] : bits_table[2]; + masks = masks_table_bgra[index]; + break; + + default: + fprintf(stderr, "[%s:%u] Framebuffer format 0x%04x is not GL_RGB, GL_RGBA, GL_BGR, or GL_BGRA.\n", + __FUNCTION__, __LINE__, fb_format); + return GL_FALSE; + } + + config = configs; + for (k = 0; k < num_depth_stencil_bits; k++) { + for (i = 0; i < num_db_modes; i++) { + for (j = 0; j < 2; j++) { + _eglSetConfigAttrib(config, EGL_RED_SIZE, bits[0]); + _eglSetConfigAttrib(config, EGL_GREEN_SIZE, bits[1]); + _eglSetConfigAttrib(config, EGL_BLUE_SIZE, bits[2]); + _eglSetConfigAttrib(config, EGL_ALPHA_SIZE, bits[3]); + _eglSetConfigAttrib(config, EGL_BUFFER_SIZE, + bits[0] + bits[1] + bits[2] + bits[3]); + + _eglSetConfigAttrib(config, EGL_STENCIL_SIZE, stencil_bits[k]); + _eglSetConfigAttrib(config, EGL_DEPTH_SIZE, depth_bits[i]); + + _eglSetConfigAttrib(config, EGL_SURFACE_TYPE, EGL_SCREEN_BIT_MESA | + EGL_PBUFFER_BIT | EGL_PIXMAP_BIT | EGL_WINDOW_BIT); + + config++; + } + } + } + return GL_TRUE; +} |