diff options
Diffstat (limited to 'src/egl/main/eglconfig.c')
| -rw-r--r-- | src/egl/main/eglconfig.c | 331 |
1 files changed, 318 insertions, 13 deletions
diff --git a/src/egl/main/eglconfig.c b/src/egl/main/eglconfig.c index 0fb7e260723..ff9a647a8fc 100644 --- a/src/egl/main/eglconfig.c +++ b/src/egl/main/eglconfig.c @@ -1,4 +1,5 @@ #include <stdlib.h> +#include <stdio.h> #include <string.h> #include <assert.h> #include "eglconfig.h" @@ -19,19 +20,19 @@ _eglInitConfig(_EGLConfig *config, EGLint id) { memset(config, 0, sizeof(*config)); config->Handle = id; - SET_CONFIG_ATTRIB(config, EGL_CONFIG_ID, id); - SET_CONFIG_ATTRIB(config, EGL_BIND_TO_TEXTURE_RGB, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_BIND_TO_TEXTURE_RGBA, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_CONFIG_CAVEAT, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_NATIVE_RENDERABLE, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_NATIVE_VISUAL_TYPE, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_MIN_SWAP_INTERVAL, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_MAX_SWAP_INTERVAL, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_SURFACE_TYPE, EGL_WINDOW_BIT); - SET_CONFIG_ATTRIB(config, EGL_TRANSPARENT_TYPE, EGL_NONE); - SET_CONFIG_ATTRIB(config, EGL_TRANSPARENT_RED_VALUE, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_TRANSPARENT_GREEN_VALUE, EGL_DONT_CARE); - SET_CONFIG_ATTRIB(config, EGL_TRANSPARENT_BLUE_VALUE, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_CONFIG_ID, id); + _eglSetConfigAtrib(config, EGL_BIND_TO_TEXTURE_RGB, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_BIND_TO_TEXTURE_RGBA, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_CONFIG_CAVEAT, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_NATIVE_RENDERABLE, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_NATIVE_VISUAL_TYPE, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_MIN_SWAP_INTERVAL, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_MAX_SWAP_INTERVAL, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_SURFACE_TYPE, EGL_WINDOW_BIT); + _eglSetConfigAtrib(config, EGL_TRANSPARENT_TYPE, EGL_NONE); + _eglSetConfigAtrib(config, EGL_TRANSPARENT_RED_VALUE, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_TRANSPARENT_GREEN_VALUE, EGL_DONT_CARE); + _eglSetConfigAtrib(config, EGL_TRANSPARENT_BLUE_VALUE, EGL_DONT_CARE); } @@ -77,6 +78,79 @@ _eglAddConfig(_EGLDisplay *display, const _EGLConfig *config) } +extern void +_eglSetConfigAtrib(_EGLConfig *config, EGLint attr, EGLint val) +{ + config->Attrib[attr - FIRST_ATTRIB] = val; + + switch (attr) { + case EGL_BUFFER_SIZE: + config->glmode.rgbBits = val; + break; + case EGL_ALPHA_SIZE: + config->glmode.alphaBits = val; + break; + case EGL_BLUE_SIZE: + config->glmode.blueBits = val; + break; + case EGL_GREEN_SIZE: + config->glmode.greenBits = val; + break; + case EGL_RED_SIZE: + config->glmode.redBits = val; + break; + case EGL_DEPTH_SIZE: + config->glmode.depthBits = val; + break; + case EGL_STENCIL_SIZE: + config->glmode.stencilBits = val; + break; + case EGL_CONFIG_CAVEAT: + break; + case EGL_CONFIG_ID: + break; + case EGL_LEVEL: + break; + case EGL_MAX_PBUFFER_HEIGHT: + break; + case EGL_MAX_PBUFFER_PIXELS: + break; + case EGL_MAX_PBUFFER_WIDTH: + break; + case EGL_NATIVE_RENDERABLE: + break; + case EGL_NATIVE_VISUAL_ID: + break; + case EGL_NATIVE_VISUAL_TYPE: + break; + case EGL_SAMPLES: + break; + case EGL_SAMPLE_BUFFERS: + break; + case EGL_SURFACE_TYPE: + break; + case EGL_TRANSPARENT_TYPE: + break; + case EGL_TRANSPARENT_BLUE_VALUE: + break; + case EGL_TRANSPARENT_GREEN_VALUE: + break; + case EGL_TRANSPARENT_RED_VALUE: + break; + case EGL_NONE: + break; + case EGL_BIND_TO_TEXTURE_RGB: + break; + case EGL_BIND_TO_TEXTURE_RGBA: + break; + case EGL_MIN_SWAP_INTERVAL: + break; + case EGL_MAX_SWAP_INTERVAL: + break; + default: + break; + } +} /** * Parse the attrib_list to fill in the fields of the given _egl_config @@ -310,3 +384,234 @@ _eglGetConfigs(_EGLDriver *drv, EGLDisplay dpy, EGLConfig *configs, EGLint confi } 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++) { + + _eglSetConfigAtrib(config, EGL_RED_SIZE, bits[0]); + _eglSetConfigAtrib(config, EGL_GREEN_SIZE, bits[1]); + _eglSetConfigAtrib(config, EGL_BLUE_SIZE, bits[2]); + _eglSetConfigAtrib(config, EGL_ALPHA_SIZE, bits[3]); + config->glmode.redMask = masks[0]; + config->glmode.greenMask = masks[1]; + config->glmode.blueMask = masks[2]; + config->glmode.alphaMask = masks[3]; + _eglSetConfigAtrib(config, EGL_BUFFER_SIZE, config->glmode.redBits + config->glmode.greenBits + + config->glmode.blueBits + config->glmode.alphaBits); + + config->glmode.accumRedBits = 16 * j; + config->glmode.accumGreenBits = 16 * j; + config->glmode.accumBlueBits = 16 * j; + config->glmode.accumAlphaBits = (masks[3] != 0) ? 16 * j : 0; + config->glmode.visualRating = (j == 0) ? GLX_NONE : GLX_SLOW_CONFIG; + + _eglSetConfigAtrib(config, EGL_STENCIL_SIZE, stencil_bits[k]); + _eglSetConfigAtrib(config, EGL_DEPTH_SIZE, depth_bits[k]); + + config->glmode.visualType = visType; + config->glmode.renderType = GLX_RGBA_BIT; + config->glmode.drawableType = GLX_WINDOW_BIT; + config->glmode.rgbMode = GL_TRUE; + + if (db_modes[i] == GLX_NONE) { + config->glmode.doubleBufferMode = GL_FALSE; + } else { + config->glmode.doubleBufferMode = GL_TRUE; + config->glmode.swapMethod = db_modes[i]; + } + + config->glmode.haveAccumBuffer = ((config->glmode.accumRedBits + + config->glmode.accumGreenBits + + config->glmode.accumBlueBits + + config->glmode.accumAlphaBits) > 0); + config->glmode.haveDepthBuffer = (config->glmode.depthBits > 0); + config->glmode.haveStencilBuffer = (config->glmode.stencilBits > 0); + + config++; + } + } + } + return GL_TRUE; +} |