/*
* Mesa 3-D graphics library
- * Version: 7.5
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
#include "glheader.h"
#include "colormac.h"
+#include "glformats.h"
#include "image.h"
#include "imports.h"
#include "macros.h"
-#include "mfeatures.h"
#include "mtypes.h"
-/**
- * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
- */
-GLboolean
-_mesa_type_is_packed(GLenum type)
-{
- switch (type) {
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case MESA_UNSIGNED_BYTE_4_4:
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- 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:
- case GL_UNSIGNED_SHORT_8_8_MESA:
- case GL_UNSIGNED_SHORT_8_8_REV_MESA:
- case GL_UNSIGNED_INT_24_8_EXT:
- case GL_UNSIGNED_INT_5_9_9_9_REV:
- case GL_UNSIGNED_INT_10F_11F_11F_REV:
- case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
- return GL_TRUE;
- }
-
- return GL_FALSE;
-}
-
-
-
/**
* Flip the order of the 2 bytes in each word in the given array.
*
}
-/**
- * Get the size of a GL data type.
- *
- * \param type GL data type.
- *
- * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
- * if an invalid type enum.
- */
-GLint
-_mesa_sizeof_type( GLenum type )
-{
- switch (type) {
- case GL_BITMAP:
- return 0;
- case GL_UNSIGNED_BYTE:
- return sizeof(GLubyte);
- case GL_BYTE:
- return sizeof(GLbyte);
- case GL_UNSIGNED_SHORT:
- return sizeof(GLushort);
- case GL_SHORT:
- return sizeof(GLshort);
- case GL_UNSIGNED_INT:
- return sizeof(GLuint);
- case GL_INT:
- return sizeof(GLint);
- case GL_FLOAT:
- return sizeof(GLfloat);
- case GL_DOUBLE:
- return sizeof(GLdouble);
- case GL_HALF_FLOAT_ARB:
- return sizeof(GLhalfARB);
- case GL_FIXED:
- return sizeof(GLfixed);
- default:
- return -1;
- }
-}
-
-
-/**
- * Same as _mesa_sizeof_type() but also accepting the packed pixel
- * format data types.
- */
-GLint
-_mesa_sizeof_packed_type( GLenum type )
-{
- switch (type) {
- case GL_BITMAP:
- return 0;
- case GL_UNSIGNED_BYTE:
- return sizeof(GLubyte);
- case GL_BYTE:
- return sizeof(GLbyte);
- case GL_UNSIGNED_SHORT:
- return sizeof(GLushort);
- case GL_SHORT:
- return sizeof(GLshort);
- case GL_UNSIGNED_INT:
- return sizeof(GLuint);
- case GL_INT:
- return sizeof(GLint);
- case GL_HALF_FLOAT_ARB:
- return sizeof(GLhalfARB);
- case GL_FLOAT:
- return sizeof(GLfloat);
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case MESA_UNSIGNED_BYTE_4_4:
- return sizeof(GLubyte);
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- 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_SHORT_8_8_MESA:
- case GL_UNSIGNED_SHORT_8_8_REV_MESA:
- return sizeof(GLushort);
- 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:
- case GL_UNSIGNED_INT_24_8_EXT:
- case GL_UNSIGNED_INT_5_9_9_9_REV:
- case GL_UNSIGNED_INT_10F_11F_11F_REV:
- return sizeof(GLuint);
- case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
- return 8;
- default:
- return -1;
- }
-}
-
-
-/**
- * Get the number of components in a pixel format.
- *
- * \param format pixel format.
- *
- * \return the number of components in the given format, or -1 if a bad format.
- */
-GLint
-_mesa_components_in_format( GLenum format )
-{
- switch (format) {
- case GL_COLOR_INDEX:
- case GL_STENCIL_INDEX:
- case GL_DEPTH_COMPONENT:
- case GL_RED:
- case GL_RED_INTEGER_EXT:
- case GL_GREEN:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA:
- case GL_ALPHA_INTEGER_EXT:
- case GL_LUMINANCE:
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_INTENSITY:
- return 1;
-
- case GL_LUMINANCE_ALPHA:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- case GL_RG:
- case GL_YCBCR_MESA:
- case GL_DEPTH_STENCIL_EXT:
- case GL_DUDV_ATI:
- case GL_DU8DV8_ATI:
- case GL_RG_INTEGER:
- return 2;
-
- case GL_RGB:
- case GL_BGR:
- case GL_RGB_INTEGER_EXT:
- case GL_BGR_INTEGER_EXT:
- return 3;
-
- case GL_RGBA:
- case GL_BGRA:
- case GL_ABGR_EXT:
- case GL_RGBA_INTEGER_EXT:
- case GL_BGRA_INTEGER_EXT:
- return 4;
-
- default:
- return -1;
- }
-}
-
-
-/**
- * Get the bytes per pixel of pixel format type pair.
- *
- * \param format pixel format.
- * \param type pixel type.
- *
- * \return bytes per pixel, or -1 if a bad format or type was given.
- */
-GLint
-_mesa_bytes_per_pixel( GLenum format, GLenum type )
-{
- GLint comps = _mesa_components_in_format( format );
- if (comps < 0)
- return -1;
-
- switch (type) {
- case GL_BITMAP:
- return 0; /* special case */
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- return comps * sizeof(GLubyte);
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- return comps * sizeof(GLshort);
- case GL_INT:
- case GL_UNSIGNED_INT:
- return comps * sizeof(GLint);
- case GL_FLOAT:
- return comps * sizeof(GLfloat);
- case GL_HALF_FLOAT_ARB:
- return comps * sizeof(GLhalfARB);
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- if (format == GL_RGB || format == GL_BGR ||
- format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)
- return sizeof(GLubyte);
- else
- return -1; /* error */
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- if (format == GL_RGB || format == GL_BGR ||
- format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)
- return sizeof(GLushort);
- else
- return -1; /* error */
- 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:
- 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_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 ||
- format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)
- return sizeof(GLuint);
- else
- return -1;
- case GL_UNSIGNED_SHORT_8_8_MESA:
- case GL_UNSIGNED_SHORT_8_8_REV_MESA:
- if (format == GL_YCBCR_MESA)
- return sizeof(GLushort);
- else
- return -1;
- case GL_UNSIGNED_INT_24_8_EXT:
- if (format == GL_DEPTH_STENCIL_EXT)
- return sizeof(GLuint);
- else
- return -1;
- case GL_UNSIGNED_INT_5_9_9_9_REV:
- if (format == GL_RGB)
- return sizeof(GLuint);
- else
- return -1;
- case GL_UNSIGNED_INT_10F_11F_11F_REV:
- if (format == GL_RGB)
- return sizeof(GLuint);
- else
- return -1;
- case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
- if (format == GL_DEPTH_STENCIL)
- return 8;
- else
- return -1;
- default:
- return -1;
- }
-}
-
-
-/**
- * Do error checking of format/type combinations for glReadPixels,
- * glDrawPixels and glTex[Sub]Image. Note that depending on the format
- * and type values, we may either generate GL_INVALID_OPERATION or
- * GL_INVALID_ENUM.
- *
- * \param format pixel format.
- * \param type pixel type.
- *
- * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR
- */
-GLenum
-_mesa_error_check_format_and_type(const struct gl_context *ctx,
- GLenum format, GLenum type)
-{
- /* special type-based checks (see glReadPixels, glDrawPixels error lists) */
- switch (type) {
- case GL_BITMAP:
- if (format != GL_COLOR_INDEX && format != GL_STENCIL_INDEX) {
- return GL_INVALID_ENUM;
- }
- break;
-
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- if (format == GL_RGB) {
- break; /* OK */
- }
- if (format == GL_RGB_INTEGER_EXT &&
- ctx->Extensions.ARB_texture_rgb10_a2ui) {
- break; /* OK */
- }
- return GL_INVALID_OPERATION;
-
- 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) {
- break; /* OK */
- }
- if ((format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) &&
- ctx->Extensions.ARB_texture_rgb10_a2ui) {
- break; /* OK */
- }
- return GL_INVALID_OPERATION;
-
- case GL_UNSIGNED_INT_24_8:
- if (!ctx->Extensions.EXT_packed_depth_stencil) {
- return GL_INVALID_ENUM;
- }
- if (format != GL_DEPTH_STENCIL) {
- return GL_INVALID_OPERATION;
- }
- return GL_NO_ERROR;
-
- case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
- if (!ctx->Extensions.ARB_depth_buffer_float) {
- return GL_INVALID_ENUM;
- }
- if (format != GL_DEPTH_STENCIL) {
- return GL_INVALID_OPERATION;
- }
- return GL_NO_ERROR;
-
- case GL_UNSIGNED_INT_10F_11F_11F_REV:
- if (!ctx->Extensions.EXT_packed_float) {
- return GL_INVALID_ENUM;
- }
- if (format != GL_RGB) {
- return GL_INVALID_OPERATION;
- }
- return GL_NO_ERROR;
-
- default:
- ; /* fall-through */
- }
-
- /* now, for each format, check the type for compatibility */
- switch (format) {
- case GL_COLOR_INDEX:
- case GL_STENCIL_INDEX:
- switch (type) {
- case GL_BITMAP:
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- return GL_NO_ERROR;
- case GL_HALF_FLOAT:
- return ctx->Extensions.ARB_half_float_pixel
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_RED:
- case GL_GREEN:
- case GL_BLUE:
- case GL_ALPHA:
-#if 0 /* not legal! see table 3.6 of the 1.5 spec */
- case GL_INTENSITY:
-#endif
- case GL_LUMINANCE:
- case GL_LUMINANCE_ALPHA:
- case GL_DEPTH_COMPONENT:
- 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:
- return GL_NO_ERROR;
- case GL_HALF_FLOAT:
- return ctx->Extensions.ARB_half_float_pixel
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_RG:
- if (!ctx->Extensions.ARB_texture_rg)
- return GL_INVALID_ENUM;
- 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:
- return GL_NO_ERROR;
- case GL_HALF_FLOAT:
- return ctx->Extensions.ARB_half_float_pixel
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_RGB:
- 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_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- return GL_NO_ERROR;
- case GL_HALF_FLOAT:
- return ctx->Extensions.ARB_half_float_pixel
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- case GL_UNSIGNED_INT_5_9_9_9_REV:
- return ctx->Extensions.EXT_texture_shared_exponent
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- case GL_UNSIGNED_INT_10F_11F_11F_REV:
- return ctx->Extensions.EXT_packed_float
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_BGR:
- switch (type) {
- /* NOTE: no packed types are supported with BGR. That's
- * intentional, according to the GL spec.
- */
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- return GL_NO_ERROR;
- case GL_HALF_FLOAT:
- return ctx->Extensions.ARB_half_float_pixel
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_RGBA:
- case GL_BGRA:
- 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_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:
- return GL_NO_ERROR;
- case GL_HALF_FLOAT:
- return ctx->Extensions.ARB_half_float_pixel
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_YCBCR_MESA:
- if (!ctx->Extensions.MESA_ycbcr_texture)
- return GL_INVALID_ENUM;
- if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
- type == GL_UNSIGNED_SHORT_8_8_REV_MESA)
- return GL_NO_ERROR;
- else
- return GL_INVALID_OPERATION;
-
- case GL_DEPTH_STENCIL_EXT:
- if (ctx->Extensions.EXT_packed_depth_stencil &&
- type == GL_UNSIGNED_INT_24_8)
- return GL_NO_ERROR;
- else if (ctx->Extensions.ARB_depth_buffer_float &&
- type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV)
- return GL_NO_ERROR;
- else
- return GL_INVALID_ENUM;
-
- case GL_DUDV_ATI:
- case GL_DU8DV8_ATI:
- if (!ctx->Extensions.ATI_envmap_bumpmap)
- return GL_INVALID_ENUM;
- 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:
- return GL_NO_ERROR;
- default:
- return GL_INVALID_ENUM;
- }
-
- /* integer-valued formats */
- case GL_RED_INTEGER_EXT:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA_INTEGER_EXT:
- case GL_RG_INTEGER:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- return (ctx->VersionMajor >= 3 ||
- ctx->Extensions.EXT_texture_integer)
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_RGB_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- return (ctx->VersionMajor >= 3 ||
- ctx->Extensions.EXT_texture_integer)
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- return ctx->Extensions.ARB_texture_rgb10_a2ui
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_BGR_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- /* NOTE: no packed formats w/ BGR format */
- return (ctx->VersionMajor >= 3 ||
- ctx->Extensions.EXT_texture_integer)
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_RGBA_INTEGER_EXT:
- case GL_BGRA_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- return (ctx->VersionMajor >= 3 ||
- ctx->Extensions.EXT_texture_integer)
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- 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:
- return ctx->Extensions.ARB_texture_rgb10_a2ui
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- return ctx->Extensions.EXT_texture_integer
- ? GL_NO_ERROR : GL_INVALID_ENUM;
- default:
- return GL_INVALID_ENUM;
- }
-
- default:
- return GL_INVALID_ENUM;
- }
- return GL_NO_ERROR;
-}
-
-
-
-/**
- * Does the given base texture/renderbuffer format have the channel
- * named by 'pname'?
- */
-GLboolean
-_mesa_base_format_has_channel(GLenum base_format, GLenum pname)
-{
- switch (pname) {
- case GL_TEXTURE_RED_SIZE:
- case GL_TEXTURE_RED_TYPE:
- case GL_RENDERBUFFER_RED_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
- if (base_format == GL_RED ||
- base_format == GL_RG ||
- base_format == GL_RGB ||
- base_format == GL_RGBA) {
- return GL_TRUE;
- }
- return GL_FALSE;
- case GL_TEXTURE_GREEN_SIZE:
- case GL_TEXTURE_GREEN_TYPE:
- case GL_RENDERBUFFER_GREEN_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
- if (base_format == GL_RG ||
- base_format == GL_RGB ||
- base_format == GL_RGBA) {
- return GL_TRUE;
- }
- return GL_FALSE;
- case GL_TEXTURE_BLUE_SIZE:
- case GL_TEXTURE_BLUE_TYPE:
- case GL_RENDERBUFFER_BLUE_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
- if (base_format == GL_RGB ||
- base_format == GL_RGBA) {
- return GL_TRUE;
- }
- return GL_FALSE;
- case GL_TEXTURE_ALPHA_SIZE:
- case GL_TEXTURE_ALPHA_TYPE:
- case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
- if (base_format == GL_RGBA ||
- base_format == GL_ALPHA ||
- base_format == GL_LUMINANCE_ALPHA) {
- return GL_TRUE;
- }
- return GL_FALSE;
- case GL_TEXTURE_LUMINANCE_SIZE:
- case GL_TEXTURE_LUMINANCE_TYPE:
- if (base_format == GL_LUMINANCE ||
- base_format == GL_LUMINANCE_ALPHA) {
- return GL_TRUE;
- }
- return GL_FALSE;
- case GL_TEXTURE_INTENSITY_SIZE:
- case GL_TEXTURE_INTENSITY_TYPE:
- if (base_format == GL_INTENSITY) {
- return GL_TRUE;
- }
- return GL_FALSE;
- case GL_TEXTURE_DEPTH_SIZE:
- case GL_TEXTURE_DEPTH_TYPE:
- case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
- if (base_format == GL_DEPTH_STENCIL ||
- base_format == GL_DEPTH_COMPONENT) {
- return GL_TRUE;
- }
- return GL_FALSE;
- case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
- if (base_format == GL_DEPTH_STENCIL ||
- base_format == GL_STENCIL_INDEX) {
- return GL_TRUE;
- }
- return GL_FALSE;
- default:
- _mesa_warning(NULL, "%s: Unexpected channel token 0x%x\n",
- __FUNCTION__, pname);
- return GL_FALSE;
- }
-
- return GL_FALSE;
-}
-
-
/**
* Return the byte offset of a specific pixel in an image (1D, 2D or 3D).
*
/* chop off [0, t] part */
ASSERT(t >= 0.0 && t <= 1.0);
*dstX0 = minValue;
- bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F; /* flipped??? */
+ bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F;
*srcX0 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias);
}
else if (*dstX1 < minValue) {
/* chop off [0, t] part */
ASSERT(t >= 0.0 && t <= 1.0);
*dstX1 = minValue;
- bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F;
+ bias = (*srcX0 < *srcX1) ? -0.5F : 0.5F;
*srcX1 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias);
}
}
projects / mesa.git / blobdiff