-/* $Id: dd.h,v 1.47 2001/01/09 00:02:55 brianp Exp $ */
+/* $Id: dd.h,v 1.61 2001/04/04 21:54:20 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ *
+ * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ *
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
- *
+ *
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
- *
+ *
* 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
struct gl_pixelstore_attrib;
-
-/*
- * Device Driver (DD) interface
- *
- *
- * All device driver functions are accessed through pointers in the
- * dd_function_table struct (defined below) which is stored in the GLcontext
- * struct. Since the device driver is strictly accessed trough a table of
- * function pointers we can:
- * 1. switch between a number of different device drivers at runtime.
- * 2. use optimized functions dependant on current rendering state or
- * frame buffer configuration.
- *
- * The function pointers in the dd_function_table struct are divided into
- * two groups: mandatory and optional.
- * Mandatory functions have to be implemented by every device driver.
- * Optional functions may or may not be implemented by the device driver.
- * The optional functions provide ways to take advantage of special hardware
- * or optimized algorithms.
- *
- * The function pointers in the dd_function_table struct should first be
- * initialized in the driver's "MakeCurrent" function. The "MakeCurrent"
- * function is a little different in each device driver. See the X/Mesa,
- * GLX, or OS/Mesa drivers for examples.
- *
- * Later, Mesa may call the dd_function_table's UpdateState() function.
- * This function should initialize the dd_function_table's pointers again.
- * The UpdateState() function is called whenever the core (GL) rendering
- * state is changed in a way which may effect rasterization. For example,
- * the TriangleFunc() pointer may have to point to different functions
- * depending on whether smooth or flat shading is enabled.
- *
- * Note that the first argument to every device driver function is a
- * GLcontext *. In turn, the GLcontext->DriverCtx pointer points to
- * the driver-specific context struct. See the X/Mesa or OS/Mesa interface
- * for an example.
- *
- * For more information about writing a device driver see the ddsample.c
- * file and other device drivers (X/xmesa[1234].c, OSMesa/osmesa.c, etc)
- * for examples.
- *
- *
- * Look below in the dd_function_table struct definition for descriptions
- * of each device driver function.
- *
- *
- * In the future more function pointers may be added for glReadPixels
- * glCopyPixels, etc.
- *
- *
- * Notes:
- * ------
- * RGBA = red/green/blue/alpha
- * CI = color index (color mapped mode)
- * mono = all pixels have the same color or index
- *
- * The write_ functions all take an array of mask flags which indicate
- * whether or not the pixel should be written. One special case exists
- * in the write_color_span function: if the mask array is NULL, then
- * draw all pixels. This is an optimization used for glDrawPixels().
- *
- * IN ALL CASES:
- * X coordinates start at 0 at the left and increase to the right
- * Y coordinates start at 0 at the bottom and increase upward
- *
- */
-
-
-
-
-
-
/* Mask bits sent to the driver Clear() function */
#define DD_FRONT_LEFT_BIT FRONT_LEFT_BIT /* 1 */
#define DD_FRONT_RIGHT_BIT FRONT_RIGHT_BIT /* 2 */
#define DD_ACCUM_BIT GL_ACCUM_BUFFER_BIT /* 0x00000200 */
-
-
-
-
-
-/* Point, line, triangle, quadrilateral and rectangle rasterizer
- * functions. These are specific to the tnl module and will shortly
- * move to a driver interface specific to that module.
- */
-typedef void (*points_func)( GLcontext *ctx, GLuint first, GLuint last );
-
-typedef void (*line_func)( GLcontext *ctx, GLuint v1, GLuint v2 );
-
-typedef void (*triangle_func)( GLcontext *ctx,
- GLuint v1, GLuint v2, GLuint v3 );
-
-typedef void (*quad_func)( GLcontext *ctx, GLuint v1, GLuint v2,
- GLuint v3, GLuint v4 );
-
-typedef void (*render_func)( GLcontext *ctx, GLuint start, GLuint count,
- GLuint flags );
-
-
/*
* Device Driver function table.
*/
void (*UpdateState)( GLcontext *ctx, GLuint new_state );
/*
- * UpdateState() is called whenver Mesa thinks the device driver should
- * update its state and/or the other pointers (such as PointsFunc,
- * LineFunc, or TriangleFunc).
+ * UpdateState() is called to notify the driver after Mesa has made
+ * some internal state changes. This is in addition to any
+ * statechange callbacks Mesa may already have made.
*/
- void (*ClearIndex)( GLcontext *ctx, GLuint index );
- /*
- * Called whenever glClearIndex() is called. Set the index for clearing
- * the color buffer when in color index mode.
- */
-
- void (*ClearColor)( GLcontext *ctx, GLchan red, GLchan green,
- GLchan blue, GLchan alpha );
- /*
- * Called whenever glClearColor() is called. Set the color for clearing
- * the color buffer when in RGBA mode.
- */
-
- GLbitfield (*Clear)( GLcontext *ctx, GLbitfield mask, GLboolean all,
- GLint x, GLint y, GLint width, GLint height );
+ void (*Clear)( GLcontext *ctx, GLbitfield mask, GLboolean all,
+ GLint x, GLint y, GLint width, GLint height );
/* Clear the color/depth/stencil/accum buffer(s).
* 'mask' is a bitmask of the DD_*_BIT values defined above that indicates
- * which buffers need to be cleared. The driver should clear those
- * buffers then return a new bitmask indicating which buffers should be
- * cleared by software Mesa.
+ * which buffers need to be cleared.
* If 'all' is true then the clear the whole buffer, else clear only the
* region defined by (x,y,width,height).
* This function must obey the glColorMask, glIndexMask and glStencilMask
* GL_NONE - disable buffer write in device driver.
*/
- void (*SetReadBuffer)( GLcontext *ctx, GLframebuffer *colorBuffer,
- GLenum buffer );
- /*
- * Specifies the current buffer for reading.
- * colorBuffer will be one of:
- * GL_FRONT_LEFT - this buffer always exists
- * GL_BACK_LEFT - when double buffering
- * GL_FRONT_RIGHT - when using stereo
- * GL_BACK_RIGHT - when using stereo and double buffering
- */
-
void (*GetBufferSize)( GLcontext *ctx, GLuint *width, GLuint *height );
/*
* Returns the width and height of the current color buffer.
*/
-
- /***
- *** Functions for writing pixels to the frame buffer:
- ***/
-
- void (*WriteRGBASpan)( const GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- CONST GLchan rgba[][4], const GLubyte mask[] );
- void (*WriteRGBSpan)( const GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- CONST GLchan rgb[][3], const GLubyte mask[] );
- /* Write a horizontal run of RGBA or RGB pixels.
- * If mask is NULL, draw all pixels.
- * If mask is not null, only draw pixel [i] when mask [i] is true.
- */
-
- void (*WriteMonoRGBASpan)( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLchan color[4], const GLubyte mask[] );
- /* Write a horizontal run of RGBA pixels all with the same color.
- */
-
- void (*WriteRGBAPixels)( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- CONST GLchan rgba[][4], const GLubyte mask[] );
- /* Write array of RGBA pixels at random locations.
- */
-
- void (*WriteMonoRGBAPixels)( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLchan color[4], const GLubyte mask[] );
- /* Write an array of mono-RGBA pixels at random locations.
- */
-
- void (*WriteCI32Span)( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLuint index[], const GLubyte mask[] );
- void (*WriteCI8Span)( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLubyte index[], const GLubyte mask[] );
- /* Write a horizontal run of CI pixels. One function is for 32bpp
- * indexes and the other for 8bpp pixels (the common case). You mus
- * implement both for color index mode.
- */
-
- void (*WriteMonoCISpan)( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLuint colorIndex, const GLubyte mask[] );
- /* Write a horizontal run of color index pixels using the color index
- * last specified by the Index() function.
- */
-
- void (*WriteCI32Pixels)( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLuint index[], const GLubyte mask[] );
- /*
- * Write a random array of CI pixels.
- */
-
- void (*WriteMonoCIPixels)( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLuint colorIndex, const GLubyte mask[] );
- /* Write a random array of color index pixels using the color index
- * last specified by the Index() function.
- */
-
-
- /***
- *** Functions to read pixels from frame buffer:
- ***/
-
- void (*ReadCI32Span)( const GLcontext *ctx,
- GLuint n, GLint x, GLint y, GLuint index[] );
- /* Read a horizontal run of color index pixels.
- */
-
- void (*ReadRGBASpan)( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLchan rgba[][4] );
- /* Read a horizontal run of RGBA pixels.
- */
-
- void (*ReadCI32Pixels)( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLuint indx[], const GLubyte mask[] );
- /* Read a random array of CI pixels.
- */
-
- void (*ReadRGBAPixels)( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLchan rgba[][4], const GLubyte mask[] );
- /* Read a random array of RGBA pixels.
- */
-
-
- /**********************************************************************
- *** Optional functions: these functions may or may not be ***
- *** implemented by the device driver. If the device driver ***
- *** doesn't implement them it should never touch these pointers ***
- *** since Mesa will either set them to NULL or point them at a ***
- *** fall-back function. ***
- **********************************************************************/
-
void (*Finish)( GLcontext *ctx );
/*
* This is called whenever glFinish() is called.
*/
- /***
- *** For supporting hardware Z buffers:
- *** Either ALL or NONE of these functions must be implemented!
- *** NOTE that Each depth value is a 32-bit GLuint. If the depth
- *** buffer is less than 32 bits deep then the extra upperbits are zero.
- ***/
-
- void (*WriteDepthSpan)( GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLdepth depth[], const GLubyte mask[] );
- /* Write a horizontal span of values into the depth buffer. Only write
- * depth[i] value if mask[i] is nonzero.
- */
-
- void (*ReadDepthSpan)( GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLdepth depth[] );
- /* Read a horizontal span of values from the depth buffer.
- */
-
-
- void (*WriteDepthPixels)( GLcontext *ctx, GLuint n,
- const GLint x[], const GLint y[],
- const GLdepth depth[], const GLubyte mask[] );
- /* Write an array of randomly positioned depth values into the
- * depth buffer. Only write depth[i] value if mask[i] is nonzero.
- */
-
- void (*ReadDepthPixels)( GLcontext *ctx, GLuint n,
- const GLint x[], const GLint y[],
- GLdepth depth[] );
- /* Read an array of randomly positioned depth values from the depth buffer.
- */
-
-
-
- /***
- *** For supporting hardware stencil buffers:
- *** Either ALL or NONE of these functions must be implemented!
- ***/
-
- void (*WriteStencilSpan)( GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLstencil stencil[], const GLubyte mask[] );
- /* Write a horizontal span of stencil values into the stencil buffer.
- * If mask is NULL, write all stencil values.
- * Else, only write stencil[i] if mask[i] is non-zero.
- */
-
- void (*ReadStencilSpan)( GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLstencil stencil[] );
- /* Read a horizontal span of stencil values from the stencil buffer.
- */
-
- void (*WriteStencilPixels)( GLcontext *ctx, GLuint n,
- const GLint x[], const GLint y[],
- const GLstencil stencil[],
- const GLubyte mask[] );
- /* Write an array of stencil values into the stencil buffer.
- * If mask is NULL, write all stencil values.
- * Else, only write stencil[i] if mask[i] is non-zero.
- */
-
- void (*ReadStencilPixels)( GLcontext *ctx, GLuint n,
- const GLint x[], const GLint y[],
- GLstencil stencil[] );
- /* Read an array of stencil values from the stencil buffer.
- */
-
-
/***
*** For hardware accumulation buffer:
***/
- GLboolean (*Accum)( GLcontext *ctx, GLenum op, GLfloat value,
- GLint xpos, GLint ypos, GLint width, GLint height );
+ void (*Accum)( GLcontext *ctx, GLenum op, GLfloat value,
+ GLint xpos, GLint ypos, GLint width, GLint height );
/* Execute glAccum command within the given scissor region.
*/
*** glDraw/Read/CopyPixels and glBitmap functions:
***/
- GLboolean (*DrawPixels)( GLcontext *ctx,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const struct gl_pixelstore_attrib *unpack,
- const GLvoid *pixels );
+ void (*DrawPixels)( GLcontext *ctx,
+ GLint x, GLint y, GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid *pixels );
/* This is called by glDrawPixels.
* 'unpack' describes how to unpack the source image data.
- * Return GL_TRUE if the driver succeeds, return GL_FALSE if core Mesa
- * must do the job.
*/
- GLboolean (*ReadPixels)( GLcontext *ctx,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const struct gl_pixelstore_attrib *unpack,
- GLvoid *dest );
+ void (*ReadPixels)( GLcontext *ctx,
+ GLint x, GLint y, GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *unpack,
+ GLvoid *dest );
/* Called by glReadPixels.
- * Return GL_TRUE if operation completed, else return GL_FALSE.
- * This function must respect all glPixelTransfer settings.
*/
- GLboolean (*CopyPixels)( GLcontext *ctx,
+ void (*CopyPixels)( GLcontext *ctx,
GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint dstx, GLint dsty, GLenum type );
- /* Do a glCopyPixels. Return GL_TRUE if operation completed, else
- * return GL_FALSE. This function must respect all rasterization
+ /* Do a glCopyPixels. This function must respect all rasterization
* state, glPixelTransfer, glPixelZoom, etc.
*/
- GLboolean (*Bitmap)( GLcontext *ctx,
- GLint x, GLint y, GLsizei width, GLsizei height,
- const struct gl_pixelstore_attrib *unpack,
- const GLubyte *bitmap );
+ void (*Bitmap)( GLcontext *ctx,
+ GLint x, GLint y, GLsizei width, GLsizei height,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLubyte *bitmap );
/* This is called by glBitmap. Works the same as DrawPixels, above.
*/
+ void (*ResizeBuffersMESA)( GLcontext *ctx );
+
/***
*** Texture image functions:
***/
-
- GLboolean (*TexImage1D)( GLcontext *ctx, GLenum target, GLint level,
- GLenum format, GLenum type, const GLvoid *pixels,
- const struct gl_pixelstore_attrib *packing,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage,
- GLboolean *retainInternalCopy );
- GLboolean (*TexImage2D)( GLcontext *ctx, GLenum target, GLint level,
- GLenum format, GLenum type, const GLvoid *pixels,
- const struct gl_pixelstore_attrib *packing,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage,
- GLboolean *retainInternalCopy );
- GLboolean (*TexImage3D)( GLcontext *ctx, GLenum target, GLint level,
- GLenum format, GLenum type, const GLvoid *pixels,
- const struct gl_pixelstore_attrib *packing,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage,
- GLboolean *retainInternalCopy );
+ const struct gl_texture_format *
+ (*ChooseTextureFormat)( GLcontext *ctx, GLint internalFormat,
+ GLenum srcFormat, GLenum srcType );
+ /* This is called by the _mesa_store_tex[sub]image[123]d() fallback
+ * functions. The driver should examine <internalFormat> and return a
+ * pointer to an appropriate gl_texture_format.
+ */
+
+ void (*TexImage1D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint internalFormat,
+ GLint width, GLint border,
+ GLenum format, GLenum type, const GLvoid *pixels,
+ const struct gl_pixelstore_attrib *packing,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
+ void (*TexImage2D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint internalFormat,
+ GLint width, GLint height, GLint border,
+ GLenum format, GLenum type, const GLvoid *pixels,
+ const struct gl_pixelstore_attrib *packing,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
+ void (*TexImage3D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint internalFormat,
+ GLint width, GLint height, GLint depth, GLint border,
+ GLenum format, GLenum type, const GLvoid *pixels,
+ const struct gl_pixelstore_attrib *packing,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
/* Called by glTexImage1/2/3D.
- * Will not be called if any glPixelTransfer operations are enabled.
* Arguments:
* <target>, <level>, <format>, <type> and <pixels> are user specified.
* <packing> indicates the image packing of pixels.
* width, height, depth, border and internalFormat information.
* <retainInternalCopy> is returned by this function and indicates whether
* core Mesa should keep an internal copy of the texture image.
- * Return GL_TRUE if operation completed, return GL_FALSE if core Mesa
- * should do the job. If GL_FALSE is returned, this function will be
- * called a second time after the texture image has been unpacked into
- * GLubytes. It may be easier for the driver to handle then.
- */
-
- GLboolean (*TexSubImage1D)( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLsizei width,
- GLenum format, GLenum type,
- const GLvoid *pixels,
- const struct gl_pixelstore_attrib *packing,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage );
- GLboolean (*TexSubImage2D)( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLint yoffset,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const GLvoid *pixels,
- const struct gl_pixelstore_attrib *packing,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage );
- GLboolean (*TexSubImage3D)( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLsizei width, GLsizei height, GLint depth,
- GLenum format, GLenum type,
- const GLvoid *pixels,
- const struct gl_pixelstore_attrib *packing,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage );
+ * Drivers should call a fallback routine from texstore.c if needed.
+ */
+
+ void (*TexSubImage1D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset, GLsizei width,
+ GLenum format, GLenum type,
+ const GLvoid *pixels,
+ const struct gl_pixelstore_attrib *packing,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
+ void (*TexSubImage2D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset, GLint yoffset,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const GLvoid *pixels,
+ const struct gl_pixelstore_attrib *packing,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
+ void (*TexSubImage3D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset, GLint yoffset, GLint zoffset,
+ GLsizei width, GLsizei height, GLint depth,
+ GLenum format, GLenum type,
+ const GLvoid *pixels,
+ const struct gl_pixelstore_attrib *packing,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
/* Called by glTexSubImage1/2/3D.
- * Will not be called if any glPixelTransfer operations are enabled.
* Arguments:
* <target>, <level>, <xoffset>, <yoffset>, <zoffset>, <width>, <height>,
* <depth>, <format>, <type> and <pixels> are user specified.
* <texObj> is the target texture object.
* <texImage> is the target texture image. It will have the texture
* width, height, border and internalFormat information.
- * Return GL_TRUE if operation completed, return GL_FALSE if core Mesa
- * should do the job. If GL_FALSE is returned, then TexImage1/2/3D will
- * be called with the complete texture image.
- */
-
- GLboolean (*CopyTexImage1D)( GLcontext *ctx, GLenum target, GLint level,
- GLenum internalFormat, GLint x, GLint y,
- GLsizei width, GLint border );
- GLboolean (*CopyTexImage2D)( GLcontext *ctx, GLenum target, GLint level,
- GLenum internalFormat, GLint x, GLint y,
- GLsizei width, GLsizei height, GLint border );
- /* Called by glCopyTexImage1D and glCopyTexImage2D.
- * Will not be called if any glPixelTransfer operations are enabled.
- * Return GL_TRUE if operation completed, return GL_FALSE if core Mesa
- * should do the job.
+ * The driver should use a fallback routine from texstore.c if needed.
*/
- GLboolean (*CopyTexSubImage1D)( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset,
- GLint x, GLint y, GLsizei width );
- GLboolean (*CopyTexSubImage2D)( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLint yoffset,
- GLint x, GLint y,
- GLsizei width, GLsizei height );
- GLboolean (*CopyTexSubImage3D)( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLint x, GLint y,
- GLsizei width, GLsizei height );
+ void (*CopyTexImage1D)( GLcontext *ctx, GLenum target, GLint level,
+ GLenum internalFormat, GLint x, GLint y,
+ GLsizei width, GLint border );
+ void (*CopyTexImage2D)( GLcontext *ctx, GLenum target, GLint level,
+ GLenum internalFormat, GLint x, GLint y,
+ GLsizei width, GLsizei height, GLint border );
+ /* Called by glCopyTexImage1D and glCopyTexImage2D.
+ * Drivers should use a fallback routine from texstore.c if needed.
+ */
+
+ void (*CopyTexSubImage1D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset,
+ GLint x, GLint y, GLsizei width );
+ void (*CopyTexSubImage2D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset, GLint yoffset,
+ GLint x, GLint y,
+ GLsizei width, GLsizei height );
+ void (*CopyTexSubImage3D)( GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset, GLint yoffset, GLint zoffset,
+ GLint x, GLint y,
+ GLsizei width, GLsizei height );
/* Called by glCopyTexSubImage1/2/3D.
- * Will not be called if any glPixelTransfer operations are enabled.
- * Return GL_TRUE if operation completed, return GL_FALSE if core Mesa
- * should do the job.
- */
-
- GLvoid *(*GetTexImage)( GLcontext *ctx, GLenum target, GLint level,
- const struct gl_texture_object *texObj,
- GLenum *formatOut, GLenum *typeOut,
- GLboolean *freeImageOut );
- /* Called by glGetTexImage or by core Mesa when a texture image
- * is needed for software fallback rendering.
- * Return the address of the texture image or NULL if failure.
- * The image must be tightly packed (i.e. row stride = image width)
- * Return the image's format and type in formatOut and typeOut.
- * The format and type must be values which are accepted by glTexImage.
- * Set the freeImageOut flag if the returned image should be deallocated
- * with FREE() when finished.
- * The size of the image can be deduced from the target and level.
- * Core Mesa will perform any image format/type conversions that are needed.
+ * Drivers should use a fallback routine from texstore.c if needed.
*/
GLboolean (*TestProxyTexImage)(GLcontext *ctx, GLenum target,
*** Compressed texture functions:
***/
- GLboolean (*CompressedTexImage1D)( GLcontext *ctx, GLenum target,
- GLint level, GLsizei imageSize,
- const GLvoid *data,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage,
- GLboolean *retainInternalCopy);
- GLboolean (*CompressedTexImage2D)( GLcontext *ctx, GLenum target,
- GLint level, GLsizei imageSize,
- const GLvoid *data,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage,
- GLboolean *retainInternalCopy);
- GLboolean (*CompressedTexImage3D)( GLcontext *ctx, GLenum target,
- GLint level, GLsizei imageSize,
- const GLvoid *data,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage,
- GLboolean *retainInternalCopy);
+ void (*CompressedTexImage1D)( GLcontext *ctx, GLenum target,
+ GLint level, GLint internalFormat,
+ GLsizei width, GLint border,
+ GLsizei imageSize, const GLvoid *data,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
+ void (*CompressedTexImage2D)( GLcontext *ctx, GLenum target,
+ GLint level, GLint internalFormat,
+ GLsizei width, GLsizei height, GLint border,
+ GLsizei imageSize, const GLvoid *data,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
+ void (*CompressedTexImage3D)( GLcontext *ctx, GLenum target,
+ GLint level, GLint internalFormat,
+ GLsizei width, GLsizei height, GLsizei depth,
+ GLint border,
+ GLsizei imageSize, const GLvoid *data,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
/* Called by glCompressedTexImage1/2/3D.
* Arguments:
* <target>, <level>, <internalFormat>, <data> are user specified.
* should do the job.
*/
- GLboolean (*CompressedTexSubImage1D)( GLcontext *ctx, GLenum target,
- GLint level, GLint xoffset,
- GLsizei width, GLenum format,
- GLsizei imageSize, const GLvoid *data,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage );
- GLboolean (*CompressedTexSubImage2D)( GLcontext *ctx, GLenum target,
- GLint level, GLint xoffset,
- GLint yoffset, GLsizei width,
- GLint height, GLenum format,
- GLsizei imageSize, const GLvoid *data,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage );
- GLboolean (*CompressedTexSubImage3D)( GLcontext *ctx, GLenum target,
- GLint level, GLint xoffset,
- GLint yoffset, GLint zoffset,
- GLsizei width, GLint height,
- GLint depth, GLenum format,
- GLsizei imageSize, const GLvoid *data,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage );
+ void (*CompressedTexSubImage1D)(GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset, GLsizei width,
+ GLenum format,
+ GLsizei imageSize, const GLvoid *data,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage);
+ void (*CompressedTexSubImage2D)(GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset, GLint yoffset,
+ GLsizei width, GLint height,
+ GLenum format,
+ GLsizei imageSize, const GLvoid *data,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage);
+ void (*CompressedTexSubImage3D)(GLcontext *ctx, GLenum target, GLint level,
+ GLint xoffset, GLint yoffset, GLint zoffset,
+ GLsizei width, GLint height, GLint depth,
+ GLenum format,
+ GLsizei imageSize, const GLvoid *data,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage);
/* Called by glCompressedTexSubImage1/2/3D.
* Arguments:
* <target>, <level>, <x/z/zoffset>, <width>, <height>, <depth>,
* should do the job.
*/
+ GLboolean (*IsCompressedFormat)(GLcontext *ctx, GLint internalFormat);
+ /* Called to tell if a format is a compressed format.
+ */
+
+ void (*GetCompressedTexImage)( GLcontext *ctx, GLenum target,
+ GLint lod, void *image,
+ const struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage );
+ /* Called by glGetCompressedTexImageARB.
+ * <target>, <lod>, <image> are specified by user.
+ * <texObj> is the source texture object.
+ * <texImage> is the source texture image.
+ */
+
GLint (*BaseCompressedTexFormat)(GLcontext *ctx,
GLint internalFormat);
/* Called to compute the base format for a specific compressed
* format. Return -1 if the internalFormat is not a specific
- * compressed format that the driver recognizes. Note the
+ * compressed format that the driver recognizes.
+ * Example: if internalFormat==GL_COMPRESSED_RGB_FXT1_3DFX, return GL_RGB.
+ */
+
+#if 000
+ /* ... Note the
* return value differences between this function and
* SpecificCompressedTexFormat below.
*/
* do the right thing with it.
*/
- GLboolean (*IsCompressedFormat)(GLcontext *ctx, GLint internalFormat);
- /* Called to tell if a format is a compressed format.
- */
-
GLsizei (*CompressedImageSize)(GLcontext *ctx,
GLenum internalFormat,
GLuint numDimensions,
/* Calculate the size of a compressed image, given the image's
* format and dimensions.
*/
-
- void (*GetCompressedTexImage)( GLcontext *ctx, GLenum target,
- GLint lod, void *image,
- const struct gl_texture_object *texObj,
- struct gl_texture_image *texImage );
- /* Called by glGetCompressedTexImageARB.
- * <target>, <lod>, <image> are specified by user.
- * <texObj> is the source texture object.
- * <texImage> is the source texture image.
- */
+#endif
/***
*** Texture object functions:
/* Called by glBindTexture().
*/
+ void (*CreateTexture)( GLcontext *ctx, struct gl_texture_object *tObj );
+ /* Called when a texture object is created.
+ */
+
void (*DeleteTexture)( GLcontext *ctx, struct gl_texture_object *tObj );
/* Called when a texture object is about to be deallocated. Driver
* should free anything attached to the DriverData pointers.
*/
- GLboolean (*IsTextureResident)( GLcontext *ctx,
+ GLboolean (*IsTextureResident)( GLcontext *ctx,
struct gl_texture_object *t );
/* Called by glAreTextureResident().
*/
* is to be updated.
*/
+ /***
+ *** Imaging functionality:
+ ***/
+ void (*CopyColorTable)( GLcontext *ctx,
+ GLenum target, GLenum internalformat,
+ GLint x, GLint y, GLsizei width );
+
+ void (*CopyColorSubTable)( GLcontext *ctx,
+ GLenum target, GLsizei start,
+ GLint x, GLint y, GLsizei width );
+
+ void (*CopyConvolutionFilter1D)( GLcontext *ctx, GLenum target,
+ GLenum internalFormat,
+ GLint x, GLint y, GLsizei width );
+
+ void (*CopyConvolutionFilter2D)( GLcontext *ctx, GLenum target,
+ GLenum internalFormat,
+ GLint x, GLint y,
+ GLsizei width, GLsizei height );
+
+
/***
*** State-changing functions (drawing functions are above)
*** They're ALSO called by the gl_PopAttrib() function!!!
*** May add more functions like these to the device driver in the future.
***/
- void (*AlphaFunc)(GLcontext *ctx, GLenum func, GLclampf ref);
+ void (*AlphaFunc)(GLcontext *ctx, GLenum func, GLchan ref);
+ void (*BlendColor)(GLcontext *ctx, const GLfloat color[4]);
void (*BlendEquation)(GLcontext *ctx, GLenum mode);
void (*BlendFunc)(GLcontext *ctx, GLenum sfactor, GLenum dfactor);
void (*BlendFuncSeparate)(GLcontext *ctx,
GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA);
+ void (*ClearColor)(GLcontext *ctx, const GLchan color[4]);
void (*ClearDepth)(GLcontext *ctx, GLclampd d);
+ void (*ClearIndex)(GLcontext *ctx, GLuint index);
void (*ClearStencil)(GLcontext *ctx, GLint s);
void (*ColorMask)(GLcontext *ctx, GLboolean rmask, GLboolean gmask,
GLboolean bmask, GLboolean amask );
const GLfloat *params);
void (*PointSize)(GLcontext *ctx, GLfloat size);
void (*PolygonMode)(GLcontext *ctx, GLenum face, GLenum mode);
+ void (*PolygonOffset)(GLcontext *ctx, GLfloat factor, GLfloat units);
void (*PolygonStipple)(GLcontext *ctx, const GLubyte *mask );
void (*RenderMode)(GLcontext *ctx, GLenum mode );
void (*Scissor)(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h);
void (*StencilFunc)(GLcontext *ctx, GLenum func, GLint ref, GLuint mask);
void (*StencilMask)(GLcontext *ctx, GLuint mask);
void (*StencilOp)(GLcontext *ctx, GLenum fail, GLenum zfail, GLenum zpass);
- void (*TexGen)(GLcontext *ctx, GLenum coord, GLenum pname,
+ void (*TexGen)(GLcontext *ctx, GLenum coord, GLenum pname,
const GLfloat *params);
void (*TexEnv)(GLcontext *ctx, GLenum target, GLenum pname,
const GLfloat *param);
void (*Viewport)(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h);
- /*** State-query functions
- ***
- *** Return GL_TRUE if query was completed, GL_FALSE otherwise.
- ***/
- GLboolean (*GetBooleanv)(GLcontext *ctx, GLenum pname, GLboolean *result);
- GLboolean (*GetDoublev)(GLcontext *ctx, GLenum pname, GLdouble *result);
- GLboolean (*GetFloatv)(GLcontext *ctx, GLenum pname, GLfloat *result);
- GLboolean (*GetIntegerv)(GLcontext *ctx, GLenum pname, GLint *result);
- GLboolean (*GetPointerv)(GLcontext *ctx, GLenum pname, GLvoid **result);
-
-
/***
*** Vertex array functions
***
*** Called by the corresponding OpenGL functions.
***/
- void (*VertexPointer)(GLcontext *ctx, GLint size, GLenum type,
+ void (*VertexPointer)(GLcontext *ctx, GLint size, GLenum type,
GLsizei stride, const GLvoid *ptr);
- void (*NormalPointer)(GLcontext *ctx, GLenum type,
+ void (*NormalPointer)(GLcontext *ctx, GLenum type,
GLsizei stride, const GLvoid *ptr);
- void (*ColorPointer)(GLcontext *ctx, GLint size, GLenum type,
+ void (*ColorPointer)(GLcontext *ctx, GLint size, GLenum type,
GLsizei stride, const GLvoid *ptr);
- void (*FogCoordPointer)(GLcontext *ctx, GLenum type,
+ void (*FogCoordPointer)(GLcontext *ctx, GLenum type,
GLsizei stride, const GLvoid *ptr);
- void (*IndexPointer)(GLcontext *ctx, GLenum type,
+ void (*IndexPointer)(GLcontext *ctx, GLenum type,
GLsizei stride, const GLvoid *ptr);
- void (*SecondaryColorPointer)(GLcontext *ctx, GLint size, GLenum type,
+ void (*SecondaryColorPointer)(GLcontext *ctx, GLint size, GLenum type,
GLsizei stride, const GLvoid *ptr);
- void (*TexCoordPointer)(GLcontext *ctx, GLint size, GLenum type,
+ void (*TexCoordPointer)(GLcontext *ctx, GLint size, GLenum type,
GLsizei stride, const GLvoid *ptr);
void (*EdgeFlagPointer)(GLcontext *ctx, GLsizei stride, const GLvoid *ptr);
-
- /***
- *** Rendering
+ /*** State-query functions
+ ***
+ *** Return GL_TRUE if query was completed, GL_FALSE otherwise.
***/
+ GLboolean (*GetBooleanv)(GLcontext *ctx, GLenum pname, GLboolean *result);
+ GLboolean (*GetDoublev)(GLcontext *ctx, GLenum pname, GLdouble *result);
+ GLboolean (*GetFloatv)(GLcontext *ctx, GLenum pname, GLfloat *result);
+ GLboolean (*GetIntegerv)(GLcontext *ctx, GLenum pname, GLint *result);
+ GLboolean (*GetPointerv)(GLcontext *ctx, GLenum pname, GLvoid **result);
- void (*RenderStart)(GLcontext *ctx);
- void (*RenderFinish)(GLcontext *ctx);
- /* Called before and after all rendering operations, including DrawPixels,
- * ReadPixels, Bitmap, span functions, and CopyTexImage, etc commands.
- * These are a suitable place for grabbing/releasing hardware locks.
- */
-
- void (*RenderPrimitive)(GLcontext *ctx, GLenum mode);
- /* Called between RednerStart() and RenderFinish() to indicate the
- * type of primitive we're about to draw. Mode will be one of the
- * modes accepted by glBegin().
- */
/***
- *** Parameters for _tnl_render_stage
+ *** Support for multiple t&l engines
***/
- points_func PointsFunc; /* must now respect vb->elts */
- line_func LineFunc;
- triangle_func TriangleFunc;
- quad_func QuadFunc;
- /* These functions are called in order to render points, lines,
- * triangles and quads. These are only called via the T&L module.
- */
- render_func *RenderTabVerts;
- render_func *RenderTabElts;
- /* XXX Description???
+ GLuint NeedValidate;
+ /* Bitmask of state changes that require the current tnl module to be
+ * validated, using ValidateTnlModule() below.
*/
- void (*ResetLineStipple)( GLcontext *ctx );
- /* Reset the hardware's line stipple counter.
- */
-
- void (*BuildProjectedVertices)( GLcontext *ctx,
- GLuint start, GLuint end,
- GLuint new_inputs);
- /* This function is called whenever new vertices are required for
- * rendering. The vertices in question are those n such that start
- * <= n < end. The new_inputs parameter indicates those fields of
- * the vertex which need to be updated, if only a partial repair of
- * the vertex is required.
+ void (*ValidateTnlModule)( GLcontext *ctx, GLuint new_state );
+ /* Validate the current tnl module. This is called directly after
+ * UpdateState() when a state change that has occured matches the
+ * NeedValidate bitmask above. This ensures all computed values are
+ * up to date, thus allowing the driver to decide if the current tnl
+ * module needs to be swapped out.
*
- * This function is called only from _tnl_render_stage in tnl/t_render.c.
+ * This must be non-NULL if a driver installs a custom tnl module and
+ * sets the NeedValidate bitmask, but may be NULL otherwise.
*/
- GLboolean (*MultipassFunc)( GLcontext *ctx, GLuint passno );
- /* Driver may request additional render passes by returning GL_TRUE
- * when this function is called. This function will be called
- * after the first pass, and passes will be made until the function
- * returns GL_FALSE. If no function is registered, only one pass
- * is made.
- *
- * This function will be first invoked with passno == 1.
- */
-
-
- /***
- *** Support for multiple t&l engines
- ***/
#define PRIM_OUTSIDE_BEGIN_END GL_POLYGON+1
#define PRIM_INSIDE_UNKNOWN_PRIM GL_POLYGON+2
#define PRIM_UNKNOWN GL_POLYGON+3
-
+
GLuint CurrentExecPrimitive;
- /* Set by the driver-supplied t&l engine. Set to GL_POLYGON+1 when
- * outside begin/end.
+ /* Set by the driver-supplied t&l engine. Set to
+ * PRIM_OUTSIDE_BEGIN_END when outside begin/end.
*/
GLuint CurrentSavePrimitive;
- /* Current state of an inprogress compilation.
+ /* Current state of an in-progress compilation. May take on any of
+ * the additional values defined above.
*/
-
#define FLUSH_STORED_VERTICES 0x1
#define FLUSH_UPDATE_CURRENT 0x2
/* Set by the driver-supplied t&l engine whenever vertices are
* buffered between begin/end objects or ctx->Current is not uptodate.
*
- * The FlushVertices() call below may be used to resolve
- * these conditions.
+ * The FlushVertices() call below may be used to resolve
+ * these conditions.
*/
void (*FlushVertices)( GLcontext *ctx, GLuint flags );
- /* If inside begin/end, ASSERT(0).
- * Otherwise,
+ /* If inside begin/end, ASSERT(0).
+ * Otherwise,
* if (flags & FLUSH_STORED_VERTICES) flushes any buffered vertices,
- * if (flags & FLUSH_UPDATE_CURRENT) updates ctx->Current
+ * if (flags & FLUSH_UPDATE_CURRENT) updates ctx->Current
* and ctx->Light.Material
- * returns GL_TRUE.
*
* Note that the default t&l engine never clears the
* FLUSH_UPDATE_CURRENT bit, even after performing the update.
void (*LightingSpaceChange)( GLcontext *ctx );
/* Notify driver that the special derived value _NeedEyeCoords has
- * changed.
+ * changed.
*/
void (*NewList)( GLcontext *ctx, GLuint list, GLenum mode );
* Called by glCallList(s), but not recursively.
*/
- void (*MakeCurrent)( GLcontext *ctx, GLframebuffer *drawBuffer,
+ void (*MakeCurrent)( GLcontext *ctx, GLframebuffer *drawBuffer,
GLframebuffer *readBuffer );
/* Let the t&l component know when the context becomes current.
*/
void (*FogCoordfvEXT)( const GLfloat * );
void (*Indexi)( GLint );
void (*Indexiv)( const GLint * );
- void (*Materialfv)( GLenum face, GLenum pname, const GLfloat * ); /* NOTE */
+ void (*Materialfv)( GLenum face, GLenum pname, const GLfloat * ); /* NOTE */
void (*MultiTexCoord1fARB)( GLenum, GLfloat );
void (*MultiTexCoord1fvARB)( GLenum, const GLfloat * );
void (*MultiTexCoord2fARB)( GLenum, GLfloat, GLfloat );
void (*End)( void );
/* Drivers present a reduced set of the functions possible in
* begin/end objects. Core mesa provides translation stubs for the
- * remaining functions to map down to these entrypoints.
+ * remaining functions to map down to these entrypoints.
*
* These are the initial values to be installed into dispatch by
* mesa. If the t&l driver wants to modify the dispatch table
*
* If the driver wants to hook in entrypoints other than those
* listed above, it must restore them to their original values in
- * the disable() callback, below.
+ * the disable() callback, below.
*/
void (*Rectf)( GLfloat, GLfloat, GLfloat, GLfloat );
- /*
+ /*
*/
-
void (*DrawArrays)( GLenum mode, GLint start, GLsizei count );
- void (*DrawElements)( GLenum mode, GLsizei count, GLenum type,
+ void (*DrawElements)( GLenum mode, GLsizei count, GLenum type,
const GLvoid *indices );
- void (*DrawRangeElements)(GLenum mode, GLuint start,
- GLuint end, GLsizei count,
- GLenum type, const GLvoid *indices);
+ void (*DrawRangeElements)( GLenum mode, GLuint start,
+ GLuint end, GLsizei count,
+ GLenum type, const GLvoid *indices );
/* These may or may not belong here. Heuristic: If an array is
* enabled, the installed vertex format should support that array and
* it's current size natively.
* provide partial t&l acceleration.
*
* Mesa will provide a set of helper functions to do eval within
- * accelerated vertex formats, eventually...
- *
- * Update: There seem to be issues re. maintaining correct values
- * for 'ctx->Current' in the face of Eval and T&L fallbacks...
+ * accelerated vertex formats, eventually...
*/
GLboolean prefer_float_colors;
- /* Should core send non-standard colors to glColor4f or glColor4ub
+ /* Should core try to send colors to glColor4f or glColor4chan,
+ * where it has a choice?
*/
-
-
} GLvertexformat;
-#endif
-
+#endif /* DD_INCLUDED */
projects / mesa.git / blobdiff