From ff938bf059a41a9bdf4c2c93cebe4a3b8a89c201 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Fri, 21 Mar 2008 13:43:07 -0600 Subject: add a number of PBO validate/map/unmap functions Helper functions for (some) drivers, including swrast. cherry-picked from Mesa/master --- src/mesa/main/bufferobj.c | 187 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 185 insertions(+), 2 deletions(-) (limited to 'src/mesa/main/bufferobj.c') diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c index 009055a6ab6..71e571353f2 100644 --- a/src/mesa/main/bufferobj.c +++ b/src/mesa/main/bufferobj.c @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.5.1 + * Version: 7.1 * - * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2008 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"), @@ -469,6 +469,189 @@ _mesa_validate_pbo_access(GLuint dimensions, } +/** + * If the source of glBitmap data is a PBO, check that we won't read out + * of buffer bounds, then map the buffer. + * If not sourcing from a PBO, just return the bitmap pointer. + * This is a helper function for (some) drivers. + * Return NULL if error. + * If non-null return, must call validate_and_map_bitmap_pbo() when done. + */ +const GLubyte * +_mesa_validate_and_map_bitmap_pbo(GLcontext *ctx, + GLsizei width, GLsizei height, + const struct gl_pixelstore_attrib *unpack, + const GLubyte *bitmap) +{ + const GLubyte *buf; + + if (unpack->BufferObj->Name) { + /* unpack from PBO */ + if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, + GL_COLOR_INDEX, GL_BITMAP, + (GLvoid *) bitmap)) { + _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)"); + return NULL; + } + + if (unpack->BufferObj->Pointer) { + /* buffer is already mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)"); + return NULL; + } + + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + GL_READ_ONLY_ARB, + unpack->BufferObj); + if (!buf) + return NULL; + + buf = ADD_POINTERS(buf, bitmap); + } + else { + /* unpack from normal memory */ + buf = bitmap; + } + + return buf; +} + + +/** + * Counterpart to validate_and_map_bitmap_pbo() + * This is a helper function for (some) drivers. + */ +void +_mesa_unmap_bitmap_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *unpack) +{ + if (unpack->BufferObj->Name) { + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + unpack->BufferObj); + } +} + + +/** + * \sa _mesa_validate_and_map_bitmap_pbo + */ +const GLvoid * +_mesa_validate_and_map_drawpix_pbo(GLcontext *ctx, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *unpack, + const GLvoid *pixels) +{ + const GLvoid *buf; + + if (unpack->BufferObj->Name) { + /* unpack from PBO */ + + if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, + format, type, pixels)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glDrawPixels(invalid PBO access)"); + return NULL; + } + + if (unpack->BufferObj->Pointer) { + /* buffer is already mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels(PBO is mapped)"); + return NULL; + } + + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + GL_READ_ONLY_ARB, + unpack->BufferObj); + if (!buf) + return NULL; + + buf = ADD_POINTERS(buf, pixels); + } + else { + /* unpack from normal memory */ + buf = pixels; + } + + return buf; +} + + +/** + * \sa _mesa_unmap_bitmap_pbo + */ +void +_mesa_unmap_drapix_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *unpack) +{ + if (unpack->BufferObj->Name) { + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + unpack->BufferObj); + } +} + + +/** + * When doing glReadPixels into a PBO, this function will check for errors + * and map the buffer. + * Call _mesa_unmap_readpix_pbo() when finished + * \return NULL if error + */ +void * +_mesa_validate_and_map_readpix_pbo(GLcontext *ctx, + GLint x, GLint y, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *pack, + GLvoid *dest) +{ + void *buf; + + if (pack->BufferObj->Name) { + /* pack into PBO */ + if (!_mesa_validate_pbo_access(2, pack, width, height, 1, + format, type, dest)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glReadPixels(invalid PBO access)"); + return NULL; + } + + if (pack->BufferObj->Pointer) { + /* buffer is already mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)"); + return NULL; + } + + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + GL_WRITE_ONLY_ARB, + pack->BufferObj); + if (!buf) + return NULL; + + buf = ADD_POINTERS(buf, dest); + } + else { + /* pack to normal memory */ + buf = dest; + } + + return buf; +} + + +/** + * Counterpart to validate_and_map_readpix_pbo() + */ +void +_mesa_unmap_readpix_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *pack) +{ + if (pack->BufferObj->Name) { + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, pack->BufferObj); + } +} + + /** * Return the gl_buffer_object for the given ID. * Always return NULL for ID 0. -- cgit v1.2.3 From a39091bc5b68e4d4f5302f1d3f1a138798f54b77 Mon Sep 17 00:00:00 2001 From: Brian Date: Fri, 21 Mar 2008 14:20:07 -0600 Subject: Refactor PBO validate/map code. We always need to do PBO validation, so do that in core Mesa before calling driv er routine. cherry-picked from Mesa/master. --- src/mesa/main/bufferobj.c | 76 ++++++------------------------- src/mesa/main/bufferobj.h | 24 ++++------ src/mesa/main/drawpix.c | 50 ++++++++++++++++++++ src/mesa/state_tracker/st_cb_bitmap.c | 3 +- src/mesa/state_tracker/st_cb_drawpixels.c | 4 +- src/mesa/state_tracker/st_cb_readpixels.c | 4 +- src/mesa/swrast/s_bitmap.c | 8 ++-- src/mesa/swrast/s_drawpix.c | 3 +- src/mesa/swrast/s_readpix.c | 4 +- 9 files changed, 82 insertions(+), 94 deletions(-) (limited to 'src/mesa/main/bufferobj.c') diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c index 71e571353f2..e762eb3b634 100644 --- a/src/mesa/main/bufferobj.c +++ b/src/mesa/main/bufferobj.c @@ -475,31 +475,17 @@ _mesa_validate_pbo_access(GLuint dimensions, * If not sourcing from a PBO, just return the bitmap pointer. * This is a helper function for (some) drivers. * Return NULL if error. - * If non-null return, must call validate_and_map_bitmap_pbo() when done. + * If non-null return, must call _mesa_unmap_bitmap_pbo() when done. */ const GLubyte * -_mesa_validate_and_map_bitmap_pbo(GLcontext *ctx, - GLsizei width, GLsizei height, - const struct gl_pixelstore_attrib *unpack, - const GLubyte *bitmap) +_mesa_map_bitmap_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *unpack, + const GLubyte *bitmap) { const GLubyte *buf; if (unpack->BufferObj->Name) { /* unpack from PBO */ - if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, - GL_COLOR_INDEX, GL_BITMAP, - (GLvoid *) bitmap)) { - _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)"); - return NULL; - } - - if (unpack->BufferObj->Pointer) { - /* buffer is already mapped - that's an error */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)"); - return NULL; - } - buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, GL_READ_ONLY_ARB, unpack->BufferObj); @@ -518,7 +504,7 @@ _mesa_validate_and_map_bitmap_pbo(GLcontext *ctx, /** - * Counterpart to validate_and_map_bitmap_pbo() + * Counterpart to _mesa_map_bitmap_pbo() * This is a helper function for (some) drivers. */ void @@ -533,33 +519,17 @@ _mesa_unmap_bitmap_pbo(GLcontext *ctx, /** - * \sa _mesa_validate_and_map_bitmap_pbo + * \sa _mesa_map_bitmap_pbo */ const GLvoid * -_mesa_validate_and_map_drawpix_pbo(GLcontext *ctx, - GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels) +_mesa_map_drawpix_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *unpack, + const GLvoid *pixels) { const GLvoid *buf; if (unpack->BufferObj->Name) { /* unpack from PBO */ - - if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, - format, type, pixels)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glDrawPixels(invalid PBO access)"); - return NULL; - } - - if (unpack->BufferObj->Pointer) { - /* buffer is already mapped - that's an error */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels(PBO is mapped)"); - return NULL; - } - buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, GL_READ_ONLY_ARB, unpack->BufferObj); @@ -592,36 +562,19 @@ _mesa_unmap_drapix_pbo(GLcontext *ctx, /** - * When doing glReadPixels into a PBO, this function will check for errors - * and map the buffer. + * If PBO is bound, map the buffer, return dest pointer in mapped buffer. * Call _mesa_unmap_readpix_pbo() when finished * \return NULL if error */ void * -_mesa_validate_and_map_readpix_pbo(GLcontext *ctx, - GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *pack, - GLvoid *dest) +_mesa_map_readpix_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *pack, + GLvoid *dest) { void *buf; if (pack->BufferObj->Name) { /* pack into PBO */ - if (!_mesa_validate_pbo_access(2, pack, width, height, 1, - format, type, dest)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glReadPixels(invalid PBO access)"); - return NULL; - } - - if (pack->BufferObj->Pointer) { - /* buffer is already mapped - that's an error */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)"); - return NULL; - } - buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, GL_WRITE_ONLY_ARB, pack->BufferObj); @@ -640,7 +593,7 @@ _mesa_validate_and_map_readpix_pbo(GLcontext *ctx, /** - * Counterpart to validate_and_map_readpix_pbo() + * Counterpart to _mesa_map_readpix_pbo() */ void _mesa_unmap_readpix_pbo(GLcontext *ctx, @@ -652,6 +605,7 @@ _mesa_unmap_readpix_pbo(GLcontext *ctx, } + /** * Return the gl_buffer_object for the given ID. * Always return NULL for ID 0. diff --git a/src/mesa/main/bufferobj.h b/src/mesa/main/bufferobj.h index efb3b4711e1..46525f08ae3 100644 --- a/src/mesa/main/bufferobj.h +++ b/src/mesa/main/bufferobj.h @@ -87,21 +87,18 @@ _mesa_validate_pbo_access(GLuint dimensions, GLenum format, GLenum type, const GLvoid *ptr); extern const GLubyte * -_mesa_validate_and_map_bitmap_pbo(GLcontext *ctx, - GLsizei width, GLsizei height, - const struct gl_pixelstore_attrib *unpack, - const GLubyte *bitmap); +_mesa_map_bitmap_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *unpack, + const GLubyte *bitmap); extern void _mesa_unmap_bitmap_pbo(GLcontext *ctx, const struct gl_pixelstore_attrib *unpack); extern const GLvoid * -_mesa_validate_and_map_drawpix_pbo(GLcontext *ctx, - GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels); +_mesa_map_drawpix_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *unpack, + const GLvoid *pixels); extern void _mesa_unmap_drapix_pbo(GLcontext *ctx, @@ -109,12 +106,9 @@ _mesa_unmap_drapix_pbo(GLcontext *ctx, extern void * -_mesa_validate_and_map_readpix_pbo(GLcontext *ctx, - GLint x, GLint y, - GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *pack, - GLvoid *dest); +_mesa_map_readpix_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *pack, + GLvoid *dest); extern void _mesa_unmap_readpix_pbo(GLcontext *ctx, diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c index 5df55ef0c9e..0f64f1c1c0c 100644 --- a/src/mesa/main/drawpix.c +++ b/src/mesa/main/drawpix.c @@ -24,6 +24,7 @@ #include "glheader.h" #include "imports.h" +#include "bufferobj.h" #include "context.h" #include "drawpix.h" #include "feedback.h" @@ -183,6 +184,23 @@ _mesa_DrawPixels( GLsizei width, GLsizei height, /* Round, to satisfy conformance tests (matches SGI's OpenGL) */ GLint x = IROUND(ctx->Current.RasterPos[0]); GLint y = IROUND(ctx->Current.RasterPos[1]); + + if (ctx->Unpack.BufferObj->Name) { + /* unpack from PBO */ + if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1, + format, type, pixels)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glDrawPixels(invalid PBO access)"); + return; + } + if (ctx->Unpack.BufferObj->Pointer) { + /* buffer is mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, + "glDrawPixels(PBO is mapped)"); + return; + } + } + ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type, &ctx->Unpack, pixels); } @@ -303,6 +321,21 @@ _mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height, return; } + if (ctx->Pack.BufferObj->Name) { + if (!_mesa_validate_pbo_access(2, &ctx->Pack, width, height, 1, + format, type, pixels)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glReadPixels(invalid PBO access)"); + return; + } + + if (ctx->Pack.BufferObj->Pointer) { + /* buffer is mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)"); + return; + } + } + ctx->Driver.ReadPixels(ctx, x, y, width, height, format, type, &ctx->Pack, pixels); } @@ -346,6 +379,23 @@ _mesa_Bitmap( GLsizei width, GLsizei height, /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */ GLint x = IFLOOR(ctx->Current.RasterPos[0] - xorig); GLint y = IFLOOR(ctx->Current.RasterPos[1] - yorig); + + if (ctx->Unpack.BufferObj->Name) { + /* unpack from PBO */ + if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1, + GL_COLOR_INDEX, GL_BITMAP, + (GLvoid *) bitmap)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBitmap(invalid PBO access)"); + return; + } + if (ctx->Unpack.BufferObj->Pointer) { + /* buffer is mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)"); + return; + } + } + ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap ); } #if _HAVE_FULL_GL diff --git a/src/mesa/state_tracker/st_cb_bitmap.c b/src/mesa/state_tracker/st_cb_bitmap.c index 4e23db0edcc..acc22d4323c 100644 --- a/src/mesa/state_tracker/st_cb_bitmap.c +++ b/src/mesa/state_tracker/st_cb_bitmap.c @@ -225,8 +225,7 @@ make_bitmap_texture(GLcontext *ctx, GLsizei width, GLsizei height, } /* PBO source... */ - bitmap = _mesa_validate_and_map_bitmap_pbo(ctx, width, height, - unpack, bitmap); + bitmap = _mesa_map_bitmap_pbo(ctx, unpack, bitmap); if (!bitmap) { return NULL; } diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c index c0f8e5ffdd7..2ebaf8a2c31 100644 --- a/src/mesa/state_tracker/st_cb_drawpixels.c +++ b/src/mesa/state_tracker/st_cb_drawpixels.c @@ -335,9 +335,7 @@ make_texture(struct st_context *st, assert(pipeFormat); cpp = st_sizeof_format(pipeFormat); - pixels = _mesa_validate_and_map_drawpix_pbo(ctx, width, height, - format, type, - unpack, pixels); + pixels = _mesa_map_drawpix_pbo(ctx, unpack, pixels); if (!pixels) return NULL; diff --git a/src/mesa/state_tracker/st_cb_readpixels.c b/src/mesa/state_tracker/st_cb_readpixels.c index b22e846a157..4cf9adcd28a 100644 --- a/src/mesa/state_tracker/st_cb_readpixels.c +++ b/src/mesa/state_tracker/st_cb_readpixels.c @@ -155,9 +155,7 @@ st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, return; } - dest = _mesa_validate_and_map_readpix_pbo(ctx, x, y, width, height, - format, type, - &clippedPacking, dest); + dest = _mesa_map_readpix_pbo(ctx, &clippedPacking, dest); if (!dest) return; diff --git a/src/mesa/swrast/s_bitmap.c b/src/mesa/swrast/s_bitmap.c index 17f639fd557..f3dda12e252 100644 --- a/src/mesa/swrast/s_bitmap.c +++ b/src/mesa/swrast/s_bitmap.c @@ -57,11 +57,9 @@ _swrast_Bitmap( GLcontext *ctx, GLint px, GLint py, ASSERT(ctx->RenderMode == GL_RENDER); - bitmap = _mesa_validate_and_map_bitmap_pbo(ctx, width, height, - unpack, bitmap); - if (!bitmap) { - return NULL; - } + bitmap = _mesa_map_bitmap_pbo(ctx, unpack, bitmap); + if (!bitmap) + return; RENDER_START(swrast,ctx); diff --git a/src/mesa/swrast/s_drawpix.c b/src/mesa/swrast/s_drawpix.c index 2cf3501274f..fb04d9f746a 100644 --- a/src/mesa/swrast/s_drawpix.c +++ b/src/mesa/swrast/s_drawpix.c @@ -834,8 +834,7 @@ _swrast_DrawPixels( GLcontext *ctx, if (swrast->NewState) _swrast_validate_derived( ctx ); - pixels = _mesa_validate_and_map_drawpix_pbo(ctx, x, y, width, height, - format, type, unpack, pixels); + pixels = _mesa_map_drawpix_pbo(ctx, unpack, pixels); if (!pixels) return; diff --git a/src/mesa/swrast/s_readpix.c b/src/mesa/swrast/s_readpix.c index f4f882ae840..2f155d0b705 100644 --- a/src/mesa/swrast/s_readpix.c +++ b/src/mesa/swrast/s_readpix.c @@ -572,9 +572,7 @@ _swrast_ReadPixels( GLcontext *ctx, goto end; } - pixels = _mesa_validate_and_map_readpix_pbo(ctx, x, y, width, height, - format, type, - &clippedPacking, pixels); + pixels = _mesa_map_readpix_pbo(ctx, &clippedPacking, pixels); if (!pixels) return; -- cgit v1.2.3