diff options
Diffstat (limited to 'src/mesa/main/bufferobj.c')
| -rw-r--r-- | src/mesa/main/bufferobj.c | 211 |
1 files changed, 194 insertions, 17 deletions
diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c index 1f2070ef473..3e011ef5b23 100644 --- a/src/mesa/main/bufferobj.c +++ b/src/mesa/main/bufferobj.c @@ -1,9 +1,9 @@ /* * Mesa 3-D graphics library - * Version: 7.5 + * Version: 7.6 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. - * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. 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"), @@ -73,6 +73,16 @@ get_buffer(GLcontext *ctx, GLenum target) case GL_PIXEL_UNPACK_BUFFER_EXT: bufObj = ctx->Unpack.BufferObj; break; + case GL_COPY_READ_BUFFER: + if (ctx->Extensions.ARB_copy_buffer) { + bufObj = ctx->CopyReadBuffer; + } + break; + case GL_COPY_WRITE_BUFFER: + if (ctx->Extensions.ARB_copy_buffer) { + bufObj = ctx->CopyWriteBuffer; + } + break; default: /* error must be recorded by caller */ return NULL; @@ -419,6 +429,37 @@ _mesa_buffer_unmap( GLcontext *ctx, GLenum target, /** + * Default fallback for \c dd_function_table::CopyBufferSubData(). + * Called via glCopyBuffserSubData(). + */ +void +_mesa_copy_buffer_subdata(GLcontext *ctx, + struct gl_buffer_object *src, + struct gl_buffer_object *dst, + GLintptr readOffset, GLintptr writeOffset, + GLsizeiptr size) +{ + GLubyte *srcPtr, *dstPtr; + + /* buffer should not already be mapped */ + assert(!src->Pointer); + assert(!dst->Pointer); + + srcPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_READ_BUFFER, + GL_READ_ONLY, src); + dstPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_WRITE_BUFFER, + GL_WRITE_ONLY, dst); + + if (srcPtr && dstPtr) + _mesa_memcpy(dstPtr + writeOffset, srcPtr + readOffset, size); + + ctx->Driver.UnmapBuffer(ctx, GL_COPY_READ_BUFFER, src); + ctx->Driver.UnmapBuffer(ctx, GL_COPY_WRITE_BUFFER, dst); +} + + + +/** * Initialize the state associated with buffer objects */ void @@ -426,6 +467,9 @@ _mesa_init_buffer_objects( GLcontext *ctx ) { ctx->Array.ArrayBufferObj = ctx->Shared->NullBufferObj; ctx->Array.ElementArrayBufferObj = ctx->Shared->NullBufferObj; + + ctx->CopyReadBuffer = ctx->Shared->NullBufferObj; + ctx->CopyWriteBuffer = ctx->Shared->NullBufferObj; } @@ -452,8 +496,22 @@ bind_buffer_object(GLcontext *ctx, GLenum target, GLuint buffer) case GL_PIXEL_UNPACK_BUFFER_EXT: bindTarget = &ctx->Unpack.BufferObj; break; + case GL_COPY_READ_BUFFER: + if (ctx->Extensions.ARB_copy_buffer) { + bindTarget = &ctx->CopyReadBuffer; + } + break; + case GL_COPY_WRITE_BUFFER: + if (ctx->Extensions.ARB_copy_buffer) { + bindTarget = &ctx->CopyWriteBuffer; + } + break; default: - _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target)"); + ; /* no-op / we'll hit the follow error test next */ + } + + if (!bindTarget) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target 0x%x)"); return; } @@ -490,7 +548,7 @@ bind_buffer_object(GLcontext *ctx, GLenum target, GLuint buffer) _mesa_reference_buffer_object(ctx, bindTarget, newBufObj); /* Pass BindBuffer call to device driver */ - if (ctx->Driver.BindBuffer && newBufObj) + if (ctx->Driver.BindBuffer) ctx->Driver.BindBuffer( ctx, target, newBufObj ); } @@ -779,6 +837,7 @@ _mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids) for (i = 0; i < n; i++) { struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, ids[i]); if (bufObj) { + struct gl_array_object *arrayObj = ctx->Array.ArrayObj; GLuint j; ASSERT(bufObj->Name == ids[i]); @@ -791,18 +850,19 @@ _mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids) } /* unbind any vertex pointers bound to this buffer */ - unbind(ctx, &ctx->Array.ArrayObj->Vertex.BufferObj, bufObj); - unbind(ctx, &ctx->Array.ArrayObj->Normal.BufferObj, bufObj); - unbind(ctx, &ctx->Array.ArrayObj->Color.BufferObj, bufObj); - unbind(ctx, &ctx->Array.ArrayObj->SecondaryColor.BufferObj, bufObj); - unbind(ctx, &ctx->Array.ArrayObj->FogCoord.BufferObj, bufObj); - unbind(ctx, &ctx->Array.ArrayObj->Index.BufferObj, bufObj); - unbind(ctx, &ctx->Array.ArrayObj->EdgeFlag.BufferObj, bufObj); - for (j = 0; j < MAX_TEXTURE_COORD_UNITS; j++) { - unbind(ctx, &ctx->Array.ArrayObj->TexCoord[j].BufferObj, bufObj); + unbind(ctx, &arrayObj->Vertex.BufferObj, bufObj); + unbind(ctx, &arrayObj->Weight.BufferObj, bufObj); + unbind(ctx, &arrayObj->Normal.BufferObj, bufObj); + unbind(ctx, &arrayObj->Color.BufferObj, bufObj); + unbind(ctx, &arrayObj->SecondaryColor.BufferObj, bufObj); + unbind(ctx, &arrayObj->FogCoord.BufferObj, bufObj); + unbind(ctx, &arrayObj->Index.BufferObj, bufObj); + unbind(ctx, &arrayObj->EdgeFlag.BufferObj, bufObj); + for (j = 0; j < Elements(arrayObj->TexCoord); j++) { + unbind(ctx, &arrayObj->TexCoord[j].BufferObj, bufObj); } - for (j = 0; j < VERT_ATTRIB_MAX; j++) { - unbind(ctx, &ctx->Array.ArrayObj->VertexAttrib[j].BufferObj, bufObj); + for (j = 0; j < Elements(arrayObj->VertexAttrib); j++) { + unbind(ctx, &arrayObj->VertexAttrib[j].BufferObj, bufObj); } if (ctx->Array.ArrayBufferObj == bufObj) { @@ -937,7 +997,7 @@ _mesa_BufferDataARB(GLenum target, GLsizeiptrARB size, return; } if (bufObj->Name == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glBufferDataARB" ); + _mesa_error(ctx, GL_INVALID_OPERATION, "glBufferDataARB(buffer 0)" ); return; } @@ -954,6 +1014,11 @@ _mesa_BufferDataARB(GLenum target, GLsizeiptrARB size, bufObj->Written = GL_TRUE; +#ifdef VBO_DEBUG + _mesa_printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n", + bufObj->Name, size, data, usage); +#endif + /* Give the buffer object to the driver! <data> may be null! */ ctx->Driver.BufferData( ctx, target, size, data, usage, bufObj ); } @@ -1025,7 +1090,7 @@ _mesa_MapBufferARB(GLenum target, GLenum access) return NULL; } if (bufObj->Name == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB" ); + _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(buffer 0)" ); return NULL; } if (bufObj->Pointer) { @@ -1043,6 +1108,17 @@ _mesa_MapBufferARB(GLenum target, GLenum access) if (access == GL_WRITE_ONLY_ARB || access == GL_READ_WRITE_ARB) bufObj->Written = GL_TRUE; +#ifdef VBO_DEBUG + _mesa_printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n", + bufObj->Name, bufObj->Size, access); + if (access == GL_WRITE_ONLY_ARB) { + GLuint i; + GLubyte *b = (GLubyte *) bufObj->Pointer; + for (i = 0; i < bufObj->Size; i++) + b[i] = i & 0xff; + } +#endif + return bufObj->Pointer; } @@ -1069,6 +1145,26 @@ _mesa_UnmapBufferARB(GLenum target) return GL_FALSE; } +#ifdef VBO_DEBUG + if (bufObj->Access == GL_WRITE_ONLY_ARB) { + GLuint i, unchanged = 0; + GLubyte *b = (GLubyte *) bufObj->Pointer; + GLint pos = -1; + /* check which bytes changed */ + for (i = 0; i < bufObj->Size - 1; i++) { + if (b[i] == (i & 0xff) && b[i+1] == ((i+1) & 0xff)) { + unchanged++; + if (pos == -1) + pos = i; + } + } + if (unchanged) { + _mesa_printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n", + bufObj->Name, unchanged, bufObj->Size, pos); + } + } +#endif + status = ctx->Driver.UnmapBuffer( ctx, target, bufObj ); bufObj->Access = DEFAULT_ACCESS; bufObj->Pointer = NULL; @@ -1138,3 +1234,84 @@ _mesa_GetBufferPointervARB(GLenum target, GLenum pname, GLvoid **params) *params = bufObj->Pointer; } + + +void GLAPIENTRY +_mesa_CopyBufferSubData(GLenum readTarget, GLenum writeTarget, + GLintptr readOffset, GLintptr writeOffset, + GLsizeiptr size) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_buffer_object *src, *dst; + ASSERT_OUTSIDE_BEGIN_END(ctx); + + src = get_buffer(ctx, readTarget); + if (!src || src->Name == 0) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glCopyBuffserSubData(readTarget = 0x%x)", readTarget); + return; + } + + dst = get_buffer(ctx, writeTarget); + if (!dst || dst->Name == 0) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget); + return; + } + + if (src->Pointer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyBuffserSubData(readBuffer is mapped)"); + return; + } + + if (dst->Pointer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyBuffserSubData(writeBuffer is mapped)"); + return; + } + + if (readOffset < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyBuffserSubData(readOffset = %d)", readOffset); + return; + } + + if (writeOffset < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyBuffserSubData(writeOffset = %d)", writeOffset); + return; + } + + if (readOffset + size > src->Size) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyBuffserSubData(readOffset + size = %d)", + readOffset, size); + return; + } + + if (writeOffset + size > dst->Size) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyBuffserSubData(writeOffset + size = %d)", + writeOffset, size); + return; + } + + if (src == dst) { + if (readOffset + size <= writeOffset) { + /* OK */ + } + else if (writeOffset + size <= readOffset) { + /* OK */ + } + else { + /* overlapping src/dst is illegal */ + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyBuffserSubData(overlapping src/dst)"); + return; + } + } + + ctx->Driver.CopyBufferSubData(ctx, src, dst, readOffset, writeOffset, size); +} + |