From 96d6df5da9cddedf4931bf8e17f96e242467c661 Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 27 Apr 2011 06:58:32 +0000 Subject: xserver libX11 libxtrans mesa pixman xkeyboard-config git update 27 Apr 2011 --- mesalib/src/mesa/main/depthstencil.c | 1667 +++++++++++++++++----------------- 1 file changed, 835 insertions(+), 832 deletions(-) (limited to 'mesalib/src/mesa/main/depthstencil.c') diff --git a/mesalib/src/mesa/main/depthstencil.c b/mesalib/src/mesa/main/depthstencil.c index a1f206b9c..ab62c97fe 100644 --- a/mesalib/src/mesa/main/depthstencil.c +++ b/mesalib/src/mesa/main/depthstencil.c @@ -1,832 +1,835 @@ -/* - * Mesa 3-D graphics library - * Version: 6.5 - * - * Copyright (C) 1999-2006 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 - * 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. - */ - -#include "glheader.h" -#include "imports.h" -#include "context.h" -#include "formats.h" -#include "mtypes.h" -#include "depthstencil.h" -#include "renderbuffer.h" - - -/** - * Adaptor/wrappers for GL_DEPTH_STENCIL renderbuffers. - * - * The problem with a GL_DEPTH_STENCIL renderbuffer is that sometimes we - * want to treat it as a stencil buffer, other times we want to treat it - * as a depth/z buffer and still other times when we want to treat it as - * a combined Z+stencil buffer! That implies we need three different sets - * of Get/Put functions. - * - * We solve this by wrapping the Z24_S8 or S8_Z24 renderbuffer with depth and - * stencil adaptors, each with the right kind of depth/stencil Get/Put functions. - */ - - -static void * -nop_get_pointer(struct gl_context *ctx, struct gl_renderbuffer *rb, GLint x, GLint y) -{ - (void) ctx; - (void) rb; - (void) x; - (void) y; - return NULL; -} - - -/** - * Delete a depth or stencil wrapper renderbuffer. - */ -static void -delete_wrapper(struct gl_renderbuffer *rb) -{ - ASSERT(rb->Format == MESA_FORMAT_S8 || - rb->Format == MESA_FORMAT_X8_Z24); - _mesa_reference_renderbuffer(&rb->Wrapped, NULL); - free(rb); -} - - -/** - * Realloc storage for wrapper. - */ -static GLboolean -alloc_wrapper_storage(struct gl_context *ctx, struct gl_renderbuffer *rb, - GLenum internalFormat, GLuint width, GLuint height) -{ - /* just pass this on to the wrapped renderbuffer */ - struct gl_renderbuffer *dsrb = rb->Wrapped; - GLboolean retVal; - - (void) internalFormat; - - ASSERT(dsrb->Format == MESA_FORMAT_Z24_S8 || - dsrb->Format == MESA_FORMAT_Z24_X8 || - dsrb->Format == MESA_FORMAT_S8_Z24 || - dsrb->Format == MESA_FORMAT_X8_Z24); - - retVal = dsrb->AllocStorage(ctx, dsrb, dsrb->InternalFormat, width, height); - if (retVal) { - rb->Width = width; - rb->Height = height; - } - return retVal; -} - - - - -/*====================================================================== - * Depth wrapper around depth/stencil renderbuffer - */ - -static void -get_row_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, - GLint x, GLint y, void *values) -{ - struct gl_renderbuffer *dsrb = z24rb->Wrapped; - GLuint temp[MAX_WIDTH], i; - GLuint *dst = (GLuint *) values; - const GLuint *src = (const GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); - ASSERT(z24rb->DataType == GL_UNSIGNED_INT); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - if (!src) { - dsrb->GetRow(ctx, dsrb, count, x, y, temp); - src = temp; - } - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - dst[i] = src[i] >> 8; - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - dst[i] = src[i] & 0xffffff; - } - } -} - -static void -get_values_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, - const GLint x[], const GLint y[], void *values) -{ - struct gl_renderbuffer *dsrb = z24rb->Wrapped; - GLuint temp[MAX_WIDTH], i; - GLuint *dst = (GLuint *) values; - ASSERT(z24rb->DataType == GL_UNSIGNED_INT); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - ASSERT(count <= MAX_WIDTH); - /* don't bother trying direct access */ - dsrb->GetValues(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - dst[i] = temp[i] >> 8; - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - dst[i] = temp[i] & 0xffffff; - } - } -} - -static void -put_row_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, - GLint x, GLint y, const void *values, const GLubyte *mask) -{ - struct gl_renderbuffer *dsrb = z24rb->Wrapped; - const GLuint *src = (const GLuint *) values; - GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); - ASSERT(z24rb->DataType == GL_UNSIGNED_INT); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - if (dst) { - /* direct access */ - GLuint i; - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - dst[i] = (src[i] << 8) | (dst[i] & 0xff); - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - dst[i] = (src[i] & 0xffffff) | (dst[i] & 0xff000000); - } - } - } - } - else { - /* get, modify, put */ - GLuint temp[MAX_WIDTH], i; - dsrb->GetRow(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (src[i] << 8) | (temp[i] & 0xff); - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (src[i] & 0xffffff) | (temp[i] & 0xff000000); - } - } - } - dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask); - } -} - -static void -put_mono_row_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, - GLint x, GLint y, const void *value, const GLubyte *mask) -{ - struct gl_renderbuffer *dsrb = z24rb->Wrapped; - GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); - ASSERT(z24rb->DataType == GL_UNSIGNED_INT); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - if (dst) { - /* direct access */ - GLuint i; - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - const GLuint shiftedVal = *((GLuint *) value) << 8; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - dst[i] = shiftedVal | (dst[i] & 0xff); - } - } - } - else { - const GLuint shiftedVal = *((GLuint *) value); - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - dst[i] = shiftedVal | (dst[i] & 0xff000000); - } - } - } - } - else { - /* get, modify, put */ - GLuint temp[MAX_WIDTH], i; - dsrb->GetRow(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - const GLuint shiftedVal = *((GLuint *) value) << 8; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = shiftedVal | (temp[i] & 0xff); - } - } - } - else { - const GLuint shiftedVal = *((GLuint *) value); - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = shiftedVal | (temp[i] & 0xff000000); - } - } - } - dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask); - } -} - -static void -put_values_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, - const GLint x[], const GLint y[], - const void *values, const GLubyte *mask) -{ - struct gl_renderbuffer *dsrb = z24rb->Wrapped; - const GLuint *src = (const GLuint *) values; - ASSERT(z24rb->DataType == GL_UNSIGNED_INT); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - if (dsrb->GetPointer(ctx, dsrb, 0, 0)) { - /* direct access */ - GLuint i; - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]); - *dst = (src[i] << 8) | (*dst & 0xff); - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]); - *dst = (src[i] & 0xffffff) | (*dst & 0xff000000); - } - } - } - } - else { - /* get, modify, put */ - GLuint temp[MAX_WIDTH], i; - dsrb->GetValues(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (src[i] << 8) | (temp[i] & 0xff); - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (src[i] & 0xffffff) | (temp[i] & 0xff000000); - } - } - } - dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask); - } -} - -static void -put_mono_values_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, - GLuint count, const GLint x[], const GLint y[], - const void *value, const GLubyte *mask) -{ - struct gl_renderbuffer *dsrb = z24rb->Wrapped; - GLuint temp[MAX_WIDTH], i; - /* get, modify, put */ - dsrb->GetValues(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - const GLuint shiftedVal = *((GLuint *) value) << 8; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = shiftedVal | (temp[i] & 0xff); - } - } - } - else { - const GLuint shiftedVal = *((GLuint *) value); - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = shiftedVal | (temp[i] & 0xff000000); - } - } - } - dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask); -} - - -/** - * Wrap the given GL_DEPTH_STENCIL renderbuffer so that it acts like - * a depth renderbuffer. - * \return new depth renderbuffer - */ -struct gl_renderbuffer * -_mesa_new_z24_renderbuffer_wrapper(struct gl_context *ctx, - struct gl_renderbuffer *dsrb) -{ - struct gl_renderbuffer *z24rb; - - ASSERT(dsrb->Format == MESA_FORMAT_Z24_S8 || - dsrb->Format == MESA_FORMAT_Z24_X8 || - dsrb->Format == MESA_FORMAT_S8_Z24 || - dsrb->Format == MESA_FORMAT_X8_Z24); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - - z24rb = ctx->Driver.NewRenderbuffer(ctx, 0); - if (!z24rb) - return NULL; - - /* NOTE: need to do manual refcounting here */ - z24rb->Wrapped = dsrb; - dsrb->RefCount++; - - z24rb->Name = dsrb->Name; - z24rb->RefCount = 0; - z24rb->Width = dsrb->Width; - z24rb->Height = dsrb->Height; - z24rb->InternalFormat = GL_DEPTH_COMPONENT24; - z24rb->Format = MESA_FORMAT_X8_Z24; - z24rb->_BaseFormat = GL_DEPTH_COMPONENT; - z24rb->DataType = GL_UNSIGNED_INT; - z24rb->Data = NULL; - z24rb->Delete = delete_wrapper; - z24rb->AllocStorage = alloc_wrapper_storage; - z24rb->GetPointer = nop_get_pointer; - z24rb->GetRow = get_row_z24; - z24rb->GetValues = get_values_z24; - z24rb->PutRow = put_row_z24; - z24rb->PutRowRGB = NULL; - z24rb->PutMonoRow = put_mono_row_z24; - z24rb->PutValues = put_values_z24; - z24rb->PutMonoValues = put_mono_values_z24; - - return z24rb; -} - - -/*====================================================================== - * Stencil wrapper around depth/stencil renderbuffer - */ - -static void -get_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, - GLint x, GLint y, void *values) -{ - struct gl_renderbuffer *dsrb = s8rb->Wrapped; - GLuint temp[MAX_WIDTH], i; - GLubyte *dst = (GLubyte *) values; - const GLuint *src = (const GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); - ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - if (!src) { - dsrb->GetRow(ctx, dsrb, count, x, y, temp); - src = temp; - } - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - dst[i] = src[i] & 0xff; - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - dst[i] = src[i] >> 24; - } - } -} - -static void -get_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, - const GLint x[], const GLint y[], void *values) -{ - struct gl_renderbuffer *dsrb = s8rb->Wrapped; - GLuint temp[MAX_WIDTH], i; - GLubyte *dst = (GLubyte *) values; - ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - ASSERT(count <= MAX_WIDTH); - /* don't bother trying direct access */ - dsrb->GetValues(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - dst[i] = temp[i] & 0xff; - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - dst[i] = temp[i] >> 24; - } - } -} - -static void -put_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, - GLint x, GLint y, const void *values, const GLubyte *mask) -{ - struct gl_renderbuffer *dsrb = s8rb->Wrapped; - const GLubyte *src = (const GLubyte *) values; - GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); - ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - if (dst) { - /* direct access */ - GLuint i; - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - dst[i] = (dst[i] & 0xffffff00) | src[i]; - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - dst[i] = (dst[i] & 0xffffff) | (src[i] << 24); - } - } - } - } - else { - /* get, modify, put */ - GLuint temp[MAX_WIDTH], i; - dsrb->GetRow(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (temp[i] & 0xffffff00) | src[i]; - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (temp[i] & 0xffffff) | (src[i] << 24); - } - } - } - dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask); - } -} - -static void -put_mono_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, - GLint x, GLint y, const void *value, const GLubyte *mask) -{ - struct gl_renderbuffer *dsrb = s8rb->Wrapped; - const GLubyte val = *((GLubyte *) value); - GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); - ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - if (dst) { - /* direct access */ - GLuint i; - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - dst[i] = (dst[i] & 0xffffff00) | val; - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - dst[i] = (dst[i] & 0xffffff) | (val << 24); - } - } - } - } - else { - /* get, modify, put */ - GLuint temp[MAX_WIDTH], i; - dsrb->GetRow(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (temp[i] & 0xffffff00) | val; - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (temp[i] & 0xffffff) | (val << 24); - } - } - } - dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask); - } -} - -static void -put_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, - const GLint x[], const GLint y[], - const void *values, const GLubyte *mask) -{ - struct gl_renderbuffer *dsrb = s8rb->Wrapped; - const GLubyte *src = (const GLubyte *) values; - ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - if (dsrb->GetPointer(ctx, dsrb, 0, 0)) { - /* direct access */ - GLuint i; - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]); - *dst = (*dst & 0xffffff00) | src[i]; - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]); - *dst = (*dst & 0xffffff) | (src[i] << 24); - } - } - } - } - else { - /* get, modify, put */ - GLuint temp[MAX_WIDTH], i; - dsrb->GetValues(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (temp[i] & 0xffffff00) | src[i]; - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (temp[i] & 0xffffff) | (src[i] << 24); - } - } - } - dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask); - } -} - -static void -put_mono_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, - const GLint x[], const GLint y[], - const void *value, const GLubyte *mask) -{ - struct gl_renderbuffer *dsrb = s8rb->Wrapped; - GLuint temp[MAX_WIDTH], i; - const GLubyte val = *((GLubyte *) value); - /* get, modify, put */ - dsrb->GetValues(ctx, dsrb, count, x, y, temp); - if (dsrb->Format == MESA_FORMAT_Z24_S8) { - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (temp[i] & 0xffffff00) | val; - } - } - } - else { - assert(dsrb->Format == MESA_FORMAT_S8_Z24); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - temp[i] = (temp[i] & 0xffffff) | (val << 24); - } - } - } - dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask); -} - - -/** - * Wrap the given GL_DEPTH_STENCIL renderbuffer so that it acts like - * a stencil renderbuffer. - * \return new stencil renderbuffer - */ -struct gl_renderbuffer * -_mesa_new_s8_renderbuffer_wrapper(struct gl_context *ctx, struct gl_renderbuffer *dsrb) -{ - struct gl_renderbuffer *s8rb; - - ASSERT(dsrb->Format == MESA_FORMAT_Z24_S8 || - dsrb->Format == MESA_FORMAT_S8_Z24); - ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); - - s8rb = ctx->Driver.NewRenderbuffer(ctx, 0); - if (!s8rb) - return NULL; - - /* NOTE: need to do manual refcounting here */ - s8rb->Wrapped = dsrb; - dsrb->RefCount++; - - s8rb->Name = dsrb->Name; - s8rb->RefCount = 0; - s8rb->Width = dsrb->Width; - s8rb->Height = dsrb->Height; - s8rb->InternalFormat = GL_STENCIL_INDEX8_EXT; - s8rb->Format = MESA_FORMAT_S8; - s8rb->_BaseFormat = GL_STENCIL_INDEX; - s8rb->DataType = GL_UNSIGNED_BYTE; - s8rb->Data = NULL; - s8rb->Delete = delete_wrapper; - s8rb->AllocStorage = alloc_wrapper_storage; - s8rb->GetPointer = nop_get_pointer; - s8rb->GetRow = get_row_s8; - s8rb->GetValues = get_values_s8; - s8rb->PutRow = put_row_s8; - s8rb->PutRowRGB = NULL; - s8rb->PutMonoRow = put_mono_row_s8; - s8rb->PutValues = put_values_s8; - s8rb->PutMonoValues = put_mono_values_s8; - - return s8rb; -} - - - -/** - ** The following functions are useful for hardware drivers that only - ** implement combined depth/stencil buffers. - ** The GL_EXT_framebuffer_object extension allows indepedent depth and - ** stencil buffers to be used in any combination. - ** Therefore, we sometimes have to merge separate depth and stencil - ** renderbuffers into a single depth+stencil renderbuffer. And sometimes - ** we have to split combined depth+stencil renderbuffers into separate - ** renderbuffers. - **/ - - -/** - * Extract stencil values from the combined depth/stencil renderbuffer, storing - * the values into a separate stencil renderbuffer. - * \param dsRb the source depth/stencil renderbuffer - * \param stencilRb the destination stencil renderbuffer - * (either 8-bit or 32-bit) - */ -void -_mesa_extract_stencil(struct gl_context *ctx, - struct gl_renderbuffer *dsRb, - struct gl_renderbuffer *stencilRb) -{ - GLuint row, width, height; - - ASSERT(dsRb); - ASSERT(stencilRb); - - ASSERT(dsRb->Format == MESA_FORMAT_Z24_S8); - ASSERT(dsRb->DataType == GL_UNSIGNED_INT_24_8_EXT); - ASSERT(stencilRb->Format == MESA_FORMAT_Z24_S8 || - stencilRb->Format == MESA_FORMAT_S8); - ASSERT(dsRb->Width == stencilRb->Width); - ASSERT(dsRb->Height == stencilRb->Height); - - width = dsRb->Width; - height = dsRb->Height; - - for (row = 0; row < height; row++) { - GLuint depthStencil[MAX_WIDTH]; - dsRb->GetRow(ctx, dsRb, width, 0, row, depthStencil); - if (stencilRb->Format == MESA_FORMAT_S8) { - /* 8bpp stencil */ - GLubyte stencil[MAX_WIDTH]; - GLuint i; - for (i = 0; i < width; i++) { - stencil[i] = depthStencil[i] & 0xff; - } - stencilRb->PutRow(ctx, stencilRb, width, 0, row, stencil, NULL); - } - else { - /* 32bpp stencil */ - /* the 24 depth bits will be ignored */ - ASSERT(stencilRb->Format == MESA_FORMAT_Z24_S8); - ASSERT(stencilRb->DataType == GL_UNSIGNED_INT_24_8_EXT); - stencilRb->PutRow(ctx, stencilRb, width, 0, row, depthStencil, NULL); - } - } -} - - -/** - * Copy stencil values from a stencil renderbuffer into a combined - * depth/stencil renderbuffer. - * \param dsRb the destination depth/stencil renderbuffer - * \param stencilRb the source stencil buffer (either 8-bit or 32-bit) - */ -void -_mesa_insert_stencil(struct gl_context *ctx, - struct gl_renderbuffer *dsRb, - struct gl_renderbuffer *stencilRb) -{ - GLuint row, width, height; - - ASSERT(dsRb); - ASSERT(stencilRb); - - ASSERT(dsRb->Format == MESA_FORMAT_Z24_S8); - ASSERT(dsRb->DataType == GL_UNSIGNED_INT_24_8_EXT); - ASSERT(stencilRb->Format == MESA_FORMAT_Z24_S8 || - stencilRb->Format == MESA_FORMAT_S8); - - ASSERT(dsRb->Width == stencilRb->Width); - ASSERT(dsRb->Height == stencilRb->Height); - - width = dsRb->Width; - height = dsRb->Height; - - for (row = 0; row < height; row++) { - GLuint depthStencil[MAX_WIDTH]; - - dsRb->GetRow(ctx, dsRb, width, 0, row, depthStencil); - - if (stencilRb->Format == MESA_FORMAT_S8) { - /* 8bpp stencil */ - GLubyte stencil[MAX_WIDTH]; - GLuint i; - stencilRb->GetRow(ctx, stencilRb, width, 0, row, stencil); - for (i = 0; i < width; i++) { - depthStencil[i] = (depthStencil[i] & 0xffffff00) | stencil[i]; - } - } - else { - /* 32bpp stencil buffer */ - GLuint stencil[MAX_WIDTH], i; - ASSERT(stencilRb->Format == MESA_FORMAT_Z24_S8); - ASSERT(stencilRb->DataType == GL_UNSIGNED_INT_24_8_EXT); - stencilRb->GetRow(ctx, stencilRb, width, 0, row, stencil); - for (i = 0; i < width; i++) { - depthStencil[i] - = (depthStencil[i] & 0xffffff00) | (stencil[i] & 0xff); - } - } - - dsRb->PutRow(ctx, dsRb, width, 0, row, depthStencil, NULL); - } -} - - -/** - * Convert the stencil buffer from 8bpp to 32bpp depth/stencil. - * \param stencilRb the stencil renderbuffer to promote - */ -void -_mesa_promote_stencil(struct gl_context *ctx, struct gl_renderbuffer *stencilRb) -{ - const GLsizei width = stencilRb->Width; - const GLsizei height = stencilRb->Height; - GLubyte *data; - GLint i, j, k; - - ASSERT(stencilRb->Format == MESA_FORMAT_S8); - ASSERT(stencilRb->Data); - - data = (GLubyte *) stencilRb->Data; - stencilRb->Data = NULL; - stencilRb->AllocStorage(ctx, stencilRb, GL_DEPTH24_STENCIL8_EXT, - width, height); - - ASSERT(stencilRb->DataType == GL_UNSIGNED_INT_24_8_EXT); - - k = 0; - for (i = 0; i < height; i++) { - GLuint depthStencil[MAX_WIDTH]; - for (j = 0; j < width; j++) { - depthStencil[j] = data[k++]; - } - stencilRb->PutRow(ctx, stencilRb, width, 0, i, depthStencil, NULL); - } - free(data); -} +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2006 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 + * 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. + */ + +#include "glheader.h" +#include "imports.h" +#include "context.h" +#include "formats.h" +#include "mtypes.h" +#include "depthstencil.h" +#include "renderbuffer.h" + + +/** + * Adaptor/wrappers for GL_DEPTH_STENCIL renderbuffers. + * + * The problem with a GL_DEPTH_STENCIL renderbuffer is that sometimes we + * want to treat it as a stencil buffer, other times we want to treat it + * as a depth/z buffer and still other times when we want to treat it as + * a combined Z+stencil buffer! That implies we need three different sets + * of Get/Put functions. + * + * We solve this by wrapping the Z24_S8 or S8_Z24 renderbuffer with depth and + * stencil adaptors, each with the right kind of depth/stencil Get/Put functions. + */ + + +static void * +nop_get_pointer(struct gl_context *ctx, struct gl_renderbuffer *rb, GLint x, GLint y) +{ + (void) ctx; + (void) rb; + (void) x; + (void) y; + return NULL; +} + + +/** + * Delete a depth or stencil wrapper renderbuffer. + */ +static void +delete_wrapper(struct gl_renderbuffer *rb) +{ + ASSERT(rb->Format == MESA_FORMAT_S8 || + rb->Format == MESA_FORMAT_X8_Z24); + _mesa_reference_renderbuffer(&rb->Wrapped, NULL); + free(rb); +} + + +/** + * Realloc storage for wrapper. + */ +static GLboolean +alloc_wrapper_storage(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLenum internalFormat, GLuint width, GLuint height) +{ + /* just pass this on to the wrapped renderbuffer */ + struct gl_renderbuffer *dsrb = rb->Wrapped; + GLboolean retVal; + + (void) internalFormat; + + ASSERT(dsrb->Format == MESA_FORMAT_Z24_S8 || + dsrb->Format == MESA_FORMAT_Z24_X8 || + dsrb->Format == MESA_FORMAT_S8_Z24 || + dsrb->Format == MESA_FORMAT_X8_Z24); + + retVal = dsrb->AllocStorage(ctx, dsrb, dsrb->InternalFormat, width, height); + if (retVal) { + rb->Width = width; + rb->Height = height; + rb->RowStride = dsrb->RowStride; + } + return retVal; +} + + + + +/*====================================================================== + * Depth wrapper around depth/stencil renderbuffer + */ + +static void +get_row_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, + GLint x, GLint y, void *values) +{ + struct gl_renderbuffer *dsrb = z24rb->Wrapped; + GLuint temp[MAX_WIDTH], i; + GLuint *dst = (GLuint *) values; + const GLuint *src = (const GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); + ASSERT(z24rb->DataType == GL_UNSIGNED_INT); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (!src) { + dsrb->GetRow(ctx, dsrb, count, x, y, temp); + src = temp; + } + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + dst[i] = src[i] >> 8; + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + dst[i] = src[i] & 0xffffff; + } + } +} + +static void +get_values_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + struct gl_renderbuffer *dsrb = z24rb->Wrapped; + GLuint temp[MAX_WIDTH], i; + GLuint *dst = (GLuint *) values; + ASSERT(z24rb->DataType == GL_UNSIGNED_INT); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + ASSERT(count <= MAX_WIDTH); + /* don't bother trying direct access */ + dsrb->GetValues(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + dst[i] = temp[i] >> 8; + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + dst[i] = temp[i] & 0xffffff; + } + } +} + +static void +put_row_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + struct gl_renderbuffer *dsrb = z24rb->Wrapped; + const GLuint *src = (const GLuint *) values; + GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); + ASSERT(z24rb->DataType == GL_UNSIGNED_INT); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (dst) { + /* direct access */ + GLuint i; + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i] = (src[i] << 8) | (dst[i] & 0xff); + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i] = (src[i] & 0xffffff) | (dst[i] & 0xff000000); + } + } + } + } + else { + /* get, modify, put */ + GLuint temp[MAX_WIDTH], i; + dsrb->GetRow(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (src[i] << 8) | (temp[i] & 0xff); + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (src[i] & 0xffffff) | (temp[i] & 0xff000000); + } + } + } + dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask); + } +} + +static void +put_mono_row_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + struct gl_renderbuffer *dsrb = z24rb->Wrapped; + GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); + ASSERT(z24rb->DataType == GL_UNSIGNED_INT); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (dst) { + /* direct access */ + GLuint i; + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + const GLuint shiftedVal = *((GLuint *) value) << 8; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i] = shiftedVal | (dst[i] & 0xff); + } + } + } + else { + const GLuint shiftedVal = *((GLuint *) value); + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i] = shiftedVal | (dst[i] & 0xff000000); + } + } + } + } + else { + /* get, modify, put */ + GLuint temp[MAX_WIDTH], i; + dsrb->GetRow(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + const GLuint shiftedVal = *((GLuint *) value) << 8; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = shiftedVal | (temp[i] & 0xff); + } + } + } + else { + const GLuint shiftedVal = *((GLuint *) value); + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = shiftedVal | (temp[i] & 0xff000000); + } + } + } + dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask); + } +} + +static void +put_values_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, GLuint count, + const GLint x[], const GLint y[], + const void *values, const GLubyte *mask) +{ + struct gl_renderbuffer *dsrb = z24rb->Wrapped; + const GLuint *src = (const GLuint *) values; + ASSERT(z24rb->DataType == GL_UNSIGNED_INT); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (dsrb->GetPointer(ctx, dsrb, 0, 0)) { + /* direct access */ + GLuint i; + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]); + *dst = (src[i] << 8) | (*dst & 0xff); + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]); + *dst = (src[i] & 0xffffff) | (*dst & 0xff000000); + } + } + } + } + else { + /* get, modify, put */ + GLuint temp[MAX_WIDTH], i; + dsrb->GetValues(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (src[i] << 8) | (temp[i] & 0xff); + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (src[i] & 0xffffff) | (temp[i] & 0xff000000); + } + } + } + dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask); + } +} + +static void +put_mono_values_z24(struct gl_context *ctx, struct gl_renderbuffer *z24rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + struct gl_renderbuffer *dsrb = z24rb->Wrapped; + GLuint temp[MAX_WIDTH], i; + /* get, modify, put */ + dsrb->GetValues(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + const GLuint shiftedVal = *((GLuint *) value) << 8; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = shiftedVal | (temp[i] & 0xff); + } + } + } + else { + const GLuint shiftedVal = *((GLuint *) value); + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = shiftedVal | (temp[i] & 0xff000000); + } + } + } + dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask); +} + + +/** + * Wrap the given GL_DEPTH_STENCIL renderbuffer so that it acts like + * a depth renderbuffer. + * \return new depth renderbuffer + */ +struct gl_renderbuffer * +_mesa_new_z24_renderbuffer_wrapper(struct gl_context *ctx, + struct gl_renderbuffer *dsrb) +{ + struct gl_renderbuffer *z24rb; + + ASSERT(dsrb->Format == MESA_FORMAT_Z24_S8 || + dsrb->Format == MESA_FORMAT_Z24_X8 || + dsrb->Format == MESA_FORMAT_S8_Z24 || + dsrb->Format == MESA_FORMAT_X8_Z24); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + + z24rb = ctx->Driver.NewRenderbuffer(ctx, 0); + if (!z24rb) + return NULL; + + /* NOTE: need to do manual refcounting here */ + z24rb->Wrapped = dsrb; + dsrb->RefCount++; + + z24rb->Name = dsrb->Name; + z24rb->RefCount = 0; + z24rb->Width = dsrb->Width; + z24rb->Height = dsrb->Height; + z24rb->RowStride = dsrb->RowStride; + z24rb->InternalFormat = GL_DEPTH_COMPONENT24; + z24rb->Format = MESA_FORMAT_X8_Z24; + z24rb->_BaseFormat = GL_DEPTH_COMPONENT; + z24rb->DataType = GL_UNSIGNED_INT; + z24rb->Data = NULL; + z24rb->Delete = delete_wrapper; + z24rb->AllocStorage = alloc_wrapper_storage; + z24rb->GetPointer = nop_get_pointer; + z24rb->GetRow = get_row_z24; + z24rb->GetValues = get_values_z24; + z24rb->PutRow = put_row_z24; + z24rb->PutRowRGB = NULL; + z24rb->PutMonoRow = put_mono_row_z24; + z24rb->PutValues = put_values_z24; + z24rb->PutMonoValues = put_mono_values_z24; + + return z24rb; +} + + +/*====================================================================== + * Stencil wrapper around depth/stencil renderbuffer + */ + +static void +get_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, + GLint x, GLint y, void *values) +{ + struct gl_renderbuffer *dsrb = s8rb->Wrapped; + GLuint temp[MAX_WIDTH], i; + GLubyte *dst = (GLubyte *) values; + const GLuint *src = (const GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); + ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (!src) { + dsrb->GetRow(ctx, dsrb, count, x, y, temp); + src = temp; + } + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + dst[i] = src[i] & 0xff; + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + dst[i] = src[i] >> 24; + } + } +} + +static void +get_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + struct gl_renderbuffer *dsrb = s8rb->Wrapped; + GLuint temp[MAX_WIDTH], i; + GLubyte *dst = (GLubyte *) values; + ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + ASSERT(count <= MAX_WIDTH); + /* don't bother trying direct access */ + dsrb->GetValues(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + dst[i] = temp[i] & 0xff; + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + dst[i] = temp[i] >> 24; + } + } +} + +static void +put_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + struct gl_renderbuffer *dsrb = s8rb->Wrapped; + const GLubyte *src = (const GLubyte *) values; + GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); + ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (dst) { + /* direct access */ + GLuint i; + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i] = (dst[i] & 0xffffff00) | src[i]; + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i] = (dst[i] & 0xffffff) | (src[i] << 24); + } + } + } + } + else { + /* get, modify, put */ + GLuint temp[MAX_WIDTH], i; + dsrb->GetRow(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (temp[i] & 0xffffff00) | src[i]; + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (temp[i] & 0xffffff) | (src[i] << 24); + } + } + } + dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask); + } +} + +static void +put_mono_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + struct gl_renderbuffer *dsrb = s8rb->Wrapped; + const GLubyte val = *((GLubyte *) value); + GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y); + ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (dst) { + /* direct access */ + GLuint i; + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i] = (dst[i] & 0xffffff00) | val; + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i] = (dst[i] & 0xffffff) | (val << 24); + } + } + } + } + else { + /* get, modify, put */ + GLuint temp[MAX_WIDTH], i; + dsrb->GetRow(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (temp[i] & 0xffffff00) | val; + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (temp[i] & 0xffffff) | (val << 24); + } + } + } + dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask); + } +} + +static void +put_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, + const GLint x[], const GLint y[], + const void *values, const GLubyte *mask) +{ + struct gl_renderbuffer *dsrb = s8rb->Wrapped; + const GLubyte *src = (const GLubyte *) values; + ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (dsrb->GetPointer(ctx, dsrb, 0, 0)) { + /* direct access */ + GLuint i; + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]); + *dst = (*dst & 0xffffff00) | src[i]; + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]); + *dst = (*dst & 0xffffff) | (src[i] << 24); + } + } + } + } + else { + /* get, modify, put */ + GLuint temp[MAX_WIDTH], i; + dsrb->GetValues(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (temp[i] & 0xffffff00) | src[i]; + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (temp[i] & 0xffffff) | (src[i] << 24); + } + } + } + dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask); + } +} + +static void +put_mono_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count, + const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + struct gl_renderbuffer *dsrb = s8rb->Wrapped; + GLuint temp[MAX_WIDTH], i; + const GLubyte val = *((GLubyte *) value); + /* get, modify, put */ + dsrb->GetValues(ctx, dsrb, count, x, y, temp); + if (dsrb->Format == MESA_FORMAT_Z24_S8) { + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (temp[i] & 0xffffff00) | val; + } + } + } + else { + assert(dsrb->Format == MESA_FORMAT_S8_Z24); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + temp[i] = (temp[i] & 0xffffff) | (val << 24); + } + } + } + dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask); +} + + +/** + * Wrap the given GL_DEPTH_STENCIL renderbuffer so that it acts like + * a stencil renderbuffer. + * \return new stencil renderbuffer + */ +struct gl_renderbuffer * +_mesa_new_s8_renderbuffer_wrapper(struct gl_context *ctx, struct gl_renderbuffer *dsrb) +{ + struct gl_renderbuffer *s8rb; + + ASSERT(dsrb->Format == MESA_FORMAT_Z24_S8 || + dsrb->Format == MESA_FORMAT_S8_Z24); + ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT); + + s8rb = ctx->Driver.NewRenderbuffer(ctx, 0); + if (!s8rb) + return NULL; + + /* NOTE: need to do manual refcounting here */ + s8rb->Wrapped = dsrb; + dsrb->RefCount++; + + s8rb->Name = dsrb->Name; + s8rb->RefCount = 0; + s8rb->Width = dsrb->Width; + s8rb->Height = dsrb->Height; + s8rb->RowStride = dsrb->RowStride; + s8rb->InternalFormat = GL_STENCIL_INDEX8_EXT; + s8rb->Format = MESA_FORMAT_S8; + s8rb->_BaseFormat = GL_STENCIL_INDEX; + s8rb->DataType = GL_UNSIGNED_BYTE; + s8rb->Data = NULL; + s8rb->Delete = delete_wrapper; + s8rb->AllocStorage = alloc_wrapper_storage; + s8rb->GetPointer = nop_get_pointer; + s8rb->GetRow = get_row_s8; + s8rb->GetValues = get_values_s8; + s8rb->PutRow = put_row_s8; + s8rb->PutRowRGB = NULL; + s8rb->PutMonoRow = put_mono_row_s8; + s8rb->PutValues = put_values_s8; + s8rb->PutMonoValues = put_mono_values_s8; + + return s8rb; +} + + + +/** + ** The following functions are useful for hardware drivers that only + ** implement combined depth/stencil buffers. + ** The GL_EXT_framebuffer_object extension allows indepedent depth and + ** stencil buffers to be used in any combination. + ** Therefore, we sometimes have to merge separate depth and stencil + ** renderbuffers into a single depth+stencil renderbuffer. And sometimes + ** we have to split combined depth+stencil renderbuffers into separate + ** renderbuffers. + **/ + + +/** + * Extract stencil values from the combined depth/stencil renderbuffer, storing + * the values into a separate stencil renderbuffer. + * \param dsRb the source depth/stencil renderbuffer + * \param stencilRb the destination stencil renderbuffer + * (either 8-bit or 32-bit) + */ +void +_mesa_extract_stencil(struct gl_context *ctx, + struct gl_renderbuffer *dsRb, + struct gl_renderbuffer *stencilRb) +{ + GLuint row, width, height; + + ASSERT(dsRb); + ASSERT(stencilRb); + + ASSERT(dsRb->Format == MESA_FORMAT_Z24_S8); + ASSERT(dsRb->DataType == GL_UNSIGNED_INT_24_8_EXT); + ASSERT(stencilRb->Format == MESA_FORMAT_Z24_S8 || + stencilRb->Format == MESA_FORMAT_S8); + ASSERT(dsRb->Width == stencilRb->Width); + ASSERT(dsRb->Height == stencilRb->Height); + + width = dsRb->Width; + height = dsRb->Height; + + for (row = 0; row < height; row++) { + GLuint depthStencil[MAX_WIDTH]; + dsRb->GetRow(ctx, dsRb, width, 0, row, depthStencil); + if (stencilRb->Format == MESA_FORMAT_S8) { + /* 8bpp stencil */ + GLubyte stencil[MAX_WIDTH]; + GLuint i; + for (i = 0; i < width; i++) { + stencil[i] = depthStencil[i] & 0xff; + } + stencilRb->PutRow(ctx, stencilRb, width, 0, row, stencil, NULL); + } + else { + /* 32bpp stencil */ + /* the 24 depth bits will be ignored */ + ASSERT(stencilRb->Format == MESA_FORMAT_Z24_S8); + ASSERT(stencilRb->DataType == GL_UNSIGNED_INT_24_8_EXT); + stencilRb->PutRow(ctx, stencilRb, width, 0, row, depthStencil, NULL); + } + } +} + + +/** + * Copy stencil values from a stencil renderbuffer into a combined + * depth/stencil renderbuffer. + * \param dsRb the destination depth/stencil renderbuffer + * \param stencilRb the source stencil buffer (either 8-bit or 32-bit) + */ +void +_mesa_insert_stencil(struct gl_context *ctx, + struct gl_renderbuffer *dsRb, + struct gl_renderbuffer *stencilRb) +{ + GLuint row, width, height; + + ASSERT(dsRb); + ASSERT(stencilRb); + + ASSERT(dsRb->Format == MESA_FORMAT_Z24_S8); + ASSERT(dsRb->DataType == GL_UNSIGNED_INT_24_8_EXT); + ASSERT(stencilRb->Format == MESA_FORMAT_Z24_S8 || + stencilRb->Format == MESA_FORMAT_S8); + + ASSERT(dsRb->Width == stencilRb->Width); + ASSERT(dsRb->Height == stencilRb->Height); + + width = dsRb->Width; + height = dsRb->Height; + + for (row = 0; row < height; row++) { + GLuint depthStencil[MAX_WIDTH]; + + dsRb->GetRow(ctx, dsRb, width, 0, row, depthStencil); + + if (stencilRb->Format == MESA_FORMAT_S8) { + /* 8bpp stencil */ + GLubyte stencil[MAX_WIDTH]; + GLuint i; + stencilRb->GetRow(ctx, stencilRb, width, 0, row, stencil); + for (i = 0; i < width; i++) { + depthStencil[i] = (depthStencil[i] & 0xffffff00) | stencil[i]; + } + } + else { + /* 32bpp stencil buffer */ + GLuint stencil[MAX_WIDTH], i; + ASSERT(stencilRb->Format == MESA_FORMAT_Z24_S8); + ASSERT(stencilRb->DataType == GL_UNSIGNED_INT_24_8_EXT); + stencilRb->GetRow(ctx, stencilRb, width, 0, row, stencil); + for (i = 0; i < width; i++) { + depthStencil[i] + = (depthStencil[i] & 0xffffff00) | (stencil[i] & 0xff); + } + } + + dsRb->PutRow(ctx, dsRb, width, 0, row, depthStencil, NULL); + } +} + + +/** + * Convert the stencil buffer from 8bpp to 32bpp depth/stencil. + * \param stencilRb the stencil renderbuffer to promote + */ +void +_mesa_promote_stencil(struct gl_context *ctx, struct gl_renderbuffer *stencilRb) +{ + const GLsizei width = stencilRb->Width; + const GLsizei height = stencilRb->Height; + GLubyte *data; + GLint i, j, k; + + ASSERT(stencilRb->Format == MESA_FORMAT_S8); + ASSERT(stencilRb->Data); + + data = (GLubyte *) stencilRb->Data; + stencilRb->Data = NULL; + stencilRb->AllocStorage(ctx, stencilRb, GL_DEPTH24_STENCIL8_EXT, + width, height); + + ASSERT(stencilRb->DataType == GL_UNSIGNED_INT_24_8_EXT); + + k = 0; + for (i = 0; i < height; i++) { + GLuint depthStencil[MAX_WIDTH]; + for (j = 0; j < width; j++) { + depthStencil[j] = data[k++]; + } + stencilRb->PutRow(ctx, stencilRb, width, 0, i, depthStencil, NULL); + } + free(data); +} -- cgit v1.2.3