diff options
Diffstat (limited to 'mesalib/src/mesa/main/depthstencil.c')
| -rw-r--r-- | mesalib/src/mesa/main/depthstencil.c | 1667 |
1 files changed, 835 insertions, 832 deletions
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); +} |