--- /dev/null
+/*
+ * 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 "main/glheader.h"
+#include "main/imports.h"
+#include "main/context.h"
+#include "main/formats.h"
+#include "main/mtypes.h"
+#include "main/renderbuffer.h"
+#include "swrast/s_depthstencil.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 ||
+ rb->Format == MESA_FORMAT_Z32_FLOAT);
+ _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
+ */
+static struct gl_renderbuffer *
+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;
+}
+
+
+static void
+get_row_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+ GLint x, GLint y, void *values)
+{
+ struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+ GLfloat temp[MAX_WIDTH*2];
+ GLfloat *dst = (GLfloat *) values;
+ const GLfloat *src = (const GLfloat *) dsrb->GetPointer(ctx, dsrb, x, y);
+ GLuint i;
+ ASSERT(z32frb->DataType == GL_FLOAT);
+ ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+ if (!src) {
+ dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+ src = temp;
+ }
+ for (i = 0; i < count; i++) {
+ dst[i] = src[i*2];
+ }
+}
+
+static void
+get_values_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+ const GLint x[], const GLint y[], void *values)
+{
+ struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+ GLfloat temp[MAX_WIDTH*2];
+ GLfloat *dst = (GLfloat *) values;
+ GLuint i;
+ ASSERT(z32frb->DataType == GL_FLOAT);
+ ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+ ASSERT(count <= MAX_WIDTH);
+ /* don't bother trying direct access */
+ dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+ for (i = 0; i < count; i++) {
+ dst[i] = temp[i*2];
+ }
+}
+
+static void
+put_row_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+ GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+ struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+ const GLfloat *src = (const GLfloat *) values;
+ GLfloat *dst = (GLfloat *) dsrb->GetPointer(ctx, dsrb, x, y);
+ ASSERT(z32frb->DataType == GL_FLOAT);
+ ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+ if (dst) {
+ /* direct access */
+ GLuint i;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ dst[i*2] = src[i];
+ }
+ }
+ }
+ else {
+ /* get, modify, put */
+ GLfloat temp[MAX_WIDTH*2];
+ GLuint i;
+ dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ temp[i*2] = src[i];
+ }
+ }
+ dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask);
+ }
+}
+
+static void
+put_mono_row_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+ GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+ struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+ GLfloat *dst = (GLfloat *) dsrb->GetPointer(ctx, dsrb, x, y);
+ ASSERT(z32frb->DataType == GL_FLOAT);
+ ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+ if (dst) {
+ /* direct access */
+ GLuint i;
+ const GLfloat val = *(GLfloat*)value;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ dst[i*2] = val;
+ }
+ }
+ }
+ else {
+ /* get, modify, put */
+ GLfloat temp[MAX_WIDTH*2];
+ GLuint i;
+ const GLfloat val = *(GLfloat *)value;
+ dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ temp[i*2] = val;
+ }
+ }
+ dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask);
+ }
+}
+
+static void
+put_values_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+ const GLint x[], const GLint y[],
+ const void *values, const GLubyte *mask)
+{
+ struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+ const GLfloat *src = (const GLfloat *) values;
+ ASSERT(z32frb->DataType == GL_FLOAT);
+ ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+ if (dsrb->GetPointer(ctx, dsrb, 0, 0)) {
+ /* direct access */
+ GLuint i;
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ GLfloat *dst = (GLfloat *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]);
+ *dst = src[i];
+ }
+ }
+ }
+ else {
+ /* get, modify, put */
+ GLfloat temp[MAX_WIDTH*2];
+ GLuint i;
+ dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ temp[i*2] = src[i];
+ }
+ }
+ dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask);
+ }
+}
+
+static void
+put_mono_values_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb,
+ GLuint count, const GLint x[], const GLint y[],
+ const void *value, const GLubyte *mask)
+{
+ struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+ GLfloat temp[MAX_WIDTH*2];
+ GLuint i;
+ const GLfloat val = *(GLfloat *)value;
+ ASSERT(z32frb->DataType == GL_FLOAT);
+ ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+ /* get, modify, put */
+ dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ temp[i*2] = val;
+ }
+ }
+ 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
+ */
+static struct gl_renderbuffer *
+new_z32f_renderbuffer_wrapper(struct gl_context *ctx,
+ struct gl_renderbuffer *dsrb)
+{
+ struct gl_renderbuffer *z32frb;
+
+ ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+ ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+
+ z32frb = ctx->Driver.NewRenderbuffer(ctx, 0);
+ if (!z32frb)
+ return NULL;
+
+ /* NOTE: need to do manual refcounting here */
+ z32frb->Wrapped = dsrb;
+ dsrb->RefCount++;
+
+ z32frb->Name = dsrb->Name;
+ z32frb->RefCount = 0;
+ z32frb->Width = dsrb->Width;
+ z32frb->Height = dsrb->Height;
+ z32frb->RowStride = dsrb->RowStride;
+ z32frb->InternalFormat = GL_DEPTH_COMPONENT32F;
+ z32frb->Format = MESA_FORMAT_Z32_FLOAT;
+ z32frb->_BaseFormat = GL_DEPTH_COMPONENT;
+ z32frb->DataType = GL_FLOAT;
+ z32frb->Data = NULL;
+ z32frb->Delete = delete_wrapper;
+ z32frb->AllocStorage = alloc_wrapper_storage;
+ z32frb->GetPointer = nop_get_pointer;
+ z32frb->GetRow = get_row_z32f;
+ z32frb->GetValues = get_values_z32f;
+ z32frb->PutRow = put_row_z32f;
+ z32frb->PutRowRGB = NULL;
+ z32frb->PutMonoRow = put_mono_row_z32f;
+ z32frb->PutValues = put_values_z32f;
+ z32frb->PutMonoValues = put_mono_values_z32f;
+
+ return z32frb;
+}
+
+
+/*======================================================================
+ * 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*2], 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 ||
+ dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ if (!src) {
+ dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+ src = temp;
+ }
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ dst[i] = src[i*2+1] & 0xff;
+ }
+ }
+ else 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*2], i;
+ GLubyte *dst = (GLubyte *) values;
+ ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE);
+ ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT ||
+ dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ ASSERT(count <= MAX_WIDTH);
+ /* don't bother trying direct access */
+ dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ dst[i] = temp[i*2+1] & 0xff;
+ }
+ }
+ else 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 ||
+ dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ if (dst) {
+ /* direct access */
+ GLuint i;
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ dst[i*2+1] = src[i];
+ }
+ }
+ }
+ else 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*2], i;
+ dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ temp[i*2+1] = src[i];
+ }
+ }
+ }
+ else 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 ||
+ dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ if (dst) {
+ /* direct access */
+ GLuint i;
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ dst[i*2+1] = val;
+ }
+ }
+ }
+ else 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*2], i;
+ dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ temp[i*2+1] = val;
+ }
+ }
+ }
+ else 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 ||
+ dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+ if (dsrb->GetPointer(ctx, dsrb, 0, 0)) {
+ /* direct access */
+ GLuint i;
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]);
+ dst[1] = src[i];
+ }
+ }
+ }
+ else 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*2], i;
+ dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ temp[i*2+1] = src[i];
+ }
+ }
+ }
+ else 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*2], i;
+ const GLubyte val = *((GLubyte *) value);
+ /* get, modify, put */
+ dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+ if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ for (i = 0; i < count; i++) {
+ if (!mask || mask[i]) {
+ temp[i*2+1] = val;
+ }
+ }
+ }
+ else 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
+ */
+static struct gl_renderbuffer *
+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 ||
+ dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+ ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT ||
+ dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+
+ 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;
+}
+
+
+/**
+ * Update the framebuffer's _DepthBuffer field using the renderbuffer
+ * found at the given attachment index.
+ *
+ * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
+ * create and install a depth wrapper/adaptor.
+ *
+ * \param fb the framebuffer whose _DepthBuffer field to update
+ */
+void
+_swrast_update_depth_buffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ struct gl_renderbuffer *depthRb =
+ fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+
+ if (depthRb && _mesa_is_format_packed_depth_stencil(depthRb->Format)) {
+ /* The attached depth buffer is a GL_DEPTH_STENCIL renderbuffer */
+ if (!fb->_DepthBuffer
+ || fb->_DepthBuffer->Wrapped != depthRb
+ || _mesa_get_format_base_format(fb->_DepthBuffer->Format) != GL_DEPTH_COMPONENT) {
+ /* need to update wrapper */
+ struct gl_renderbuffer *wrapper;
+
+ if (depthRb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+ wrapper = new_z32f_renderbuffer_wrapper(ctx, depthRb);
+ }
+ else {
+ wrapper = new_z24_renderbuffer_wrapper(ctx, depthRb);
+ }
+ _mesa_reference_renderbuffer(&fb->_DepthBuffer, wrapper);
+ ASSERT(fb->_DepthBuffer->Wrapped == depthRb);
+ }
+ }
+ else {
+ /* depthRb may be null */
+ _mesa_reference_renderbuffer(&fb->_DepthBuffer, depthRb);
+ }
+}
+
+
+/**
+ * Update the framebuffer's _StencilBuffer field using the renderbuffer
+ * found at the given attachment index.
+ *
+ * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
+ * create and install a stencil wrapper/adaptor.
+ *
+ * \param fb the framebuffer whose _StencilBuffer field to update
+ */
+void
+_swrast_update_stencil_buffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ struct gl_renderbuffer *stencilRb =
+ fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+
+ if (stencilRb && _mesa_is_format_packed_depth_stencil(stencilRb->Format)) {
+ /* The attached stencil buffer is a GL_DEPTH_STENCIL renderbuffer */
+ if (!fb->_StencilBuffer
+ || fb->_StencilBuffer->Wrapped != stencilRb
+ || _mesa_get_format_base_format(fb->_StencilBuffer->Format) != GL_STENCIL_INDEX) {
+ /* need to update wrapper */
+ struct gl_renderbuffer *wrapper
+ = new_s8_renderbuffer_wrapper(ctx, stencilRb);
+ _mesa_reference_renderbuffer(&fb->_StencilBuffer, wrapper);
+ ASSERT(fb->_StencilBuffer->Wrapped == stencilRb);
+ }
+ }
+ else {
+ /* stencilRb may be null */
+ _mesa_reference_renderbuffer(&fb->_StencilBuffer, stencilRb);
+ }
+}
projects / mesa.git / commitdiff