diff options
Diffstat (limited to 'mesalib/src/mesa/swrast/s_depthstencil.c')
| -rw-r--r-- | mesalib/src/mesa/swrast/s_depthstencil.c | 1037 |
1 files changed, 1037 insertions, 0 deletions
diff --git a/mesalib/src/mesa/swrast/s_depthstencil.c b/mesalib/src/mesa/swrast/s_depthstencil.c new file mode 100644 index 000000000..dc768e216 --- /dev/null +++ b/mesalib/src/mesa/swrast/s_depthstencil.c @@ -0,0 +1,1037 @@ +/* + * 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); + fb->_DepthBuffer->Width = depthRb->Width; + fb->_DepthBuffer->Height = depthRb->Height; + } + 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); + fb->_StencilBuffer->Width = stencilRb->Width; + fb->_StencilBuffer->Height = stencilRb->Height; + } + else { + /* stencilRb may be null */ + _mesa_reference_renderbuffer(&fb->_StencilBuffer, stencilRb); + } +} |