-/* $Id: s_texstore.c,v 1.8 2002/09/27 02:45:39 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 6.5.2
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * 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"),
+#include "glheader.h"
+#include "imports.h"
#include "colormac.h"
#include "context.h"
#include "convolve.h"
#include "image.h"
#include "macros.h"
-#include "mem.h"
+#include "mipmap.h"
#include "texformat.h"
#include "teximage.h"
#include "texstore.h"
#include "s_depth.h"
#include "s_span.h"
-/*
+
+/**
* Read an RGBA image from the frame buffer.
* This is used by glCopyTex[Sub]Image[12]D().
- * Input: ctx - the context
- * x, y - lower left corner
- * width, height - size of region to read
- * Return: pointer to block of GL_RGBA, GLchan data.
+ * \param x window source x
+ * \param y window source y
+ * \param width image width
+ * \param height image height
+ * \param type datatype for returned GL_RGBA image
+ * \return pointer to image
*/
-static GLchan *
-read_color_image( GLcontext *ctx, GLint x, GLint y,
+static GLvoid *
+read_color_image( GLcontext *ctx, GLint x, GLint y, GLenum type,
GLsizei width, GLsizei height )
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLint stride, i;
- GLchan *image, *dst;
+ struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
+ const GLint pixelSize = _mesa_bytes_per_pixel(GL_RGBA, type);
+ const GLint stride = width * pixelSize;
+ GLint row;
+ GLubyte *image, *dst;
- image = (GLchan *) MALLOC(width * height * 4 * sizeof(GLchan));
+ image = (GLubyte *) _mesa_malloc(width * height * pixelSize);
if (!image)
return NULL;
- /* Select buffer to read from */
- _swrast_use_read_buffer(ctx);
-
- RENDER_START(swrast,ctx);
+ RENDER_START(swrast, ctx);
dst = image;
- stride = width * 4;
- for (i = 0; i < height; i++) {
- _mesa_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y + i,
- (GLchan (*)[4]) dst );
+ for (row = 0; row < height; row++) {
+ _swrast_read_rgba_span(ctx, rb, width, x, y + row, type, dst);
dst += stride;
}
- RENDER_FINISH(swrast,ctx);
-
- /* Read from draw buffer (the default) */
- _swrast_use_draw_buffer(ctx);
+ RENDER_FINISH(swrast, ctx);
return image;
}
-/*
- * As above, but read data from depth buffer.
+/**
+ * As above, but read data from depth buffer. Returned as GLuints.
+ * \sa read_color_image
*/
-static GLfloat *
+static GLuint *
read_depth_image( GLcontext *ctx, GLint x, GLint y,
GLsizei width, GLsizei height )
{
+ struct gl_renderbuffer *rb = ctx->ReadBuffer->_DepthBuffer;
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLfloat *image, *dst;
+ GLuint *image, *dst;
GLint i;
- image = (GLfloat *) MALLOC(width * height * sizeof(GLfloat));
+ image = (GLuint *) _mesa_malloc(width * height * sizeof(GLuint));
if (!image)
return NULL;
- RENDER_START(swrast,ctx);
+ RENDER_START(swrast, ctx);
dst = image;
for (i = 0; i < height; i++) {
- _mesa_read_depth_span_float(ctx, width, x, y + i, dst);
+ _swrast_read_depth_span_uint(ctx, rb, width, x, y + i, dst);
dst += width;
}
- RENDER_FINISH(swrast,ctx);
+ RENDER_FINISH(swrast, ctx);
return image;
}
+/**
+ * As above, but read data from depth+stencil buffers.
+ */
+static GLuint *
+read_depth_stencil_image(GLcontext *ctx, GLint x, GLint y,
+ GLsizei width, GLsizei height)
+{
+ struct gl_renderbuffer *depthRb = ctx->ReadBuffer->_DepthBuffer;
+ struct gl_renderbuffer *stencilRb = ctx->ReadBuffer->_StencilBuffer;
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ GLuint *image, *dst;
+ GLint i;
+
+ ASSERT(depthRb);
+ ASSERT(stencilRb);
+
+ image = (GLuint *) _mesa_malloc(width * height * sizeof(GLuint));
+ if (!image)
+ return NULL;
+
+ RENDER_START(swrast, ctx);
+
+ /* read from depth buffer */
+ dst = image;
+ if (depthRb->DataType == GL_UNSIGNED_INT) {
+ for (i = 0; i < height; i++) {
+ _swrast_get_row(ctx, depthRb, width, x, y + i, dst, sizeof(GLuint));
+ dst += width;
+ }
+ }
+ else {
+ GLushort z16[MAX_WIDTH];
+ ASSERT(depthRb->DataType == GL_UNSIGNED_SHORT);
+ for (i = 0; i < height; i++) {
+ GLint j;
+ _swrast_get_row(ctx, depthRb, width, x, y + i, z16, sizeof(GLushort));
+ /* convert GLushorts to GLuints */
+ for (j = 0; j < width; j++) {
+ dst[j] = z16[j];
+ }
+ dst += width;
+ }
+ }
+
+ /* put depth values into bits 0xffffff00 */
+ if (ctx->ReadBuffer->Visual.depthBits == 24) {
+ GLint j;
+ for (j = 0; j < width * height; j++) {
+ image[j] <<= 8;
+ }
+ }
+ else if (ctx->ReadBuffer->Visual.depthBits == 16) {
+ GLint j;
+ for (j = 0; j < width * height; j++) {
+ image[j] = (image[j] << 16) | (image[j] & 0xff00);
+ }
+ }
+ else {
+ /* this handles arbitrary depthBits >= 12 */
+ const GLint rShift = ctx->ReadBuffer->Visual.depthBits;
+ const GLint lShift = 32 - rShift;
+ GLint j;
+ for (j = 0; j < width * height; j++) {
+ GLuint z = (image[j] << lShift);
+ image[j] = z | (z >> rShift);
+ }
+ }
+
+ /* read stencil values and interleave into image array */
+ dst = image;
+ for (i = 0; i < height; i++) {
+ GLstencil stencil[MAX_WIDTH];
+ GLint j;
+ ASSERT(8 * sizeof(GLstencil) == stencilRb->StencilBits);
+ _swrast_get_row(ctx, stencilRb, width, x, y + i,
+ stencil, sizeof(GLstencil));
+ for (j = 0; j < width; j++) {
+ dst[j] = (dst[j] & 0xffffff00) | (stencil[j] & 0xff);
+ }
+ dst += width;
+ }
+
+ RENDER_FINISH(swrast, ctx);
+
+ return image;
+}
+
static GLboolean
is_depth_format(GLenum format)
}
+static GLboolean
+is_depth_stencil_format(GLenum format)
+{
+ switch (format) {
+ case GL_DEPTH_STENCIL_EXT:
+ case GL_DEPTH24_STENCIL8_EXT:
+ return GL_TRUE;
+ default:
+ return GL_FALSE;
+ }
+}
+
+
/*
* Fallback for Driver.CopyTexImage1D().
*/
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
ASSERT(texObj);
- texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
+ texImage = _mesa_select_tex_image(ctx, texObj, target, level);
ASSERT(texImage);
ASSERT(ctx->Driver.TexImage1D);
if (is_depth_format(internalFormat)) {
/* read depth image from framebuffer */
- GLfloat *image = read_depth_image(ctx, x, y, width, 1);
+ GLuint *image = read_depth_image(ctx, x, y, width, 1);
+ if (!image) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D");
+ return;
+ }
+ /* call glTexImage1D to redefine the texture */
+ ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
+ width, border,
+ GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
+ }
+ else if (is_depth_stencil_format(internalFormat)) {
+ /* read depth/stencil image from framebuffer */
+ GLuint *image = read_depth_stencil_image(ctx, x, y, width, 1);
if (!image) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D");
return;
}
-
/* call glTexImage1D to redefine the texture */
- (*ctx->Driver.TexImage1D)(ctx, target, level, internalFormat,
- width, border,
- GL_DEPTH_COMPONENT, GL_FLOAT, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
+ width, border,
+ GL_DEPTH_STENCIL_EXT, GL_UNSIGNED_INT_24_8_EXT,
+ image, &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
else {
/* read RGBA image from framebuffer */
- GLchan *image = read_color_image(ctx, x, y, width, 1);
+ const GLenum format = GL_RGBA;
+ const GLenum type = ctx->ReadBuffer->_ColorReadBuffer->DataType;
+ GLvoid *image = read_color_image(ctx, x, y, type, width, 1);
if (!image) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D");
return;
}
-
/* call glTexImage1D to redefine the texture */
- (*ctx->Driver.TexImage1D)(ctx, target, level, internalFormat,
- width, border,
- GL_RGBA, CHAN_TYPE, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
+ width, border, format, type, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
/* GL_SGIS_generate_mipmap */
}
-/*
+/**
* Fallback for Driver.CopyTexImage2D().
+ *
+ * We implement CopyTexImage by reading the image from the framebuffer
+ * then passing it to the ctx->Driver.TexImage2D() function.
+ *
+ * Device drivers should try to implement direct framebuffer->texture copies.
*/
void
_swrast_copy_teximage2d( GLcontext *ctx, GLenum target, GLint level,
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
ASSERT(texObj);
- texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
+ texImage = _mesa_select_tex_image(ctx, texObj, target, level);
ASSERT(texImage);
ASSERT(ctx->Driver.TexImage2D);
if (is_depth_format(internalFormat)) {
/* read depth image from framebuffer */
- GLfloat *image = read_depth_image(ctx, x, y, width, height);
+ GLuint *image = read_depth_image(ctx, x, y, width, height);
+ if (!image) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D");
+ return;
+ }
+ /* call glTexImage2D to redefine the texture */
+ ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
+ width, height, border,
+ GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
+ }
+ else if (is_depth_stencil_format(internalFormat)) {
+ GLuint *image = read_depth_stencil_image(ctx, x, y, width, height);
if (!image) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D");
return;
}
-
/* call glTexImage2D to redefine the texture */
- (*ctx->Driver.TexImage2D)(ctx, target, level, internalFormat,
- width, height, border,
- GL_DEPTH_COMPONENT, GL_FLOAT, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
+ width, height, border,
+ GL_DEPTH_STENCIL_EXT, GL_UNSIGNED_INT_24_8_EXT,
+ image, &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
else {
/* read RGBA image from framebuffer */
- GLchan *image = read_color_image(ctx, x, y, width, height);
+ const GLenum format = GL_RGBA;
+ const GLenum type = ctx->ReadBuffer->_ColorReadBuffer->DataType;
+ GLvoid *image = read_color_image(ctx, x, y, type, width, height);
if (!image) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D");
return;
}
-
/* call glTexImage2D to redefine the texture */
- (*ctx->Driver.TexImage2D)(ctx, target, level, internalFormat,
- width, height, border,
- GL_RGBA, CHAN_TYPE, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
+ width, height, border, format, type, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
/* GL_SGIS_generate_mipmap */
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
ASSERT(texObj);
- texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
+ texImage = _mesa_select_tex_image(ctx, texObj, target, level);
ASSERT(texImage);
ASSERT(ctx->Driver.TexImage1D);
- if (texImage->Format == GL_DEPTH_COMPONENT) {
+ if (texImage->_BaseFormat == GL_DEPTH_COMPONENT) {
/* read depth image from framebuffer */
- GLfloat *image = read_depth_image(ctx, x, y, width, 1);
+ GLuint *image = read_depth_image(ctx, x, y, width, 1);
if (!image) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage1D");
return;
}
/* call glTexSubImage1D to redefine the texture */
- (*ctx->Driver.TexSubImage1D)(ctx, target, level, xoffset, width,
- GL_DEPTH_COMPONENT, GL_FLOAT, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ ctx->Driver.TexSubImage1D(ctx, target, level, xoffset, width,
+ GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
+ }
+ else if (texImage->_BaseFormat == GL_DEPTH_STENCIL_EXT) {
+ /* read depth/stencil image from framebuffer */
+ GLuint *image = read_depth_stencil_image(ctx, x, y, width, 1);
+ if (!image) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage1D");
+ return;
+ }
+ /* call glTexImage1D to redefine the texture */
+ ctx->Driver.TexSubImage1D(ctx, target, level, xoffset, width,
+ GL_DEPTH_STENCIL_EXT, GL_UNSIGNED_INT_24_8_EXT,
+ image, &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
else {
/* read RGBA image from framebuffer */
- GLchan *image = read_color_image(ctx, x, y, width, 1);
+ const GLenum format = GL_RGBA;
+ const GLenum type = ctx->ReadBuffer->_ColorReadBuffer->DataType;
+ GLvoid *image = read_color_image(ctx, x, y, type, width, 1);
if (!image) {
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage1D" );
return;
}
-
/* now call glTexSubImage1D to do the real work */
- (*ctx->Driver.TexSubImage1D)(ctx, target, level, xoffset, width,
- GL_RGBA, CHAN_TYPE, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ ctx->Driver.TexSubImage1D(ctx, target, level, xoffset, width,
+ format, type, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
/* GL_SGIS_generate_mipmap */
}
-/*
+/**
* Fallback for Driver.CopyTexSubImage2D().
+ *
+ * Read the image from the framebuffer then hand it
+ * off to ctx->Driver.TexSubImage2D().
*/
void
_swrast_copy_texsubimage2d( GLcontext *ctx,
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
ASSERT(texObj);
- texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
+ texImage = _mesa_select_tex_image(ctx, texObj, target, level);
ASSERT(texImage);
ASSERT(ctx->Driver.TexImage2D);
- if (texImage->Format == GL_DEPTH_COMPONENT) {
+ if (texImage->_BaseFormat == GL_DEPTH_COMPONENT) {
/* read depth image from framebuffer */
- GLfloat *image = read_depth_image(ctx, x, y, width, height);
+ GLuint *image = read_depth_image(ctx, x, y, width, height);
if (!image) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage2D");
return;
}
-
- /* call glTexImage1D to redefine the texture */
- (*ctx->Driver.TexSubImage2D)(ctx, target, level,
- xoffset, yoffset, width, height,
- GL_DEPTH_COMPONENT, GL_FLOAT, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ /* call glTexImage2D to redefine the texture */
+ ctx->Driver.TexSubImage2D(ctx, target, level,
+ xoffset, yoffset, width, height,
+ GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
+ }
+ else if (texImage->_BaseFormat == GL_DEPTH_STENCIL_EXT) {
+ /* read depth/stencil image from framebuffer */
+ GLuint *image = read_depth_stencil_image(ctx, x, y, width, height);
+ if (!image) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage2D");
+ return;
+ }
+ /* call glTexImage2D to redefine the texture */
+ ctx->Driver.TexSubImage2D(ctx, target, level,
+ xoffset, yoffset, width, height,
+ GL_DEPTH_STENCIL_EXT, GL_UNSIGNED_INT_24_8_EXT,
+ image, &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
else {
/* read RGBA image from framebuffer */
- GLchan *image = read_color_image(ctx, x, y, width, height);
+ const GLenum format = GL_RGBA;
+ const GLenum type = ctx->ReadBuffer->_ColorReadBuffer->DataType;
+ GLvoid *image = read_color_image(ctx, x, y, type, width, height);
if (!image) {
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage2D" );
return;
}
-
/* now call glTexSubImage2D to do the real work */
- (*ctx->Driver.TexSubImage2D)(ctx, target, level,
- xoffset, yoffset, width, height,
- GL_RGBA, CHAN_TYPE, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ ctx->Driver.TexSubImage2D(ctx, target, level,
+ xoffset, yoffset, width, height,
+ format, type, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
/* GL_SGIS_generate_mipmap */
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
ASSERT(texObj);
- texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
+ texImage = _mesa_select_tex_image(ctx, texObj, target, level);
ASSERT(texImage);
ASSERT(ctx->Driver.TexImage3D);
- if (texImage->Format == GL_DEPTH_COMPONENT) {
+ if (texImage->_BaseFormat == GL_DEPTH_COMPONENT) {
/* read depth image from framebuffer */
- GLfloat *image = read_depth_image(ctx, x, y, width, height);
+ GLuint *image = read_depth_image(ctx, x, y, width, height);
if (!image) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage3D");
return;
}
-
- /* call glTexImage1D to redefine the texture */
- (*ctx->Driver.TexSubImage3D)(ctx, target, level,
- xoffset, yoffset, zoffset, width, height, 1,
- GL_DEPTH_COMPONENT, GL_FLOAT, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ /* call glTexImage3D to redefine the texture */
+ ctx->Driver.TexSubImage3D(ctx, target, level,
+ xoffset, yoffset, zoffset, width, height, 1,
+ GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
+ }
+ else if (texImage->_BaseFormat == GL_DEPTH_STENCIL_EXT) {
+ /* read depth/stencil image from framebuffer */
+ GLuint *image = read_depth_stencil_image(ctx, x, y, width, height);
+ if (!image) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage3D");
+ return;
+ }
+ /* call glTexImage3D to redefine the texture */
+ ctx->Driver.TexSubImage3D(ctx, target, level,
+ xoffset, yoffset, zoffset, width, height, 1,
+ GL_DEPTH_STENCIL_EXT, GL_UNSIGNED_INT_24_8_EXT,
+ image, &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
else {
/* read RGBA image from framebuffer */
- GLchan *image = read_color_image(ctx, x, y, width, height);
+ const GLenum format = GL_RGBA;
+ const GLenum type = ctx->ReadBuffer->_ColorReadBuffer->DataType;
+ GLvoid *image = read_color_image(ctx, x, y, type, width, height);
if (!image) {
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage3D" );
return;
}
-
/* now call glTexSubImage3D to do the real work */
- (*ctx->Driver.TexSubImage3D)(ctx, target, level,
- xoffset, yoffset, zoffset, width, height, 1,
- GL_RGBA, CHAN_TYPE, image,
- &_mesa_native_packing, texObj, texImage);
- FREE(image);
+ ctx->Driver.TexSubImage3D(ctx, target, level,
+ xoffset, yoffset, zoffset, width, height, 1,
+ format, type, image,
+ &ctx->DefaultPacking, texObj, texImage);
+ _mesa_free(image);
}
/* GL_SGIS_generate_mipmap */
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