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added device driver functions for CopyTexImage, CopyTexSubImage, GetTexImage

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This commit is contained in:
Brian Paul
2000-03-20 14:37:52 +00:00
parent 8a90cabf81
commit f7b5707d66
2 changed files with 262 additions and 58 deletions
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46
src/mesa/main/dd.h
View File

@@ -1,4 +1,4 @@
/* $Id: dd.h,v 1.17 2000/03/07 18:24:49 brianp Exp $ */
/* $Id: dd.h,v 1.18 2000/03/20 14:37:52 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -593,6 +593,50 @@ struct dd_function_table {
* Called from glTexSubImage() to define a sub-region of a texture.
*/
GLboolean (*CopyTexImage1D)( GLcontext *ctx, GLenum target, GLint level,
GLenum internalFormat, GLint x, GLint y,
GLsizei width, GLint border );
GLboolean (*CopyTexImage2D)( GLcontext *ctx, GLenum target, GLint level,
GLenum internalFormat, GLint x, GLint y,
GLsizei width, GLsizei height, GLint border );
/* Called by glCopyTexImage1D and glCopyTexImage2D.
* Will not be called if any glPixelTransfer operations are enabled.
* Return GL_TRUE if operation completed, return GL_FALSE if core Mesa
* should do the job.
*/
GLboolean (*CopyTexSubImage1D)( GLcontext *ctx, GLenum target, GLint level,
GLint xoffset,
GLint x, GLint y, GLsizei width );
GLboolean (*CopyTexSubImage2D)( GLcontext *ctx, GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLint x, GLint y,
GLsizei width, GLsizei height );
GLboolean (*CopyTexSubImage3D)( GLcontext *ctx, GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y,
GLsizei width, GLsizei height );
/* Called by glCopyTexSubImage1/2/3D.
* Will not be called if any glPixelTransfer operations are enabled.
* Return GL_TRUE if operation completed, return GL_FALSE if core Mesa
* should do the job.
*/
GLvoid *(*GetTexImage)( GLcontext *ctx, GLenum target, GLint level,
GLenum *formatOut, GLenum *typeOut,
GLboolean *freeImageOut );
/* Called by glGetTexImage or by core Mesa when a texture image
* is needed for software fallback rendering.
* Return the address of the texture image or NULL if failure.
* The image must be tightly packed (i.e. row stride = image width)
* Return the image's format and type in formatOut and typeOut.
* The format and type must be values which are accepted by glTexImage.
* Set the freeImageOut flag if the returned image should be deallocated
* with FREE() when finished.
* The size of the image can be deduced from the target and level.
* Core Mesa will perform any image format/type conversions that are needed.
*/
void (*TexParameter)( GLcontext *ctx, GLenum target,
struct gl_texture_object *tObj,
GLenum pname, const GLfloat *params );

274
src/mesa/main/teximage.c
View File

@@ -1,4 +1,4 @@
/* $Id: teximage.c,v 1.19 2000/03/19 01:10:12 brianp Exp $ */
/* $Id: teximage.c,v 1.20 2000/03/20 14:37:54 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -50,6 +50,21 @@
*/
/*
* Default pixel packing of Mesa's internal texture images:
*/
static struct gl_pixelstore_attrib DefaultPacking = {
1, /* Alignment */
0, /* RowLength */
0, /* SkipPixels */
0, /* SkipRows */
0, /* ImageHeight */
0, /* SkipImages */
GL_FALSE, /* SwapBytes */
GL_FALSE /* LsbFirst */
};
/*
* Compute log base 2 of n.
@@ -1034,17 +1049,19 @@ _mesa_TexImage1D( GLenum target, GLint level, GLint internalformat,
GLenum type, const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage1D");
if (target==GL_TEXTURE_1D) {
struct gl_texture_unit *texUnit;
struct gl_texture_image *teximage;
if (texture_error_check( ctx, target, level, internalformat,
format, type, 1, width, 1, 1, border )) {
/* error in texture image was detected */
return;
return; /* error in texture image was detected */
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
/* free current texture image, if any */
if (texUnit->CurrentD[1]->Image[level]) {
gl_free_texture_image( texUnit->CurrentD[1]->Image[level] );
@@ -1105,17 +1122,19 @@ _mesa_TexImage2D( GLenum target, GLint level, GLint internalformat,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage2D");
if (target==GL_TEXTURE_2D) {
struct gl_texture_unit *texUnit;
struct gl_texture_image *teximage;
if (texture_error_check( ctx, target, level, internalformat,
format, type, 2, width, height, 1, border )) {
/* error in texture image was detected */
return;
return; /* error in texture image was detected */
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
/* free current texture image, if any */
if (texUnit->CurrentD[2]->Image[level]) {
gl_free_texture_image( texUnit->CurrentD[2]->Image[level] );
@@ -1181,18 +1200,19 @@ _mesa_TexImage3D( GLenum target, GLint level, GLint internalformat,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage3DEXT");
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage3D");
if (target==GL_TEXTURE_3D_EXT) {
struct gl_texture_unit *texUnit;
struct gl_texture_image *teximage;
if (texture_error_check( ctx, target, level, internalformat,
format, type, 3, width, height, depth,
border )) {
/* error in texture image was detected */
return;
return; /* error in texture image was detected */
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
/* free current texture image, if any */
if (texUnit->CurrentD[3]->Image[level]) {
gl_free_texture_image( texUnit->CurrentD[3]->Image[level] );
@@ -1258,6 +1278,96 @@ _mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalformat,
}
/*
* Fetch a texture image from the device driver.
* Store the results in the given texture object at the given mipmap level.
*/
static void
get_teximage_from_driver( GLcontext *ctx, GLenum target, GLint level,
const struct gl_texture_object *texObj )
{
GLvoid *image;
GLenum imgFormat, imgType;
GLboolean freeImage;
struct gl_texture_image *texImage;
GLint destComponents, numPixels, srcBytesPerTexel;
if (!ctx->Driver.GetTexImage)
return;
image = (*ctx->Driver.GetTexImage)( ctx, target, level,
&imgFormat, &imgType, &freeImage);
if (!image)
return;
texImage = texObj->Image[level];
ASSERT(texImage);
if (!texImage)
return;
destComponents = components_in_intformat(texImage->Format);
assert(destComponents > 0);
numPixels = texImage->Width * texImage->Height * texImage->Depth;
assert(numPixels > 0);
srcBytesPerTexel = gl_bytes_per_pixel(imgFormat, imgType);
assert(srcBytesPerTexel > 0);
if (!texImage->Data) {
/* Allocate memory for the texture image data */
texImage->Data = (GLubyte *) MALLOC(numPixels * destComponents + EXTRA_BYTE);
}
if (imgFormat == texImage->Format && imgType == GL_UNSIGNED_BYTE) {
/* We got lucky! The driver's format and type match Mesa's format. */
if (texImage->Data) {
MEMCPY(texImage->Data, image, numPixels * destComponents);
}
}
else {
/* Convert the texture image from the driver's format to Mesa's
* internal format.
*/
const GLint width = texImage->Width;
const GLint height = texImage->Height;
const GLint depth = texImage->Depth;
const GLint destBytesPerRow = width * destComponents * sizeof(GLchan);
const GLint srcBytesPerRow = width * srcBytesPerTexel;
const GLenum dstType = GL_UNSIGNED_BYTE;
const GLenum dstFormat = texImage->Format;
const GLubyte *srcPtr = (const GLubyte *) image;
GLubyte *destPtr = texImage->Data;
if (texImage->Format == GL_COLOR_INDEX) {
/* color index texture */
GLint img, row;
assert(imgFormat == GL_COLOR_INDEX);
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
_mesa_unpack_index_span(ctx, width, dstType, destPtr,
imgType, srcPtr, &DefaultPacking, GL_FALSE);
destPtr += destBytesPerRow;
srcPtr += srcBytesPerRow;
}
}
}
else {
/* color texture */
GLint img, row;
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
_mesa_unpack_ubyte_color_span(ctx, width, dstFormat, destPtr,
imgFormat, imgType, srcPtr, &DefaultPacking, GL_FALSE);
destPtr += destBytesPerRow;
srcPtr += srcBytesPerRow;
}
}
}
}
if (freeImage)
FREE(image);
}
void
_mesa_GetTexImage( GLenum target, GLint level, GLenum format,
@@ -1265,6 +1375,8 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
{
GET_CURRENT_CONTEXT(ctx);
const struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GLboolean discardImage;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetTexImage");
@@ -1284,7 +1396,7 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
}
if (!pixels)
return; /* XXX generate an error??? */
return;
switch (target) {
case GL_TEXTURE_1D:
@@ -1301,8 +1413,22 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
return;
}
if (texObj->Image[level] && texObj->Image[level]->Data) {
const struct gl_texture_image *texImage = texObj->Image[level];
texImage = texObj->Image[level];
if (!texImage) {
/* invalid mipmap level */
return;
}
if (!texImage->Data) {
/* try to get the texture image from the device driver */
get_teximage_from_driver(ctx, target, level, texObj);
discardImage = GL_TRUE;
}
else {
discardImage = GL_FALSE;
}
if (texImage->Data) {
GLint width = texImage->Width;
GLint height = texImage->Height;
GLint row;
@@ -1385,6 +1511,12 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
format, type, dest, &ctx->Pack, GL_TRUE );
}
}
/* if we got the teximage from the device driver we'll discard it now */
if (discardImage) {
FREE(texImage->Data);
texImage->Data = NULL;
}
}
}
@@ -1402,8 +1534,7 @@ _mesa_TexSubImage1D( GLenum target, GLint level,
if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0,
width, 1, 1, format, type)) {
/* error was detected */
return;
return; /* error was detected */
}
destTex = texUnit->CurrentD[1]->Image[level];
@@ -1472,8 +1603,7 @@ _mesa_TexSubImage2D( GLenum target, GLint level,
if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0,
width, height, 1, format, type)) {
/* error was detected */
return;
return; /* error was detected */
}
destTex = texUnit->CurrentD[2]->Image[level];
@@ -1555,8 +1685,7 @@ _mesa_TexSubImage3D( GLenum target, GLint level,
if (subtexture_error_check(ctx, 3, target, level, xoffset, yoffset, zoffset,
width, height, depth, format, type)) {
/* error was detected */
return;
return; /* error was detected */
}
destTex = texUnit->CurrentD[3]->Image[level];
@@ -1668,15 +1797,22 @@ _mesa_CopyTexImage1D( GLenum target, GLint level,
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexImage1D");
if (!copytexture_error_check(ctx, 1, target, level, internalFormat,
width, 1, border)) {
if (copytexture_error_check(ctx, 1, target, level, internalFormat,
width, 1, border))
return;
if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA
|| !ctx->Driver.CopyTexImage1D
|| !(*ctx->Driver.CopyTexImage1D)(ctx, target, level,
internalFormat, x, y, width, border))
{
GLubyte *image = read_color_image( ctx, x, y, width, 1 );
if (!image) {
gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D" );
return;
}
(*ctx->Exec->TexImage1D)( target, level, internalFormat, width,
border, GL_RGBA, GL_UNSIGNED_BYTE, image );
border, GL_RGBA, GL_UNSIGNED_BYTE, image );
FREE(image);
}
}
@@ -1691,15 +1827,22 @@ _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexImage2D");
if (!copytexture_error_check(ctx, 2, target, level, internalFormat,
width, height, border)) {
if (copytexture_error_check(ctx, 2, target, level, internalFormat,
width, height, border))
return;
if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA
|| !ctx->Driver.CopyTexImage2D
|| !(*ctx->Driver.CopyTexImage2D)(ctx, target, level,
internalFormat, x, y, width, height, border))
{
GLubyte *image = read_color_image( ctx, x, y, width, height );
if (!image) {
gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D" );
return;
}
(ctx->Exec->TexImage2D)( target, level, internalFormat, width,
height, border, GL_RGBA, GL_UNSIGNED_BYTE, image );
height, border, GL_RGBA, GL_UNSIGNED_BYTE, image );
FREE(image);
}
}
@@ -1770,8 +1913,14 @@ _mesa_CopyTexSubImage1D( GLenum target, GLint level,
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage1D");
if (!copytexsubimage_error_check(ctx, 1, target, level,
xoffset, 0, 0, width, 1)) {
if (copytexsubimage_error_check(ctx, 1, target, level,
xoffset, 0, 0, width, 1))
return;
if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA
|| !ctx->Driver.CopyTexSubImage1D
|| !(*ctx->Driver.CopyTexSubImage1D)(ctx, target, level,
xoffset, x, y, width)) {
struct gl_texture_unit *texUnit;
struct gl_texture_image *teximage;
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
@@ -1779,12 +1928,12 @@ _mesa_CopyTexSubImage1D( GLenum target, GLint level,
assert(teximage);
if (teximage->Data) {
copy_tex_sub_image(ctx, teximage, width, 1, x, y, xoffset, 0, 0);
/* tell driver about the change */
if (ctx->Driver.TexImage) {
(*ctx->Driver.TexImage)( ctx, GL_TEXTURE_1D,
texUnit->CurrentD[1],
level, teximage->IntFormat, teximage );
}
/* tell driver about the change */
if (ctx->Driver.TexImage) {
(*ctx->Driver.TexImage)( ctx, GL_TEXTURE_1D,
texUnit->CurrentD[1],
level, teximage->IntFormat, teximage );
}
}
}
}
@@ -1799,8 +1948,14 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level,
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage2D");
if (!copytexsubimage_error_check(ctx, 2, target, level,
xoffset, yoffset, 0, width, height)) {
if (copytexsubimage_error_check(ctx, 2, target, level,
xoffset, yoffset, 0, width, height))
return;
if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA
|| !ctx->Driver.CopyTexSubImage2D
|| !(*ctx->Driver.CopyTexSubImage2D)(ctx, target, level,
xoffset, yoffset, x, y, width, height )) {
struct gl_texture_unit *texUnit;
struct gl_texture_image *teximage;
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
@@ -1809,11 +1964,11 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level,
if (teximage->Data) {
copy_tex_sub_image(ctx, teximage, width, height,
x, y, xoffset, yoffset, 0);
/* tell driver about the change */
if (ctx->Driver.TexImage) {
(*ctx->Driver.TexImage)( ctx, GL_TEXTURE_2D,
texUnit->CurrentD[2],
level, teximage->IntFormat, teximage );
/* tell driver about the change */
if (ctx->Driver.TexImage) {
(*ctx->Driver.TexImage)( ctx, GL_TEXTURE_2D,
texUnit->CurrentD[2],
level, teximage->IntFormat, teximage );
}
}
}
@@ -1829,23 +1984,28 @@ _mesa_CopyTexSubImage3D( GLenum target, GLint level,
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage3D");
if (!copytexsubimage_error_check(ctx, 3, target, level,
xoffset, yoffset, zoffset, width, height)) {
struct gl_texture_unit *texUnit;
struct gl_texture_image *teximage;
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
teximage = texUnit->CurrentD[3]->Image[level];
assert(teximage);
if (teximage->Data) {
copy_tex_sub_image(ctx, teximage, width, height,
if (copytexsubimage_error_check(ctx, 3, target, level,
xoffset, yoffset, zoffset, width, height))
return;
if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA
|| !ctx->Driver.CopyTexSubImage3D
|| !(*ctx->Driver.CopyTexSubImage3D)(ctx, target, level,
xoffset, yoffset, zoffset, x, y, width, height )) {
struct gl_texture_unit *texUnit;
struct gl_texture_image *teximage;
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
teximage = texUnit->CurrentD[3]->Image[level];
assert(teximage);
if (teximage->Data) {
copy_tex_sub_image(ctx, teximage, width, height,
x, y, xoffset, yoffset, zoffset);
/* tell driver about the change */
if (ctx->Driver.TexImage) {
(*ctx->Driver.TexImage)( ctx, GL_TEXTURE_3D,
texUnit->CurrentD[3],
level, teximage->IntFormat, teximage );
}
/* tell driver about the change */
if (ctx->Driver.TexImage) {
(*ctx->Driver.TexImage)( ctx, GL_TEXTURE_3D,
texUnit->CurrentD[3],
level, teximage->IntFormat, teximage );
}
}
}
}