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more work on GL_ARB_texture_compression

tags/mesa_3_3
Brian Paul 26 år sedan
förälder
c470d86633
incheckning
9540a1dbcf
3 ändrade filer med 514 tillägg och 14 borttagningar
Delad Vy Visa Diff Statistik
  1. 41
    0
      src/mesa/main/dd.h
  2. 272
    5
      src/mesa/main/dlist.c
  3. 201
    9
      src/mesa/main/teximage.c

+ 41
- 0
src/mesa/main/dd.h Visa fil

@@ -667,6 +667,47 @@ struct dd_function_table {
* should do the job.
*/

GLboolean (*CompressedTexSubImage1D)( GLcontext *ctx, GLenum target,
GLint level, GLint xoffset,
GLsizei width, GLenum format,
GLsizei imageSize, const GLvoid *data,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage );
GLboolean (*CompressedTexSubImage2D)( GLcontext *ctx, GLenum target,
GLint level, GLint xoffset,
GLint yoffset, GLsizei width,
GLint height, GLenum format,
GLsizei imageSize, const GLvoid *data,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage );
GLboolean (*CompressedTexSubImage3D)( GLcontext *ctx, GLenum target,
GLint level, GLint xoffset,
GLint yoffset, GLint zoffset,
GLsizei width, GLint height,
GLint depth, GLenum format,
GLsizei imageSize, const GLvoid *data,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage );
/* Called by glCompressedTexSubImage1/2/3D.
* Arguments:
* <target>, <level>, <x/z/zoffset>, <width>, <height>, <depth>,
* <imageSize>, and <data> are user specified.
* <texObj> is the target texture object.
* <texImage> is the target texture image. It will have the texture
* width, height, depth, border and internalFormat information.
* Return GL_TRUE if operation completed, return GL_FALSE if core Mesa
* should do the job.
*/

void (*GetCompressedTexImage)( GLcontext *ctx, GLenum target,
GLint lod, void *image,
const struct gl_texture_object *texObj,
struct gl_texture_image *texImage );
/* Called by glGetCompressedTexImageARB.
* <target>, <lod>, <image> are specified by user.
* <texObj> is the source texture object.
* <texImage> is the source texture image.
*/

void (*TexEnv)( GLcontext *ctx, GLenum target, GLenum pname,
const GLfloat *param );

+ 272
- 5
src/mesa/main/dlist.c Visa fil

@@ -1,4 +1,4 @@
/* $Id: dlist.c,v 1.41 2000/05/24 15:04:45 brianp Exp $ */
/* $Id: dlist.c,v 1.42 2000/06/06 17:03:38 brianp Exp $ */

/*
* Mesa 3-D graphics library
@@ -245,6 +245,13 @@ typedef enum {
/* GL_SGIX/SGIS_pixel_texture */
OPCODE_PIXEL_TEXGEN_SGIX,
OPCODE_PIXEL_TEXGEN_PARAMETER_SGIS,
/* GL_ARB_texture_compression */
OPCODE_COMPRESSED_TEX_IMAGE_1D,
OPCODE_COMPRESSED_TEX_IMAGE_2D,
OPCODE_COMPRESSED_TEX_IMAGE_3D,
OPCODE_COMPRESSED_TEX_SUB_IMAGE_1D,
OPCODE_COMPRESSED_TEX_SUB_IMAGE_2D,
OPCODE_COMPRESSED_TEX_SUB_IMAGE_3D,
/* The following three are meta instructions */
OPCODE_ERROR, /* raise compiled-in error */
OPCODE_VERTEX_CASSETTE, /* render prebuilt vertex buffer */
@@ -420,6 +427,30 @@ void gl_destroy_list( GLcontext *ctx, GLuint list )
FREE(n[11].data);
n += InstSize[n[0].opcode];
break;
case OPCODE_COMPRESSED_TEX_IMAGE_1D:
FREE(n[7].data);
n += InstSize[n[0].opcode];
break;
case OPCODE_COMPRESSED_TEX_IMAGE_2D:
FREE(n[8].data);
n += InstSize[n[0].opcode];
break;
case OPCODE_COMPRESSED_TEX_IMAGE_3D:
FREE(n[9].data);
n += InstSize[n[0].opcode];
break;
case OPCODE_COMPRESSED_TEX_SUB_IMAGE_1D:
FREE(n[7].data);
n += InstSize[n[0].opcode];
break;
case OPCODE_COMPRESSED_TEX_SUB_IMAGE_2D:
FREE(n[9].data);
n += InstSize[n[0].opcode];
break;
case OPCODE_COMPRESSED_TEX_SUB_IMAGE_3D:
FREE(n[11].data);
n += InstSize[n[0].opcode];
break;
case OPCODE_CONTINUE:
n = (Node *) n[1].next;
FREE( block );
@@ -628,7 +659,14 @@ void gl_init_lists( void )
InstSize[OPCODE_END_OF_LIST] = 1;
/* GL_SGIX/SGIS_pixel_texture */
InstSize[OPCODE_PIXEL_TEXGEN_SGIX] = 2;
InstSize[OPCODE_PIXEL_TEXGEN_PARAMETER_SGIS] = 3,
InstSize[OPCODE_PIXEL_TEXGEN_PARAMETER_SGIS] = 3;
/* GL_ARB_texture_compression */
InstSize[OPCODE_COMPRESSED_TEX_IMAGE_1D] = 8;
InstSize[OPCODE_COMPRESSED_TEX_IMAGE_2D] = 9;
InstSize[OPCODE_COMPRESSED_TEX_IMAGE_3D] = 10;
InstSize[OPCODE_COMPRESSED_TEX_SUB_IMAGE_1D] = 8;
InstSize[OPCODE_COMPRESSED_TEX_SUB_IMAGE_2D] = 10;
InstSize[OPCODE_COMPRESSED_TEX_SUB_IMAGE_3D] = 12;
/* GL_ARB_multitexture */
InstSize[OPCODE_ACTIVE_TEXTURE] = 2;
InstSize[OPCODE_CLIENT_ACTIVE_TEXTURE] = 2;
@@ -3611,28 +3649,136 @@ static void save_PixelTexGenSGIX(GLenum mode)
/* GL_ARB_texture_compression */
static void
save_CompressedTexImage1DARB(GLenum target, GLint level,
GLenum internalformat, GLsizei width,
GLenum internalFormat, GLsizei width,
GLint border, GLsizei imageSize,
const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
if (target == GL_PROXY_TEXTURE_1D) {
/* don't compile, execute immediately */
(*ctx->Exec->CompressedTexImage1DARB)(target, level, internalFormat,
width, border, imageSize, data);
}
else {
Node *n;
GLvoid *image;
FLUSH_VB(ctx, "dlist");
/* make copy of image */
image = MALLOC(imageSize);
if (!image) {
gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage1DARB");
return;
}
MEMCPY(image, data, imageSize);
n = alloc_instruction( ctx, OPCODE_COMPRESSED_TEX_IMAGE_1D, 8 );
if (n) {
n[1].e = target;
n[2].i = level;
n[3].e = internalFormat;
n[4].i = (GLint) width;
n[5].i = border;
n[6].i = imageSize;
n[7].data = image;
}
else if (image) {
FREE(image);
}
if (ctx->ExecuteFlag) {
(*ctx->Exec->CompressedTexImage1DARB)(target, level, internalFormat,
width, border, imageSize, data);
}
}
}


static void
save_CompressedTexImage2DARB(GLenum target, GLint level,
GLenum internalformat, GLsizei width,
GLenum internalFormat, GLsizei width,
GLsizei height, GLint border, GLsizei imageSize,
const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
if (target == GL_PROXY_TEXTURE_2D) {
/* don't compile, execute immediately */
(*ctx->Exec->CompressedTexImage2DARB)(target, level, internalFormat,
width, height, border, imageSize, data);
}
else {
Node *n;
GLvoid *image;
FLUSH_VB(ctx, "dlist");
/* make copy of image */
image = MALLOC(imageSize);
if (!image) {
gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2DARB");
return;
}
MEMCPY(image, data, imageSize);
n = alloc_instruction( ctx, OPCODE_COMPRESSED_TEX_IMAGE_2D, 9 );
if (n) {
n[1].e = target;
n[2].i = level;
n[3].e = internalFormat;
n[4].i = (GLint) width;
n[5].i = (GLint) height;
n[6].i = border;
n[7].i = imageSize;
n[8].data = image;
}
else if (image) {
FREE(image);
}
if (ctx->ExecuteFlag) {
(*ctx->Exec->CompressedTexImage2DARB)(target, level, internalFormat,
width, height, border, imageSize, data);
}
}
}


static void
save_CompressedTexImage3DARB(GLenum target, GLint level,
GLenum internalformat, GLsizei width,
GLenum internalFormat, GLsizei width,
GLsizei height, GLsizei depth, GLint border,
GLsizei imageSize, const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
if (target == GL_PROXY_TEXTURE_3D) {
/* don't compile, execute immediately */
(*ctx->Exec->CompressedTexImage3DARB)(target, level, internalFormat,
width, height, depth, border, imageSize, data);
}
else {
Node *n;
GLvoid *image;
FLUSH_VB(ctx, "dlist");
/* make copy of image */
image = MALLOC(imageSize);
if (!image) {
gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage3DARB");
return;
}
MEMCPY(image, data, imageSize);
n = alloc_instruction( ctx, OPCODE_COMPRESSED_TEX_IMAGE_3D, 10 );
if (n) {
n[1].e = target;
n[2].i = level;
n[3].e = internalFormat;
n[4].i = (GLint) width;
n[5].i = (GLint) height;
n[6].i = (GLint) depth;
n[7].i = border;
n[8].i = imageSize;
n[9].data = image;
}
else if (image) {
FREE(image);
}
if (ctx->ExecuteFlag) {
(*ctx->Exec->CompressedTexImage3DARB)(target, level, internalFormat,
width, height, depth, border, imageSize, data);
}
}
}


@@ -3641,6 +3787,36 @@ save_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
GLsizei width, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
Node *n;
GLvoid *image;

GET_CURRENT_CONTEXT(ctx);
FLUSH_VB(ctx, "dlist");

/* make copy of image */
image = MALLOC(imageSize);
if (!image) {
gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexSubImage1DARB");
return;
}
MEMCPY(image, data, imageSize);
n = alloc_instruction( ctx, OPCODE_COMPRESSED_TEX_SUB_IMAGE_1D, 8 );
if (n) {
n[1].e = target;
n[2].i = level;
n[3].i = xoffset;
n[4].i = (GLint) width;
n[5].e = format;
n[6].i = imageSize;
n[7].data = image;
}
else if (image) {
FREE(image);
}
if (ctx->ExecuteFlag) {
(*ctx->Exec->CompressedTexSubImage1DARB)(target, level, xoffset,
width, format, imageSize, data);
}
}


@@ -3650,6 +3826,38 @@ save_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
GLenum format, GLsizei imageSize,
const GLvoid *data)
{
Node *n;
GLvoid *image;

GET_CURRENT_CONTEXT(ctx);
FLUSH_VB(ctx, "dlist");

/* make copy of image */
image = MALLOC(imageSize);
if (!image) {
gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexSubImage2DARB");
return;
}
MEMCPY(image, data, imageSize);
n = alloc_instruction( ctx, OPCODE_COMPRESSED_TEX_SUB_IMAGE_2D, 10 );
if (n) {
n[1].e = target;
n[2].i = level;
n[3].i = xoffset;
n[4].i = yoffset;
n[5].i = (GLint) width;
n[6].i = (GLint) height;
n[7].e = format;
n[8].i = imageSize;
n[9].data = image;
}
else if (image) {
FREE(image);
}
if (ctx->ExecuteFlag) {
(*ctx->Exec->CompressedTexSubImage2DARB)(target, level, xoffset, yoffset,
width, height, format, imageSize, data);
}
}


@@ -3659,6 +3867,40 @@ save_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
GLsizei height, GLsizei depth, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
Node *n;
GLvoid *image;

GET_CURRENT_CONTEXT(ctx);
FLUSH_VB(ctx, "dlist");

/* make copy of image */
image = MALLOC(imageSize);
if (!image) {
gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexSubImage3DARB");
return;
}
MEMCPY(image, data, imageSize);
n = alloc_instruction( ctx, OPCODE_COMPRESSED_TEX_SUB_IMAGE_3D, 12 );
if (n) {
n[1].e = target;
n[2].i = level;
n[3].i = xoffset;
n[4].i = yoffset;
n[5].i = zoffset;
n[6].i = (GLint) width;
n[7].i = (GLint) height;
n[8].i = (GLint) depth;
n[9].e = format;
n[10].i = imageSize;
n[11].data = image;
}
else if (image) {
FREE(image);
}
if (ctx->ExecuteFlag) {
(*ctx->Exec->CompressedTexSubImage3DARB)(target, level, xoffset, yoffset,
zoffset, width, height, depth, format, imageSize, data);
}
}


@@ -4433,6 +4675,31 @@ static void execute_list( GLcontext *ctx, GLuint list )
case OPCODE_PIXEL_TEXGEN_PARAMETER_SGIS: /* GL_SGIS_pixel_texture */
(*ctx->Exec->PixelTexGenParameteriSGIS)( n[1].e, n[2].i );
break;
case OPCODE_COMPRESSED_TEX_IMAGE_1D: /* GL_ARB_texture_compression */
(*ctx->Exec->CompressedTexImage1DARB)(n[1].e, n[2].i, n[3].e,
n[4].i, n[5].i, n[6].i, n[7].data);
break;
case OPCODE_COMPRESSED_TEX_IMAGE_2D: /* GL_ARB_texture_compression */
(*ctx->Exec->CompressedTexImage2DARB)(n[1].e, n[2].i, n[3].e,
n[4].i, n[5].i, n[6].i, n[7].i, n[8].data);
break;
case OPCODE_COMPRESSED_TEX_IMAGE_3D: /* GL_ARB_texture_compression */
(*ctx->Exec->CompressedTexImage3DARB)(n[1].e, n[2].i, n[3].e,
n[4].i, n[5].i, n[6].i, n[7].i, n[8].i, n[9].data);
break;
case OPCODE_COMPRESSED_TEX_SUB_IMAGE_1D: /* GL_ARB_texture_compress */
(*ctx->Exec->CompressedTexSubImage1DARB)(n[1].e, n[2].i, n[3].i,
n[4].i, n[5].e, n[6].i, n[7].data);
break;
case OPCODE_COMPRESSED_TEX_SUB_IMAGE_2D: /* GL_ARB_texture_compress */
(*ctx->Exec->CompressedTexSubImage2DARB)(n[1].e, n[2].i, n[3].i,
n[4].i, n[5].i, n[6].i, n[7].e, n[8].i, n[9].data);
break;
case OPCODE_COMPRESSED_TEX_SUB_IMAGE_3D: /* GL_ARB_texture_compress */
(*ctx->Exec->CompressedTexSubImage3DARB)(n[1].e, n[2].i, n[3].i,
n[4].i, n[5].i, n[6].i, n[7].i, n[8].i,
n[9].e, n[10].i, n[11].data);
break;
case OPCODE_CONTINUE:
n = (Node *) n[1].next;
break;

+ 201
- 9
src/mesa/main/teximage.c Visa fil

@@ -1125,11 +1125,13 @@ subtexture_error_check( GLcontext *ctx, GLuint dimensions,
}
}

if (!_mesa_is_legal_format_and_type(format, type)) {
char message[100];
sprintf(message, "glTexSubImage%dD(format or type)", dimensions);
gl_error(ctx, GL_INVALID_ENUM, message);
return GL_TRUE;
if (!is_compressed_format(destTex->IntFormat)) {
if (!_mesa_is_legal_format_and_type(format, type)) {
char message[100];
sprintf(message, "glTexSubImage%dD(format or type)", dimensions);
gl_error(ctx, GL_INVALID_ENUM, message);
return GL_TRUE;
}
}

return GL_FALSE;
@@ -1810,19 +1812,45 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
switch (target) {
case GL_TEXTURE_1D:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[1];
texImage = texObj->Image[level];
break;
case GL_TEXTURE_2D:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[2];
texImage = texObj->Image[level];
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->Image[level];
break;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->NegX[level];
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->PosY[level];
break;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->NegY[level];
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->PosZ[level];
break;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->NegZ[level];
break;
case GL_TEXTURE_3D:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[3];
texImage = texObj->Image[level];
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glGetTexImage(target)" );
return;
}

texImage = texObj->Image[level];
if (!texImage) {
/* invalid mipmap level */
return;
@@ -2581,7 +2609,10 @@ _mesa_CompressedTexImage2DARB(GLenum target, GLint level,
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCompressedTexImage2DARB");

if (target == GL_TEXTURE_2D) {
if (target==GL_TEXTURE_2D ||
(ctx->Extensions.HaveTextureCubeMap &&
target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)) {
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
@@ -2678,7 +2709,7 @@ _mesa_CompressedTexImage3DARB(GLenum target, GLint level,
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCompressedTexImage3DARB");

if (target == GL_TEXTURE_1D) {
if (target == GL_TEXTURE_3D) {
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
@@ -2771,6 +2802,35 @@ _mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
GLsizei width, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GLboolean success = GL_FALSE;

if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0,
width, 1, 1, format, GL_NONE)) {
return; /* error was detected */
}

texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
texImage = texObj->Image[level];
assert(texImage);

if (width == 0 || !data)
return; /* no-op, not an error */

if (ctx->Driver.CompressedTexSubImage1D) {
success = (*ctx->Driver.CompressedTexSubImage1D)(ctx, target, level,
xoffset, width, format, imageSize, data, texObj, texImage);
}
if (!success) {
/* XXX what else can we do? */
gl_problem(ctx, "glCompressedTexSubImage1DARB failed!");
return;
}

}


@@ -2780,6 +2840,35 @@ _mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
GLenum format, GLsizei imageSize,
const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GLboolean success = GL_FALSE;

if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0,
width, height, 1, format, GL_NONE)) {
return; /* error was detected */
}

texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
texImage = texObj->Image[level];
assert(texImage);

if (width == 0 || height == 0 || !data)
return; /* no-op, not an error */

if (ctx->Driver.CompressedTexSubImage2D) {
success = (*ctx->Driver.CompressedTexSubImage2D)(ctx, target, level,
xoffset, yoffset, width, height, format,
imageSize, data, texObj, texImage);
}
if (!success) {
/* XXX what else can we do? */
gl_problem(ctx, "glCompressedTexSubImage2DARB failed!");
return;
}
}


@@ -2789,10 +2878,113 @@ _mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
GLsizei height, GLsizei depth, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GLboolean success = GL_FALSE;

if (subtexture_error_check(ctx, 3, target, level, xoffset, yoffset, zoffset,
width, height, depth, format, GL_NONE)) {
return; /* error was detected */
}

texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
texImage = texObj->Image[level];
assert(texImage);

if (width == 0 || height == 0 || depth == 0 || !data)
return; /* no-op, not an error */

if (ctx->Driver.CompressedTexSubImage3D) {
success = (*ctx->Driver.CompressedTexSubImage3D)(ctx, target, level,
xoffset, yoffset, zoffset, width, height, depth,
format, imageSize, data, texObj, texImage);
}
if (!success) {
/* XXX what else can we do? */
gl_problem(ctx, "glCompressedTexSubImage3DARB failed!");
return;
}
}


void
_mesa_GetCompressedTexImageARB(GLenum target, GLint lod, GLvoid *img)
_mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)
{
GET_CURRENT_CONTEXT(ctx);
const struct gl_texture_object *texObj;
struct gl_texture_image *texImage;

ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetCompressedTexImageARB");

if (level < 0 || level >= ctx->Const.MaxTextureLevels) {
gl_error( ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)" );
return;
}

switch (target) {
case GL_TEXTURE_1D:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[1];
texImage = texObj->Image[level];
break;
case GL_TEXTURE_2D:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[2];
texImage = texObj->Image[level];
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->Image[level];
break;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->NegX[level];
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->PosY[level];
break;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->NegY[level];
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->PosZ[level];
break;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap;
texImage = texObj->NegZ[level];
break;
case GL_TEXTURE_3D:
texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[3];
texImage = texObj->Image[level];
break;
default:
gl_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)");
return;
}

if (!texImage) {
/* invalid mipmap level */
gl_error(ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)");
return;
}

if (!texImage->IsCompressed) {
gl_error(ctx, GL_INVALID_OPERATION, "glGetCompressedTexImageARB");
return;
}

if (!img)
return;

if (ctx->Driver.GetCompressedTexImage) {
(*ctx->Driver.GetCompressedTexImage)(ctx, target, level, img, texObj,
texImage);
}
else {
gl_problem(ctx, "Driver doesn't implement GetCompressedTexImage");
}
}

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