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Diffstat (limited to 'src/mesa/main/texstore.c')
-rw-r--r--src/mesa/main/texstore.c131
1 files changed, 117 insertions, 14 deletions
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index 9b38d7e813d..224f79dd783 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -1,4 +1,4 @@
-/* $Id: texstore.c,v 1.4 2001/02/07 19:02:23 brianp Exp $ */
+/* $Id: texstore.c,v 1.5 2001/02/17 00:15:39 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -150,6 +150,13 @@ fetch_1d_texel(GLcontext *ctx,
rgba[BCOMP] = texel[2];
rgba[ACOMP] = texel[3];
return;
+ case GL_DEPTH_COMPONENT:
+ {
+ const GLfloat *data = (const GLfloat *) img->Data;
+ GLfloat *texel = (GLfloat *) rgba;
+ *texel = data[i];
+ return;
+ }
default:
gl_problem(NULL, "Bad format in fetch_1d_texel");
return;
@@ -210,6 +217,13 @@ fetch_2d_texel(GLcontext *ctx,
rgba[BCOMP] = texel[2];
rgba[ACOMP] = texel[3];
return;
+ case GL_DEPTH_COMPONENT:
+ {
+ const GLfloat *data = (const GLfloat *) img->Data;
+ GLfloat *texel = (GLfloat *) rgba;
+ *texel = data[width * j + i];
+ return;
+ }
default:
gl_problem(NULL, "Bad format in fetch_2d_texel");
}
@@ -273,6 +287,13 @@ fetch_3d_texel(GLcontext *ctx,
rgba[BCOMP] = texel[2];
rgba[ACOMP] = texel[3];
return;
+ case GL_DEPTH_COMPONENT:
+ {
+ const GLfloat *data = (const GLfloat *) img->Data;
+ GLfloat *texel = (GLfloat *) rgba;
+ *texel = data[rectarea * k + width * j + i];
+ return;
+ }
default:
gl_problem(NULL, "Bad format in fetch_3d_texel");
}
@@ -298,6 +319,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 0;
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_LUMINANCE:
texImage->RedBits = 0;
@@ -307,6 +329,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 8 * sizeof(GLchan);
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_LUMINANCE_ALPHA:
texImage->RedBits = 0;
@@ -316,6 +339,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 8 * sizeof(GLchan);
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_INTENSITY:
texImage->RedBits = 0;
@@ -325,6 +349,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 8 * sizeof(GLchan);
texImage->LuminanceBits = 0;
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_RED:
texImage->RedBits = 8 * sizeof(GLchan);
@@ -334,6 +359,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 0;
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_GREEN:
texImage->RedBits = 0;
@@ -343,6 +369,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 0;
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_BLUE:
texImage->RedBits = 0;
@@ -352,6 +379,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 0;
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_RGB:
case GL_BGR:
@@ -362,6 +390,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 0;
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_RGBA:
case GL_BGRA:
@@ -373,6 +402,7 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 0;
texImage->IndexBits = 0;
+ texImage->DepthBits = 0;
break;
case GL_COLOR_INDEX:
texImage->RedBits = 0;
@@ -382,6 +412,17 @@ set_teximage_component_sizes( struct gl_texture_image *texImage )
texImage->IntensityBits = 0;
texImage->LuminanceBits = 0;
texImage->IndexBits = 8 * sizeof(GLchan);
+ texImage->DepthBits = 0;
+ break;
+ case GL_DEPTH_COMPONENT:
+ texImage->RedBits = 0;
+ texImage->GreenBits = 0;
+ texImage->BlueBits = 0;
+ texImage->AlphaBits = 0;
+ texImage->IntensityBits = 0;
+ texImage->LuminanceBits = 0;
+ texImage->IndexBits = 0;
+ texImage->DepthBits = 8 * sizeof(GLfloat);
break;
default:
gl_problem(NULL, "unexpected format in set_teximage_component_sizes");
@@ -456,6 +497,11 @@ components_in_intformat( GLint format )
case GL_COLOR_INDEX12_EXT:
case GL_COLOR_INDEX16_EXT:
return 1;
+ case GL_DEPTH_COMPONENT:
+ case GL_DEPTH_COMPONENT16_SGIX:
+ case GL_DEPTH_COMPONENT24_SGIX:
+ case GL_DEPTH_COMPONENT32_SGIX:
+ return 1;
default:
return -1; /* error */
}
@@ -516,8 +562,7 @@ _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions,
texComponents = components_in_intformat(texFormat);
/* try common 2D texture cases first */
- if (!ctx->_ImageTransferState && dimensions == 2
- && srcType == CHAN_TYPE) {
+ if (!ctx->_ImageTransferState && dimensions == 2 && srcType == CHAN_TYPE) {
if (srcFormat == texFormat) {
/* This will cover the common GL_RGB, GL_RGBA, GL_ALPHA,
@@ -593,6 +638,31 @@ _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions,
dest += dstImageStride;
}
}
+ else if (texFormat == GL_DEPTH_COMPONENT) {
+ /* Depth texture (shadow maps) */
+ const GLenum texType = GL_FLOAT;
+ GLint img, row;
+ GLfloat *dest = (GLfloat *) texAddr + dstZoffset * dstImageStride
+ + dstYoffset * dstRowStride
+ + dstXoffset * texComponents;
+ for (img = 0; img < srcDepth; img++) {
+ GLfloat *destRow = dest;
+ for (row = 0; row < srcHeight; row++) {
+ const GLvoid *src = _mesa_image_address(srcPacking,
+ srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
+ (void) src;
+ (void) texType;
+ /* XXX destRow: GLfloat vs. GLdepth? */
+ /*
+ _mesa_unpack_depth_span(ctx, srcWidth, texType, destRow,
+ srcType, src, srcPacking,
+ ctx->_ImageTransferState);
+ */
+ destRow += dstRowStride;
+ }
+ dest += dstImageStride;
+ }
+ }
else {
/* regular, color texture */
if ((dimensions == 1 && ctx->Pixel.Convolution1DEnabled) ||
@@ -713,6 +783,7 @@ _mesa_store_teximage1d(GLcontext *ctx, GLenum target, GLint level,
struct gl_texture_image *texImage)
{
const GLint components = components_in_intformat(internalFormat);
+ GLint compSize;
GLint postConvWidth = width;
if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
@@ -721,13 +792,19 @@ _mesa_store_teximage1d(GLcontext *ctx, GLenum target, GLint level,
/* setup the teximage struct's fields */
texImage->Format = (GLenum) _mesa_base_tex_format(ctx, internalFormat);
- texImage->Type = CHAN_TYPE; /* usually GL_UNSIGNED_BYTE */
+ if (format == GL_DEPTH_COMPONENT) {
+ texImage->Type = GL_FLOAT; /* XXX or GL_UNSIGNED_INT? */
+ compSize = sizeof(GLfloat);
+ }
+ else {
+ texImage->Type = CHAN_TYPE; /* usually GL_UNSIGNED_BYTE */
+ compSize = sizeof(CHAN_TYPE);
+ }
texImage->FetchTexel = fetch_1d_texel;
set_teximage_component_sizes(texImage);
/* allocate memory */
- texImage->Data = (GLchan *) MALLOC(postConvWidth
- * components * sizeof(GLchan));
+ texImage->Data = (GLchan *) MALLOC(postConvWidth * components * compSize);
if (!texImage->Data)
return; /* out of memory */
@@ -757,6 +834,7 @@ _mesa_store_teximage2d(GLcontext *ctx, GLenum target, GLint level,
struct gl_texture_image *texImage)
{
const GLint components = components_in_intformat(internalFormat);
+ GLint compSize;
GLint postConvWidth = width, postConvHeight = height;
if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
@@ -766,13 +844,20 @@ _mesa_store_teximage2d(GLcontext *ctx, GLenum target, GLint level,
/* setup the teximage struct's fields */
texImage->Format = (GLenum) _mesa_base_tex_format(ctx, internalFormat);
- texImage->Type = CHAN_TYPE; /* usually GL_UNSIGNED_BYTE */
+ if (format == GL_DEPTH_COMPONENT) {
+ texImage->Type = GL_FLOAT; /* XXX or GL_UNSIGNED_INT? */
+ compSize = sizeof(GLfloat);
+ }
+ else {
+ texImage->Type = CHAN_TYPE; /* usually GL_UNSIGNED_BYTE */
+ compSize = sizeof(CHAN_TYPE);
+ }
texImage->FetchTexel = fetch_2d_texel;
set_teximage_component_sizes(texImage);
/* allocate memory */
texImage->Data = (GLchan *) MALLOC(postConvWidth * postConvHeight
- * components * sizeof(GLchan));
+ * components * compSize);
if (!texImage->Data)
return; /* out of memory */
@@ -803,16 +888,24 @@ _mesa_store_teximage3d(GLcontext *ctx, GLenum target, GLint level,
struct gl_texture_image *texImage)
{
const GLint components = components_in_intformat(internalFormat);
+ GLint compSize;
/* setup the teximage struct's fields */
texImage->Format = (GLenum) _mesa_base_tex_format(ctx, internalFormat);
- texImage->Type = CHAN_TYPE; /* usually GL_UNSIGNED_BYTE */
+ if (format == GL_DEPTH_COMPONENT) {
+ texImage->Type = GL_FLOAT; /* XXX or GL_UNSIGNED_INT? */
+ compSize = sizeof(GLfloat);
+ }
+ else {
+ texImage->Type = CHAN_TYPE; /* usually GL_UNSIGNED_BYTE */
+ compSize = sizeof(CHAN_TYPE);
+ }
texImage->FetchTexel = fetch_3d_texel;
set_teximage_component_sizes(texImage);
/* allocate memory */
texImage->Data = (GLchan *) MALLOC(width * height * depth
- * components * sizeof(GLchan));
+ * components * compSize);
if (!texImage->Data)
return; /* out of memory */
@@ -861,10 +954,11 @@ _mesa_store_texsubimage2d(GLcontext *ctx, GLenum target, GLint level,
struct gl_texture_image *texImage)
{
const GLint components = components_in_intformat(texImage->IntFormat);
+ const GLint compSize = _mesa_sizeof_type(texImage->Type);
_mesa_transfer_teximage(ctx, 2, texImage->Format, texImage->Data,
width, height, 1, /* src size */
xoffset, yoffset, 0, /* dest offsets */
- texImage->Width * components * sizeof(GLchan),
+ texImage->Width * components * compSize,
0, /* dstImageStride */
format, type, pixels, packing);
}
@@ -883,12 +977,13 @@ _mesa_store_texsubimage3d(GLcontext *ctx, GLenum target, GLint level,
struct gl_texture_image *texImage)
{
const GLint components = components_in_intformat(texImage->IntFormat);
+ const GLint compSize = _mesa_sizeof_type(texImage->Type);
_mesa_transfer_teximage(ctx, 3, texImage->Format, texImage->Data,
width, height, depth, /* src size */
xoffset, yoffset, xoffset, /* dest offsets */
- texImage->Width * components * sizeof(GLchan),
+ texImage->Width * components * compSize,
texImage->Width * texImage->Height * components
- * sizeof(GLchan),
+ * compSize,
format, type, pixels, packing);
}
@@ -963,6 +1058,7 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
+ GLint compSize;
(void) format;
(void) type;
@@ -978,7 +1074,14 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
*/
/* setup the teximage struct's fields */
texImage->Format = (GLenum) _mesa_base_tex_format(ctx, internalFormat);
- texImage->Type = CHAN_TYPE; /* usually GL_UNSIGNED_BYTE */
+ if (format == GL_DEPTH_COMPONENT) {
+ texImage->Type = GL_FLOAT; /* XXX or GL_UNSIGNED_INT? */
+ compSize = sizeof(GLfloat);
+ }
+ else {
+ texImage->Type = CHAN_TYPE; /* usually GL_UNSIGNED_BYTE */
+ compSize = sizeof(CHAN_TYPE);
+ }
set_teximage_component_sizes(texImage);
return GL_TRUE;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-05 02:46:28 +0000