switch (wrapMode) {
case GL_CLAMP:
/* Not exactly what the spec says, but it matches NVIDIA output */
- fcol = CLAMP(coord - 0.5F, 0.0, max-1);
+ fcol = CLAMP(coord - 0.5F, 0.0F, max - 1);
i0 = IFLOOR(fcol);
i1 = i0 + 1;
break;
}
+/**
+ * Compute slice/image to use for 1D or 2D array texture.
+ */
+static INLINE GLint
+tex_array_slice(GLfloat coord, GLsizei size)
+{
+ GLint slice = IFLOOR(coord + 0.5f);
+ slice = CLAMP(slice, 0, size - 1);
+ return slice;
+}
+
+
/**
* Compute nearest integer texcoords for given texobj and coordinate.
+ * NOTE: only used for depth texture sampling.
*/
static INLINE void
nearest_texcoord(const struct gl_texture_object *texObj,
+ GLuint level,
const GLfloat texcoord[4],
GLint *i, GLint *j, GLint *k)
{
- const GLint baseLevel = texObj->BaseLevel;
- const struct gl_texture_image *img = texObj->Image[0][baseLevel];
+ const struct gl_texture_image *img = texObj->Image[0][level];
const GLint width = img->Width;
const GLint height = img->Height;
const GLint depth = img->Depth;
break;
case GL_TEXTURE_1D_ARRAY_EXT:
*i = nearest_texel_location(texObj->WrapS, img, width, texcoord[0]);
- *j = clamp_rect_coord_nearest(texObj->WrapT, texcoord[1], height);
+ *j = tex_array_slice(texcoord[1], height);
*k = 0;
break;
case GL_TEXTURE_2D_ARRAY_EXT:
*i = nearest_texel_location(texObj->WrapS, img, width, texcoord[0]);
*j = nearest_texel_location(texObj->WrapT, img, height, texcoord[1]);
- *k = clamp_rect_coord_nearest(texObj->WrapR, texcoord[2], depth);
+ *k = tex_array_slice(texcoord[2], depth);
break;
default:
*i = *j = *k = 0;
/**
* Compute linear integer texcoords for given texobj and coordinate.
+ * NOTE: only used for depth texture sampling.
*/
static INLINE void
linear_texcoord(const struct gl_texture_object *texObj,
+ GLuint level,
const GLfloat texcoord[4],
GLint *i0, GLint *i1, GLint *j0, GLint *j1, GLint *slice,
GLfloat *wi, GLfloat *wj)
{
- const GLint baseLevel = texObj->BaseLevel;
- const struct gl_texture_image *img = texObj->Image[0][baseLevel];
+ const struct gl_texture_image *img = texObj->Image[0][level];
const GLint width = img->Width;
const GLint height = img->Height;
const GLint depth = img->Depth;
case GL_TEXTURE_1D_ARRAY_EXT:
linear_texel_locations(texObj->WrapS, img, width,
texcoord[0], i0, i1, wi);
- *j0 = clamp_rect_coord_nearest(texObj->WrapT, texcoord[1], height);
+ *j0 = tex_array_slice(texcoord[1], height);
*j1 = *j0;
*slice = 0;
break;
texcoord[0], i0, i1, wi);
linear_texel_locations(texObj->WrapT, img, height,
texcoord[1], j0, j1, wj);
- *slice = clamp_rect_coord_nearest(texObj->WrapR, texcoord[2], depth);
+ *slice = tex_array_slice(texcoord[2], depth);
break;
default:
const struct gl_texture_image *img,
GLfloat rgba[4])
{
- switch (img->TexFormat->BaseFormat) {
+ switch (img->_BaseFormat) {
case GL_RGB:
- rgba[0] = tObj->BorderColor[0];
- rgba[1] = tObj->BorderColor[1];
- rgba[2] = tObj->BorderColor[2];
+ rgba[0] = tObj->BorderColor.f[0];
+ rgba[1] = tObj->BorderColor.f[1];
+ rgba[2] = tObj->BorderColor.f[2];
rgba[3] = 1.0F;
break;
case GL_ALPHA:
rgba[0] = rgba[1] = rgba[2] = 0.0;
- rgba[3] = tObj->BorderColor[3];
+ rgba[3] = tObj->BorderColor.f[3];
break;
case GL_LUMINANCE:
- rgba[0] = rgba[1] = rgba[2] = tObj->BorderColor[0];
+ rgba[0] = rgba[1] = rgba[2] = tObj->BorderColor.f[0];
rgba[3] = 1.0;
break;
case GL_LUMINANCE_ALPHA:
- rgba[0] = rgba[1] = rgba[2] = tObj->BorderColor[0];
- rgba[3] = tObj->BorderColor[3];
+ rgba[0] = rgba[1] = rgba[2] = tObj->BorderColor.f[0];
+ rgba[3] = tObj->BorderColor.f[3];
break;
case GL_INTENSITY:
- rgba[0] = rgba[1] = rgba[2] = rgba[3] = tObj->BorderColor[0];
+ rgba[0] = rgba[1] = rgba[2] = rgba[3] = tObj->BorderColor.f[0];
break;
default:
- COPY_4V(rgba, tObj->BorderColor);
+ COPY_4V(rgba, tObj->BorderColor.f);
}
}
ASSERT(tObj->WrapS == GL_REPEAT);
ASSERT(tObj->WrapT == GL_REPEAT);
ASSERT(img->Border == 0);
- ASSERT(img->TexFormat->BaseFormat != GL_COLOR_INDEX);
+ ASSERT(img->_BaseFormat != GL_COLOR_INDEX);
ASSERT(img->_IsPowerOfTwo);
linear_repeat_texel_location(width, texcoord[0], &i0, &i1, &wi);
ASSERT(tObj->WrapS==GL_REPEAT);
ASSERT(tObj->WrapT==GL_REPEAT);
ASSERT(img->Border==0);
- ASSERT(img->TexFormat->MesaFormat==MESA_FORMAT_RGB);
+ ASSERT(img->TexFormat == MESA_FORMAT_RGB888);
ASSERT(img->_IsPowerOfTwo);
for (k=0; k<n; k++) {
GLint i = IFLOOR(texcoords[k][0] * width) & colMask;
GLint j = IFLOOR(texcoords[k][1] * height) & rowMask;
GLint pos = (j << shift) | i;
- GLchan *texel = ((GLchan *) img->Data) + 3*pos;
- rgba[k][RCOMP] = CHAN_TO_FLOAT(texel[0]);
- rgba[k][GCOMP] = CHAN_TO_FLOAT(texel[1]);
- rgba[k][BCOMP] = CHAN_TO_FLOAT(texel[2]);
+ GLubyte *texel = ((GLubyte *) img->Data) + 3*pos;
+ rgba[k][RCOMP] = UBYTE_TO_FLOAT(texel[2]);
+ rgba[k][GCOMP] = UBYTE_TO_FLOAT(texel[1]);
+ rgba[k][BCOMP] = UBYTE_TO_FLOAT(texel[0]);
}
}
ASSERT(tObj->WrapS==GL_REPEAT);
ASSERT(tObj->WrapT==GL_REPEAT);
ASSERT(img->Border==0);
- ASSERT(img->TexFormat->MesaFormat==MESA_FORMAT_RGBA);
+ ASSERT(img->TexFormat == MESA_FORMAT_RGBA8888);
ASSERT(img->_IsPowerOfTwo);
for (i = 0; i < n; i++) {
const GLint col = IFLOOR(texcoords[i][0] * width) & colMask;
const GLint row = IFLOOR(texcoords[i][1] * height) & rowMask;
const GLint pos = (row << shift) | col;
- const GLchan *texel = ((GLchan *) img->Data) + (pos << 2); /* pos*4 */
- rgba[i][RCOMP] = CHAN_TO_FLOAT(texel[0]);
- rgba[i][GCOMP] = CHAN_TO_FLOAT(texel[1]);
- rgba[i][BCOMP] = CHAN_TO_FLOAT(texel[2]);
- rgba[i][ACOMP] = CHAN_TO_FLOAT(texel[3]);
+ const GLuint texel = *((GLuint *) img->Data + pos);
+ rgba[i][RCOMP] = UBYTE_TO_FLOAT( (texel >> 24) );
+ rgba[i][GCOMP] = UBYTE_TO_FLOAT( (texel >> 16) & 0xff );
+ rgba[i][BCOMP] = UBYTE_TO_FLOAT( (texel >> 8) & 0xff );
+ rgba[i][ACOMP] = UBYTE_TO_FLOAT( (texel ) & 0xff );
}
}
const GLboolean repeatNoBorderPOT = (tObj->WrapS == GL_REPEAT)
&& (tObj->WrapT == GL_REPEAT)
&& (tImg->Border == 0 && (tImg->Width == tImg->RowStride))
- && (tImg->TexFormat->BaseFormat != GL_COLOR_INDEX)
+ && (tImg->_BaseFormat != GL_COLOR_INDEX)
&& tImg->_IsPowerOfTwo;
ASSERT(lambda != NULL);
switch (tObj->MinFilter) {
case GL_NEAREST:
if (repeatNoBorderPOT) {
- switch (tImg->TexFormat->MesaFormat) {
- case MESA_FORMAT_RGB:
+ switch (tImg->TexFormat) {
+ case MESA_FORMAT_RGB888:
opt_sample_rgb_2d(ctx, tObj, m, texcoords + minStart,
NULL, rgba + minStart);
break;
- case MESA_FORMAT_RGBA:
+ case MESA_FORMAT_RGBA8888:
opt_sample_rgba_2d(ctx, tObj, m, texcoords + minStart,
NULL, rgba + minStart);
break;
switch (tObj->MagFilter) {
case GL_NEAREST:
if (repeatNoBorderPOT) {
- switch (tImg->TexFormat->MesaFormat) {
- case MESA_FORMAT_RGB:
+ switch (tImg->TexFormat) {
+ case MESA_FORMAT_RGB888:
opt_sample_rgb_2d(ctx, tObj, m, texcoords + magStart,
NULL, rgba + magStart);
break;
- case MESA_FORMAT_RGBA:
+ case MESA_FORMAT_RGBA8888:
opt_sample_rgba_2d(ctx, tObj, m, texcoords + magStart,
NULL, rgba + magStart);
break;
ASSERT(tObj->WrapT == GL_CLAMP ||
tObj->WrapT == GL_CLAMP_TO_EDGE ||
tObj->WrapT == GL_CLAMP_TO_BORDER);
- ASSERT(img->TexFormat->BaseFormat != GL_COLOR_INDEX);
+ ASSERT(img->_BaseFormat != GL_COLOR_INDEX);
for (i = 0; i < n; i++) {
GLint row, col;
ASSERT(tObj->WrapT == GL_CLAMP ||
tObj->WrapT == GL_CLAMP_TO_EDGE ||
tObj->WrapT == GL_CLAMP_TO_BORDER);
- ASSERT(img->TexFormat->BaseFormat != GL_COLOR_INDEX);
+ ASSERT(img->_BaseFormat != GL_COLOR_INDEX);
for (i = 0; i < n; i++) {
GLint i0, j0, i1, j1;
}
-
/**********************************************************************/
/* 2D Texture Array Sampling Functions */
/**********************************************************************/
i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]);
j = nearest_texel_location(tObj->WrapT, img, height, texcoord[1]);
- array = clamp_rect_coord_nearest(tObj->WrapR, texcoord[2], depth);
+ array = tex_array_slice(texcoord[2], depth);
if (i < 0 || i >= (GLint) img->Width ||
j < 0 || j >= (GLint) img->Height ||
linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a);
linear_texel_locations(tObj->WrapT, img, height, texcoord[1], &j0, &j1, &b);
- array = clamp_rect_coord_nearest(tObj->WrapR, texcoord[2], depth);
+ array = tex_array_slice(texcoord[2], depth);
if (array < 0 || array >= depth) {
- COPY_4V(rgba, tObj->BorderColor);
+ COPY_4V(rgba, tObj->BorderColor.f);
}
else {
if (img->Border) {
(void) ctx;
i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]);
- array = clamp_rect_coord_nearest(tObj->WrapT, texcoord[1], height);
+ array = tex_array_slice(texcoord[1], height);
if (i < 0 || i >= (GLint) img->Width ||
array < 0 || array >= (GLint) img->Height) {
GLfloat t0[4], t1[4];
linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a);
- array = clamp_rect_coord_nearest(tObj->WrapT, texcoord[1], height);
+ array = tex_array_slice(texcoord[1], height);
if (img->Border) {
i0 += img->Border;
/**
- * Sample a shadow/depth texture.
+ * Choose the mipmap level to use when sampling from a depth texture.
+ */
+static int
+choose_depth_texture_level(const struct gl_texture_object *tObj, GLfloat lambda)
+{
+ GLint level;
+
+ lambda = CLAMP(lambda, tObj->MinLod, tObj->MaxLod);
+
+ level = (GLint) lambda;
+
+ level = CLAMP(level, tObj->BaseLevel, tObj->_MaxLevel);
+
+ return level;
+}
+
+
+/**
+ * Sample a shadow/depth texture. This function is incomplete. It doesn't
+ * check for minification vs. magnification, etc.
*/
static void
sample_depth_texture( GLcontext *ctx,
const GLfloat texcoords[][4], const GLfloat lambda[],
GLfloat texel[][4] )
{
- const GLint baseLevel = tObj->BaseLevel;
- const struct gl_texture_image *img = tObj->Image[0][baseLevel];
+ const GLint level = choose_depth_texture_level(tObj, lambda[0]);
+ const struct gl_texture_image *img = tObj->Image[0][level];
const GLint width = img->Width;
const GLint height = img->Height;
const GLint depth = img->Depth;
GLenum function;
GLfloat result;
- (void) lambda;
-
- ASSERT(img->TexFormat->BaseFormat == GL_DEPTH_COMPONENT ||
- img->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT);
+ ASSERT(img->_BaseFormat == GL_DEPTH_COMPONENT ||
+ img->_BaseFormat == GL_DEPTH_STENCIL_EXT);
ASSERT(tObj->Target == GL_TEXTURE_1D ||
tObj->Target == GL_TEXTURE_2D ||
GLfloat depthSample;
GLint col, row, slice;
- nearest_texcoord(tObj, texcoords[i], &col, &row, &slice);
+ nearest_texcoord(tObj, level, texcoords[i], &col, &row, &slice);
if (col >= 0 && row >= 0 && col < width && row < height &&
slice >= 0 && slice < depth) {
img->FetchTexelf(img, col, row, slice, &depthSample);
}
else {
- depthSample = tObj->BorderColor[0];
+ depthSample = tObj->BorderColor.f[0];
}
result = shadow_compare(function, texcoords[i][compare_coord],
GLfloat wi, wj;
GLuint useBorderTexel;
- linear_texcoord(tObj, texcoords[i], &i0, &i1, &j0, &j1, &slice,
+ linear_texcoord(tObj, level, texcoords[i], &i0, &i1, &j0, &j1, &slice,
&wi, &wj);
useBorderTexel = 0;
}
if (slice < 0 || slice >= (GLint) depth) {
- depth00 = tObj->BorderColor[0];
- depth01 = tObj->BorderColor[0];
- depth10 = tObj->BorderColor[0];
- depth11 = tObj->BorderColor[0];
+ depth00 = tObj->BorderColor.f[0];
+ depth01 = tObj->BorderColor.f[0];
+ depth10 = tObj->BorderColor.f[0];
+ depth11 = tObj->BorderColor.f[0];
}
else {
/* get four depth samples from the texture */
if (useBorderTexel & (I0BIT | J0BIT)) {
- depth00 = tObj->BorderColor[0];
+ depth00 = tObj->BorderColor.f[0];
}
else {
img->FetchTexelf(img, i0, j0, slice, &depth00);
}
if (useBorderTexel & (I1BIT | J0BIT)) {
- depth10 = tObj->BorderColor[0];
+ depth10 = tObj->BorderColor.f[0];
}
else {
img->FetchTexelf(img, i1, j0, slice, &depth10);
if (tObj->Target != GL_TEXTURE_1D_ARRAY_EXT) {
if (useBorderTexel & (I0BIT | J1BIT)) {
- depth01 = tObj->BorderColor[0];
+ depth01 = tObj->BorderColor.f[0];
}
else {
img->FetchTexelf(img, i0, j1, slice, &depth01);
}
if (useBorderTexel & (I1BIT | J1BIT)) {
- depth11 = tObj->BorderColor[0];
+ depth11 = tObj->BorderColor.f[0];
}
else {
img->FetchTexelf(img, i1, j1, slice, &depth11);
rgba[i][RCOMP] = 0;
rgba[i][GCOMP] = 0;
rgba[i][BCOMP] = 0;
- rgba[i][ACOMP] = CHAN_MAX;
+ rgba[i][ACOMP] = 1.0;
}
}
}
else {
const GLboolean needLambda = (GLboolean) (t->MinFilter != t->MagFilter);
- const GLenum format = t->Image[0][t->BaseLevel]->TexFormat->BaseFormat;
+ const GLenum format = t->Image[0][t->BaseLevel]->_BaseFormat;
switch (t->Target) {
case GL_TEXTURE_1D:
t->WrapT == GL_REPEAT &&
img->_IsPowerOfTwo &&
img->Border == 0 &&
- img->TexFormat->MesaFormat == MESA_FORMAT_RGB) {
+ img->TexFormat == MESA_FORMAT_RGB888) {
return &opt_sample_rgb_2d;
}
else if (t->WrapS == GL_REPEAT &&
t->WrapT == GL_REPEAT &&
img->_IsPowerOfTwo &&
img->Border == 0 &&
- img->TexFormat->MesaFormat == MESA_FORMAT_RGBA) {
+ img->TexFormat == MESA_FORMAT_RGBA8888) {
return &opt_sample_rgba_2d;
}
else {
projects / mesa.git / blobdiff