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Implemented GL_ARB_texture_non_power_of_two (except for auto mipmap generation).

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This commit is contained in:
Brian Paul
2003-07-03 03:05:48 +00:00
parent 32bac60519
commit 887e2cf01a
7 changed files with 108 additions and 36 deletions
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12
src/mesa/drivers/x11/xm_dd.c
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@@ -937,9 +937,15 @@ test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
if (target == GL_PROXY_TEXTURE_3D) {
/* special case for 3D textures */
if (width * height * depth > 512 * 512 * 64 ||
width < 2 * border || _mesa_bitcount(width - 2 * border) != 1 ||
height < 2 * border || _mesa_bitcount(height - 2 * border) != 1 ||
depth < 2 * border || _mesa_bitcount(depth - 2 * border) != 1) {
width < 2 * border ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(width - 2 * border) != 1) ||
height < 2 * border ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(height - 2 * border) != 1) ||
depth < 2 * border ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(depth - 2 * border) != 1)) {
/* Bad size, or too many texels */
return GL_FALSE;
}

3
src/mesa/main/extensions.c
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@@ -57,6 +57,7 @@ static const struct {
{ OFF, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar) },
{ OFF, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3) },
{ OFF, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
{ OFF, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two)},
{ ON, "GL_ARB_transpose_matrix", 0 },
{ OFF, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object) },
{ OFF, "GL_ARB_vertex_program", F(ARB_vertex_program) },
@@ -163,6 +164,7 @@ _mesa_enable_sw_extensions(GLcontext *ctx)
ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
#if FEATURE_ARB_vertex_program
/*ctx->Extensions.ARB_vertex_program = GL_TRUE;*/
#endif
@@ -291,6 +293,7 @@ _mesa_enable_1_5_extensions(GLcontext *ctx)
{
ctx->Extensions.ARB_occlusion_query = GL_TRUE;
ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;
ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
}

1
src/mesa/main/mtypes.h
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@@ -1469,6 +1469,7 @@ struct gl_extensions {
GLboolean ARB_texture_env_crossbar;
GLboolean ARB_texture_env_dot3;
GLboolean ARB_texture_mirrored_repeat;
GLboolean ARB_texture_non_power_of_two;
GLboolean ARB_vertex_buffer_object;
GLboolean ARB_vertex_program;
GLboolean ARB_window_pos;

63
src/mesa/main/teximage.c
View File

@@ -103,9 +103,8 @@ static void PrintTexture(GLcontext *ctx, const struct gl_texture_image *img)
/*
* Compute log base 2 of n.
* If n isn't an exact power of two return -1.
* If n < 0 return -1.
* Compute floor(log_base_2(n)).
* If n <= 0 return -1.
*/
static int
logbase2( int n )
@@ -113,7 +112,7 @@ logbase2( int n )
GLint i = 1;
GLint log2 = 0;
if (n < 0) {
if (n <= 0) {
return -1;
}
@@ -122,7 +121,7 @@ logbase2( int n )
log2++;
}
if (i != n) {
return -1;
return log2 - 1;
}
else {
return log2;
@@ -820,6 +819,7 @@ clear_teximage_fields(struct gl_texture_image *img)
/*
* Initialize basic fields of the gl_texture_image struct.
* Note: width, height and depth include the border.
*/
void
_mesa_init_teximage_fields(GLcontext *ctx, GLenum target,
@@ -845,9 +845,9 @@ _mesa_init_teximage_fields(GLcontext *ctx, GLenum target,
img->DepthLog2 = 0;
else
img->DepthLog2 = logbase2(depth - 2 * border);
img->Width2 = 1 << img->WidthLog2;
img->Height2 = 1 << img->HeightLog2;
img->Depth2 = 1 << img->DepthLog2;
img->Width2 = width - 2 * border; /*1 << img->WidthLog2;*/
img->Height2 = height - 2 * border; /*1 << img->HeightLog2;*/
img->Depth2 = depth - 2 * border; /*1 << img->DepthLog2;*/
img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2);
img->IsCompressed = is_compressed_format(internalFormat);
if (img->IsCompressed)
@@ -856,6 +856,13 @@ _mesa_init_teximage_fields(GLcontext *ctx, GLenum target,
else
img->CompressedSize = 0;
if ((width == 1 || _mesa_bitcount(width - 2 * border) == 1) &&
(height == 1 || _mesa_bitcount(height - 2 * border) == 1) &&
(depth == 1 || _mesa_bitcount(depth - 2 * border) == 1))
img->_IsPowerOfTwo = GL_TRUE;
else
img->_IsPowerOfTwo = GL_FALSE;
/* Compute Width/Height/DepthScale for mipmap lod computation */
if (target == GL_TEXTURE_RECTANGLE_NV) {
/* scale = 1.0 since texture coords directly map to texels */
@@ -906,7 +913,8 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
case GL_PROXY_TEXTURE_1D:
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
if (width < 2 * border || width > 2 + maxSize ||
_mesa_bitcount(width - 2 * border) != 1 ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(width - 2 * border) != 1) ||
level >= ctx->Const.MaxTextureLevels) {
/* bad width or level */
return GL_FALSE;
@@ -915,9 +923,11 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
case GL_PROXY_TEXTURE_2D:
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
if (width < 2 * border || width > 2 + maxSize ||
_mesa_bitcount(width - 2 * border) != 1 ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(width - 2 * border) != 1) ||
height < 2 * border || height > 2 + maxSize ||
_mesa_bitcount(height - 2 * border) != 1 ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(height - 2 * border) != 1) ||
level >= ctx->Const.MaxTextureLevels) {
/* bad width or height or level */
return GL_FALSE;
@@ -926,11 +936,14 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
case GL_PROXY_TEXTURE_3D:
maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
if (width < 2 * border || width > 2 + maxSize ||
_mesa_bitcount(width - 2 * border) != 1 ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(width - 2 * border) != 1) ||
height < 2 * border || height > 2 + maxSize ||
_mesa_bitcount(height - 2 * border) != 1 ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(height - 2 * border) != 1) ||
depth < 2 * border || depth > 2 + maxSize ||
_mesa_bitcount(depth - 2 * border) != 1 ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(depth - 2 * border) != 1) ||
level >= ctx->Const.Max3DTextureLevels) {
/* bad width or height or depth or level */
return GL_FALSE;
@@ -947,9 +960,11 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);
if (width < 2 * border || width > 2 + maxSize ||
_mesa_bitcount(width - 2 * border) != 1 ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(width - 2 * border) != 1) ||
height < 2 * border || height > 2 + maxSize ||
_mesa_bitcount(height - 2 * border) != 1 ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(height - 2 * border) != 1) ||
level >= ctx->Const.MaxCubeTextureLevels) {
/* bad width or height */
return GL_FALSE;
@@ -2458,14 +2473,20 @@ compressed_texture_error_check(GLcontext *ctx, GLint dimensions,
if (border != 0)
return GL_INVALID_VALUE;
if (width < 1 || width > maxTextureSize || logbase2(width) < 0)
/*
* XXX We should probably use the proxy texture error check function here.
*/
if (width < 1 || width > maxTextureSize ||
(!ctx->Extensions.ARB_texture_non_power_of_two && logbase2(width) < 0))
return GL_INVALID_VALUE;
if ((height < 1 || height > maxTextureSize || logbase2(height) < 0)
if ((height < 1 || height > maxTextureSize ||
(!ctx->Extensions.ARB_texture_non_power_of_two && logbase2(height) < 0))
&& dimensions > 1)
return GL_INVALID_VALUE;
if ((depth < 1 || depth > maxTextureSize || logbase2(depth) < 0)
if ((depth < 1 || depth > maxTextureSize ||
(!ctx->Extensions.ARB_texture_non_power_of_two && logbase2(depth) < 0))
&& dimensions > 2)
return GL_INVALID_VALUE;
@@ -2538,10 +2559,10 @@ compressed_subtexture_error_check(GLcontext *ctx, GLint dimensions,
if (!is_compressed_format(format))
return GL_INVALID_ENUM;
if (width < 1 || width > maxTextureSize || logbase2(width) < 0)
if (width < 1 || width > maxTextureSize)
return GL_INVALID_VALUE;
if ((height < 1 || height > maxTextureSize || logbase2(height) < 0)
if ((height < 1 || height > maxTextureSize)
&& dimensions > 1)
return GL_INVALID_VALUE;

8
src/mesa/main/texobj.c
View File

@@ -228,6 +228,7 @@ _mesa_copy_texture_object( struct gl_texture_object *dest,
dest->GenerateMipmap = src->GenerateMipmap;
dest->Palette = src->Palette;
dest->Complete = src->Complete;
dest->_IsPowerOfTwo = src->_IsPowerOfTwo;
}
@@ -257,6 +258,7 @@ _mesa_test_texobj_completeness( const GLcontext *ctx,
GLint maxLog2 = 0, maxLevels = 0;
t->Complete = GL_TRUE; /* be optimistic */
t->_IsPowerOfTwo = GL_TRUE; /* may be set FALSE below */
/* Always need the base level image */
if (!t->Image[baseLevel]) {
@@ -329,6 +331,12 @@ _mesa_test_texobj_completeness( const GLcontext *ctx,
}
}
/* check for non power of two */
if (!t->Image[baseLevel]->_IsPowerOfTwo) {
t->_IsPowerOfTwo = GL_FALSE;
}
/* extra checking for mipmaps */
if (t->MinFilter != GL_NEAREST && t->MinFilter != GL_LINEAR) {
/*
* Mipmapping: determine if we have a complete set of mipmaps

42
src/mesa/swrast/s_texture.c
View File

@@ -43,6 +43,20 @@
#define WEIGHT_SHIFT 16
/*
* Compute the remainder of a divided by b, but be careful with
* negative values so that GL_REPEAT mode works right.
*/
static INLINE GLint
repeat_remainder(GLint a, GLint b)
{
if (a >= 0)
return a % b;
else
return (a + 1) % b + b - 1;
}
/*
* Used to compute texel locations for linear sampling.
* Input:
@@ -57,9 +71,15 @@
{ \
if (wrapMode == GL_REPEAT) { \
U = S * SIZE - 0.5F; \
if (tObj->_IsPowerOfTwo) { \
I0 = IFLOOR(U) & (SIZE - 1); \
I1 = (I0 + 1) & (SIZE - 1); \
} \
else { \
I0 = repeat_remainder(IFLOOR(U), SIZE); \
I1 = repeat_remainder(I0 + 1, SIZE); \
} \
} \
else if (wrapMode == GL_CLAMP_TO_EDGE) { \
if (S <= 0.0F) \
U = 0.0F; \
@@ -150,7 +170,10 @@
/* s limited to [0,1) */ \
/* i limited to [0,size-1] */ \
I = IFLOOR(S * SIZE); \
if (tObj->_IsPowerOfTwo) \
I &= (SIZE - 1); \
else \
I = repeat_remainder(I, SIZE); \
} \
else if (wrapMode == GL_CLAMP_TO_EDGE) { \
/* s limited to [min,max] */ \
@@ -230,6 +253,7 @@
}
/* Power of two image sizes only */
#define COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(S, U, SIZE, I0, I1) \
{ \
U = S * SIZE - 0.5F; \
@@ -1215,6 +1239,7 @@ sample_2d_linear_repeat(GLcontext *ctx,
ASSERT(tObj->WrapT == GL_REPEAT);
ASSERT(img->Border == 0);
ASSERT(img->Format != GL_COLOR_INDEX);
ASSERT(img->_IsPowerOfTwo);
COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(texcoord[0], u, width, i0, i1);
COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(texcoord[1], v, height, j0, j1);
@@ -1379,6 +1404,7 @@ sample_2d_linear_mipmap_linear_repeat( GLcontext *ctx,
ASSERT(lambda != NULL);
ASSERT(tObj->WrapS == GL_REPEAT);
ASSERT(tObj->WrapT == GL_REPEAT);
ASSERT(tObj->_IsPowerOfTwo);
for (i = 0; i < n; i++) {
GLint level;
COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
@@ -1457,6 +1483,7 @@ opt_sample_rgb_2d( GLcontext *ctx, GLuint texUnit,
ASSERT(tObj->WrapT==GL_REPEAT);
ASSERT(img->Border==0);
ASSERT(img->Format==GL_RGB);
ASSERT(img->_IsPowerOfTwo);
for (k=0; k<n; k++) {
GLint i = IFLOOR(texcoords[k][0] * width) & colMask;
@@ -1496,6 +1523,7 @@ opt_sample_rgba_2d( GLcontext *ctx, GLuint texUnit,
ASSERT(tObj->WrapT==GL_REPEAT);
ASSERT(img->Border==0);
ASSERT(img->Format==GL_RGBA);
ASSERT(img->_IsPowerOfTwo);
for (i = 0; i < n; i++) {
const GLint col = IFLOOR(texcoords[i][0] * width) & colMask;
@@ -1521,10 +1549,11 @@ sample_lambda_2d( GLcontext *ctx, GLuint texUnit,
GLuint minStart, minEnd; /* texels with minification */
GLuint magStart, magEnd; /* texels with magnification */
const GLboolean repeatNoBorder = (tObj->WrapS == GL_REPEAT)
const GLboolean repeatNoBorderPOT = (tObj->WrapS == GL_REPEAT)
&& (tObj->WrapT == GL_REPEAT)
&& (tImg->Border == 0 && (tImg->Width == tImg->RowStride))
&& (tImg->Format != GL_COLOR_INDEX);
&& (tImg->Format != GL_COLOR_INDEX)
&& tImg->_IsPowerOfTwo;
ASSERT(lambda != NULL);
compute_min_mag_ranges(SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit],
@@ -1535,7 +1564,7 @@ sample_lambda_2d( GLcontext *ctx, GLuint texUnit,
const GLuint m = minEnd - minStart;
switch (tObj->MinFilter) {
case GL_NEAREST:
if (repeatNoBorder) {
if (repeatNoBorderPOT) {
switch (tImg->Format) {
case GL_RGB:
opt_sample_rgb_2d(ctx, texUnit, tObj, m, texcoords + minStart,
@@ -1573,7 +1602,7 @@ sample_lambda_2d( GLcontext *ctx, GLuint texUnit,
lambda + minStart, rgba + minStart);
break;
case GL_LINEAR_MIPMAP_LINEAR:
if (repeatNoBorder)
if (repeatNoBorderPOT)
sample_2d_linear_mipmap_linear_repeat(ctx, tObj, m,
texcoords + minStart, lambda + minStart, rgba + minStart);
else
@@ -1592,7 +1621,7 @@ sample_lambda_2d( GLcontext *ctx, GLuint texUnit,
switch (tObj->MagFilter) {
case GL_NEAREST:
if (repeatNoBorder) {
if (repeatNoBorderPOT) {
switch (tImg->Format) {
case GL_RGB:
opt_sample_rgb_2d(ctx, texUnit, tObj, m, texcoords + magStart,
@@ -2977,12 +3006,14 @@ _swrast_choose_texture_sample_func( GLcontext *ctx,
ASSERT(t->MinFilter == GL_NEAREST);
if (t->WrapS == GL_REPEAT &&
t->WrapT == GL_REPEAT &&
t->_IsPowerOfTwo &&
t->Image[baseLevel]->Border == 0 &&
t->Image[baseLevel]->TexFormat->MesaFormat == MESA_FORMAT_RGB) {
return &opt_sample_rgb_2d;
}
else if (t->WrapS == GL_REPEAT &&
t->WrapT == GL_REPEAT &&
t->_IsPowerOfTwo &&
t->Image[baseLevel]->Border == 0 &&
t->Image[baseLevel]->TexFormat->MesaFormat == MESA_FORMAT_RGBA) {
return &opt_sample_rgba_2d;
@@ -4188,6 +4219,7 @@ _swrast_texture_span( GLcontext *ctx, struct sw_span *span )
swrast->TextureSample[unit]( ctx, unit, texUnit->_Current, span->end,
(const GLfloat (*)[4]) span->array->texcoords[unit],
lambda, texels );
/* GL_SGI_texture_color_table */
if (texUnit->ColorTableEnabled) {
_swrast_texture_table_lookup(&texUnit->ColorTable, span->end, texels);

1
src/mesa/swrast/s_triangle.c
View File

@@ -1074,6 +1074,7 @@ _swrast_choose_triangle( GLcontext *ctx )
&& ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT
&& texObj2D->WrapS==GL_REPEAT
&& texObj2D->WrapT==GL_REPEAT
&& texObj2D->_IsPowerOfTwo
&& texImg->Border==0
&& texImg->Width == texImg->RowStride
&& (format == MESA_FORMAT_RGB || format == MESA_FORMAT_RGBA)