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-rw-r--r--mesalib/src/mesa/main/ff_fragment_shader.cpp6
-rw-r--r--mesalib/src/mesa/main/mtypes.h14
-rw-r--r--mesalib/src/mesa/main/teximage.c67
-rw-r--r--mesalib/src/mesa/main/texstore.c9
4 files changed, 90 insertions, 6 deletions
diff --git a/mesalib/src/mesa/main/ff_fragment_shader.cpp b/mesalib/src/mesa/main/ff_fragment_shader.cpp
index 3e449b03e..b5500714b 100644
--- a/mesalib/src/mesa/main/ff_fragment_shader.cpp
+++ b/mesalib/src/mesa/main/ff_fragment_shader.cpp
@@ -1137,8 +1137,8 @@ load_texunit_bumpmap( struct texenv_fragment_program *p, GLuint unit )
ir_variable *rot_mat_0_var, *rot_mat_1_var;
ir_dereference_variable *rot_mat_0, *rot_mat_1;
- rot_mat_0_var = p->shader->symbols->get_variable("gl_MESABumpRotMatrix0");
- rot_mat_1_var = p->shader->symbols->get_variable("gl_MESABumpRotMatrix1");
+ rot_mat_0_var = p->shader->symbols->get_variable("gl_BumpRotMatrix0MESA");
+ rot_mat_1_var = p->shader->symbols->get_variable("gl_BumpRotMatrix1MESA");
rot_mat_0 = new(p->mem_ctx) ir_dereference_variable(rot_mat_0_var);
rot_mat_1 = new(p->mem_ctx) ir_dereference_variable(rot_mat_1_var);
@@ -1229,7 +1229,7 @@ emit_fog_instructions(struct texenv_fragment_program *p,
temp = new(p->mem_ctx) ir_dereference_variable(fog_result);
fragcolor = new(p->mem_ctx) ir_swizzle(temp, 0, 1, 2, 3, 3);
- oparams = p->shader->symbols->get_variable("gl_MESAFogParamsOptimized");
+ oparams = p->shader->symbols->get_variable("gl_FogParamsOptimizedMESA");
fogcoord = p->shader->symbols->get_variable("gl_FogFragCoord");
params = p->shader->symbols->get_variable("gl_Fog");
f = new(p->mem_ctx) ir_dereference_variable(fogcoord);
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index 719dff3af..411768641 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -2732,6 +2732,20 @@ struct gl_constants
/* GL_ARB_robustness */
GLenum ResetStrategy;
+
+ /**
+ * Whether the implementation strips out and ignores texture borders.
+ *
+ * Many GPU hardware implementations don't support rendering with texture
+ * borders and mipmapped textures. (Note: not static border color, but the
+ * old 1-pixel border around each edge). Implementations then have to do
+ * slow fallbacks to be correct, or just ignore the border and be fast but
+ * wrong. Setting the flag stripts the border off of TexImage calls,
+ * providing "fast but wrong" at significantly reduced driver complexity.
+ *
+ * Texture borders are deprecated in GL 3.0.
+ **/
+ GLboolean StripTextureBorder;
};
diff --git a/mesalib/src/mesa/main/teximage.c b/mesalib/src/mesa/main/teximage.c
index 798201a60..acf7187fd 100644
--- a/mesalib/src/mesa/main/teximage.c
+++ b/mesalib/src/mesa/main/teximage.c
@@ -2246,6 +2246,45 @@ _mesa_choose_texture_format(struct gl_context *ctx,
return f;
}
+/**
+ * Adjust pixel unpack params and image dimensions to strip off the
+ * texture border.
+ *
+ * Gallium and intel don't support texture borders. They've seldem been used
+ * and seldom been implemented correctly anyway.
+ *
+ * \param unpackNew returns the new pixel unpack parameters
+ */
+static void
+strip_texture_border(GLint *border,
+ GLint *width, GLint *height, GLint *depth,
+ const struct gl_pixelstore_attrib *unpack,
+ struct gl_pixelstore_attrib *unpackNew)
+{
+ assert(*border > 0); /* sanity check */
+
+ *unpackNew = *unpack;
+
+ if (unpackNew->RowLength == 0)
+ unpackNew->RowLength = *width;
+
+ if (depth && unpackNew->ImageHeight == 0)
+ unpackNew->ImageHeight = *height;
+
+ unpackNew->SkipPixels += *border;
+ if (height)
+ unpackNew->SkipRows += *border;
+ if (depth)
+ unpackNew->SkipImages += *border;
+
+ assert(*width >= 3);
+ *width = *width - 2 * *border;
+ if (height && *height >= 3)
+ *height = *height - 2 * *border;
+ if (depth && *depth >= 3)
+ *depth = *depth - 2 * *border;
+ *border = 0;
+}
/**
* Common code to implement all the glTexImage1D/2D/3D functions.
@@ -2258,6 +2297,8 @@ teximage(struct gl_context *ctx, GLuint dims,
const GLvoid *pixels)
{
GLboolean error;
+ struct gl_pixelstore_attrib unpack_no_border;
+ const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
@@ -2322,6 +2363,16 @@ teximage(struct gl_context *ctx, GLuint dims,
return; /* error was recorded */
}
+ /* Allow a hardware driver to just strip out the border, to provide
+ * reliable but slightly incorrect hardware rendering instead of
+ * rarely-tested software fallback rendering.
+ */
+ if (border && ctx->Const.StripTextureBorder) {
+ strip_texture_border(&border, &width, &height, &depth, unpack,
+ &unpack_no_border);
+ unpack = &unpack_no_border;
+ }
+
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
@@ -2354,19 +2405,19 @@ teximage(struct gl_context *ctx, GLuint dims,
case 1:
ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
width, border, format,
- type, pixels, &ctx->Unpack, texObj,
+ type, pixels, unpack, texObj,
texImage);
break;
case 2:
ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
width, height, border, format,
- type, pixels, &ctx->Unpack, texObj,
+ type, pixels, unpack, texObj,
texImage);
break;
case 3:
ctx->Driver.TexImage3D(ctx, target, level, internalFormat,
width, height, depth, border, format,
- type, pixels, &ctx->Unpack, texObj,
+ type, pixels, unpack, texObj,
texImage);
break;
default:
@@ -2662,6 +2713,16 @@ copyteximage(struct gl_context *ctx, GLuint dims,
texObj = _mesa_get_current_tex_object(ctx, target);
+ if (border && ctx->Const.StripTextureBorder) {
+ x += border;
+ width -= border * 2;
+ if (dims == 2) {
+ y += border;
+ height -= border * 2;
+ }
+ border = 0;
+ }
+
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
diff --git a/mesalib/src/mesa/main/texstore.c b/mesalib/src/mesa/main/texstore.c
index cd9249630..05c1964d6 100644
--- a/mesalib/src/mesa/main/texstore.c
+++ b/mesalib/src/mesa/main/texstore.c
@@ -4499,6 +4499,9 @@ _mesa_store_teximage1d(struct gl_context *ctx, GLenum target, GLint level,
(void) border;
+ if (width == 0)
+ return;
+
/* allocate storage for texture data */
if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage, texImage->TexFormat,
width, 1, 1)) {
@@ -4560,6 +4563,9 @@ _mesa_store_teximage2d(struct gl_context *ctx, GLenum target, GLint level,
(void) border;
+ if (width == 0 || height == 0)
+ return;
+
/* allocate storage for texture data */
if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage, texImage->TexFormat,
width, height, 1)) {
@@ -4651,6 +4657,9 @@ _mesa_store_teximage3d(struct gl_context *ctx, GLenum target, GLint level,
(void) border;
+ if (width == 0 || height == 0 || depth == 0)
+ return;
+
/* allocate storage for texture data */
if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage, texImage->TexFormat,
width, height, depth)) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 01:59:41 +0000