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-rw-r--r--src/jogl/classes/com/jogamp/opengl/util/GLBuffers.java232
1 files changed, 163 insertions, 69 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/GLBuffers.java b/src/jogl/classes/com/jogamp/opengl/util/GLBuffers.java
index 174935dcc..033e4a5a2 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/GLBuffers.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/GLBuffers.java
@@ -342,7 +342,7 @@ public class GLBuffers extends Buffers {
*
* @param tmp a pass through integer array of size >= 1 used to store temp data (performance)
*
- * @param bytesPerElement bytes per element
+ * @param bytesPerPixel bytes per pixel, i.e. via {@link #bytesPerPixel(int, int)}.
* @param width in pixels
* @param height in pixels
* @param depth in pixels
@@ -351,7 +351,7 @@ public class GLBuffers extends Buffers {
* @throws GLException if alignment is invalid. Please contact the maintainer if this is our bug.
*/
public static final int sizeof(GL gl, int tmp[],
- int bytesPerElement, int width, int height, int depth,
+ int bytesPerPixel, int width, int height, int depth,
boolean pack) {
int rowLength = 0;
int skipRows = 0;
@@ -396,8 +396,8 @@ public class GLBuffers extends Buffers {
imageHeight = ( imageHeight > 0 ) ? imageHeight : height;
rowLength = ( rowLength > 0 ) ? rowLength : width;
- int rowLengthInBytes = rowLength * bytesPerElement;
- int skipBytes = skipPixels * bytesPerElement;
+ int rowLengthInBytes = rowLength * bytesPerPixel;
+ int skipBytes = skipPixels * bytesPerPixel;
switch(alignment) {
case 1:
@@ -434,7 +434,7 @@ public class GLBuffers extends Buffers {
skipBytes + // aligned skipPixels * bpp
( skipImages + depth - 1 ) * imageHeight * rowLengthInBytes + // aligned whole images
( skipRows + height - 1 ) * rowLengthInBytes + // aligned lines
- width * bytesPerElement; // last line
+ width * bytesPerPixel; // last line
}
/**
@@ -444,7 +444,9 @@ public class GLBuffers extends Buffers {
* <p>This method is security critical, hence it throws an exception (fail-fast)
* in case either the format, type or alignment is unhandled. In case we forgot to handle
* proper values, please contact the maintainer.</p>
- *
+ *
+ * <p> See {@link #bytesPerPixel(int, int)}. </p>
+ *
* @param gl the current GL object
*
* @param tmp a pass through integer array of size >= 1 used to store temp data (performance)
@@ -500,85 +502,101 @@ public class GLBuffers extends Buffers {
public static final int sizeof(GL gl, int tmp[],
int format, int type, int width, int height, int depth,
boolean pack) throws GLException {
- int elements = 0;
- int esize = 0;
-
if (width < 0) return 0;
if (height < 0) return 0;
if (depth < 0) return 0;
- switch (format) /* 26 */ {
- case GL2.GL_COLOR_INDEX:
- case GL2GL3.GL_STENCIL_INDEX:
- case GL2GL3.GL_DEPTH_COMPONENT:
- case GL2GL3.GL_DEPTH_STENCIL:
- case GL2GL3.GL_RED:
- case GL2GL3.GL_RED_INTEGER:
- case GL2GL3.GL_GREEN:
- case GL2GL3.GL_GREEN_INTEGER:
- case GL2GL3.GL_BLUE:
- case GL2GL3.GL_BLUE_INTEGER:
- case GL.GL_ALPHA:
- case GL.GL_LUMINANCE:
- elements = 1;
- break;
- case GL.GL_LUMINANCE_ALPHA:
- case GL2GL3.GL_RG:
- case GL2GL3.GL_RG_INTEGER:
- case GL2.GL_HILO_NV:
- case GL2.GL_SIGNED_HILO_NV:
- elements = 2;
- break;
- case GL.GL_RGB:
- case GL2GL3.GL_RGB_INTEGER:
- case GL2GL3.GL_BGR:
- case GL2GL3.GL_BGR_INTEGER:
- elements = 3;
- break;
- case GL.GL_RGBA:
- case GL2GL3.GL_RGBA_INTEGER:
- case GL.GL_BGRA:
- case GL2GL3.GL_BGRA_INTEGER:
- case GL2.GL_ABGR_EXT:
- elements = 4;
- break;
- /* FIXME ??
- case GL.GL_HILO_NV:
- elements = 2;
- break; */
- default:
- throw new GLException("format 0x"+Integer.toHexString(format)+" not supported [yet], pls notify the maintainer in case this is our bug.");
- }
-
+ final int bytesPerPixel = bytesPerPixel(format, type);
+ return sizeof(gl, tmp, bytesPerPixel, width, height, depth, pack);
+ }
+
+ /**
+ * Returns the number of bytes required for one pixel with the the given OpenGL format and type.
+ *
+ * <p>This method is security critical, hence it throws an exception (fail-fast)
+ * in case either the format, type or alignment is unhandled. In case we forgot to handle
+ * proper values, please contact the maintainer.</p>
+ *
+ * <p> See {@link #componentCount(int)}. </p>
+ *
+ * @param format must be one of (26) <br/>
+ * GL_COLOR_INDEX GL_STENCIL_INDEX <br/>
+ * GL_DEPTH_COMPONENT GL_DEPTH_STENCIL <br/>
+ * GL_RED GL_RED_INTEGER <br/>
+ * GL_GREEN GL_GREEN_INTEGER <br/>
+ * GL_BLUE GL_BLUE_INTEGER <br/>
+ * GL_ALPHA GL_LUMINANCE (12) <br/>
+ * <br/>
+ * GL_LUMINANCE_ALPHA GL_RG <br/>
+ * GL_RG_INTEGER GL_HILO_NV <br/>
+ * GL_SIGNED_HILO_NV (5) <br/>
+ * <br/>
+ * GL_RGB GL_RGB_INTEGER <br/>
+ * GL_BGR GL_BGR_INTEGER (4)<br/>
+ * <br/>
+ * GL_RGBA GL_RGBA_INTEGER <br/>
+ * GL_BGRA GL_BGRA_INTEGER <br/>
+ * GL_ABGR_EXT (5)<br/>
+ *
+ * @param type must be one of (30) <br/>
+ * GL_BITMAP, <br/>
+ * GL_BYTE, GL_UNSIGNED_BYTE, <br/>
+ * GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV, <br/>
+ * <br/>
+ * GL_SHORT, GL_UNSIGNED_SHORT, <br/>
+ * GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_SHORT_5_6_5_REV, <br/>
+ * GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_4_4_4_4_REV, <br/>
+ * GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV, <br/>
+ * GL_HALF_FLOAT, GL_HALF_FLOAT_OES <br/>
+ * <br/>
+ * GL_FIXED, GL_INT <br/>
+ * GL_UNSIGNED_INT, GL_UNSIGNED_INT_8_8_8_8, <br/>
+ * GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, <br/>
+ * GL_UNSIGNED_INT_2_10_10_10_REV, GL_UNSIGNED_INT_24_8, <br/>
+ * GL_UNSIGNED_INT_10F_11F_11F_REV, GL_UNSIGNED_INT_5_9_9_9_REV <br/>
+ * GL_HILO16_NV, GL_SIGNED_HILO16_NV <br/>
+ * <br/>
+ * GL_FLOAT_32_UNSIGNED_INT_24_8_REV <br/>
+ * <br/>
+ * GL_FLOAT, GL_DOUBLE <br/>
+ *
+ * @return required size of one pixel in bytes
+ * @throws GLException if format or type alignment is not handled. Please contact the maintainer if this is our bug.
+ */
+ public static final int bytesPerPixel(int format, int type) throws GLException {
+ int compSize = 0;
+
+ int compCount = componentCount(format);
+
switch (type) /* 30 */ {
case GL2.GL_BITMAP:
if (GL2.GL_COLOR_INDEX == format || GL2GL3.GL_STENCIL_INDEX == format) {
- return (depth * (height * ((width+7)/8)));
+ compSize = 1;
}
case GL.GL_BYTE:
case GL.GL_UNSIGNED_BYTE:
- esize = 1;
+ compSize = 1;
break;
case GL.GL_SHORT:
case GL.GL_UNSIGNED_SHORT:
case GL.GL_HALF_FLOAT:
case GLES2.GL_HALF_FLOAT_OES:
- esize = 2;
+ compSize = 2;
break;
case GL.GL_FIXED:
case GL2ES2.GL_INT:
case GL.GL_UNSIGNED_INT:
case GL.GL_FLOAT:
- esize = 4;
+ compSize = 4;
break;
case GL2GL3.GL_DOUBLE:
- esize = 8;
+ compSize = 8;
break;
case GL2GL3.GL_UNSIGNED_BYTE_3_3_2:
case GL2GL3.GL_UNSIGNED_BYTE_2_3_3_REV:
- esize = 1;
- elements = 1;
+ compSize = 1;
+ compCount = 1;
break;
case GL.GL_UNSIGNED_SHORT_5_6_5:
case GL2GL3.GL_UNSIGNED_SHORT_5_6_5_REV:
@@ -586,13 +604,13 @@ public class GLBuffers extends Buffers {
case GL2GL3.GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL2GL3.GL_UNSIGNED_SHORT_5_5_5_1:
case GL2GL3.GL_UNSIGNED_SHORT_1_5_5_5_REV:
- esize = 2;
- elements = 1;
+ compSize = 2;
+ compCount = 1;
break;
case GL2.GL_HILO16_NV:
case GL2.GL_SIGNED_HILO16_NV:
- esize = 2;
- elements = 2;
+ compSize = 2;
+ compCount = 2;
break;
case GL2GL3.GL_UNSIGNED_INT_8_8_8_8:
case GL2GL3.GL_UNSIGNED_INT_8_8_8_8_REV:
@@ -601,19 +619,95 @@ public class GLBuffers extends Buffers {
case GL2GL3.GL_UNSIGNED_INT_24_8:
case GL2GL3.GL_UNSIGNED_INT_10F_11F_11F_REV:
case GL2GL3.GL_UNSIGNED_INT_5_9_9_9_REV:
- esize = 4;
- elements = 1;
+ compSize = 4;
+ compCount = 1;
break;
case GL2GL3.GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
- esize = 8;
- elements = 1;
+ compSize = 8;
+ compCount = 1;
break;
default:
throw new GLException("type 0x"+Integer.toHexString(type)+"/"+"format 0x"+Integer.toHexString(format)+" not supported [yet], pls notify the maintainer in case this is our bug.");
- }
+ }
+ return compCount * compSize;
+ }
+
+ /**
+ * Returns the number of components required for the given OpenGL format.
+ *
+ * <p>This method is security critical, hence it throws an exception (fail-fast)
+ * in case either the format, type or alignment is unhandled. In case we forgot to handle
+ * proper values, please contact the maintainer.</p>
+ *
+ * @param format must be one of (26) <br/>
+ * GL_COLOR_INDEX GL_STENCIL_INDEX <br/>
+ * GL_DEPTH_COMPONENT GL_DEPTH_STENCIL <br/>
+ * GL_RED GL_RED_INTEGER <br/>
+ * GL_GREEN GL_GREEN_INTEGER <br/>
+ * GL_BLUE GL_BLUE_INTEGER <br/>
+ * GL_ALPHA GL_LUMINANCE (12) <br/>
+ * <br/>
+ * GL_LUMINANCE_ALPHA GL_RG <br/>
+ * GL_RG_INTEGER GL_HILO_NV <br/>
+ * GL_SIGNED_HILO_NV (5) <br/>
+ * <br/>
+ * GL_RGB GL_RGB_INTEGER <br/>
+ * GL_BGR GL_BGR_INTEGER (4)<br/>
+ * <br/>
+ * GL_RGBA GL_RGBA_INTEGER <br/>
+ * GL_BGRA GL_BGRA_INTEGER <br/>
+ * GL_ABGR_EXT (5)<br/>
+ *
+ * @return number of components required for the given OpenGL format
+ * @throws GLException if format is not handled. Please contact the maintainer if this is our bug.
+ */
+ public static final int componentCount(int format) throws GLException {
+ final int compCount;
- return sizeof(gl, tmp, elements * esize, width, height, depth, pack);
+ switch (format) /* 26 */ {
+ case GL2.GL_COLOR_INDEX:
+ case GL2GL3.GL_STENCIL_INDEX:
+ case GL2GL3.GL_DEPTH_COMPONENT:
+ case GL2GL3.GL_DEPTH_STENCIL:
+ case GL2GL3.GL_RED:
+ case GL2GL3.GL_RED_INTEGER:
+ case GL2GL3.GL_GREEN:
+ case GL2GL3.GL_GREEN_INTEGER:
+ case GL2GL3.GL_BLUE:
+ case GL2GL3.GL_BLUE_INTEGER:
+ case GL.GL_ALPHA:
+ case GL.GL_LUMINANCE:
+ compCount = 1;
+ break;
+ case GL.GL_LUMINANCE_ALPHA:
+ case GL2GL3.GL_RG:
+ case GL2GL3.GL_RG_INTEGER:
+ case GL2.GL_HILO_NV:
+ case GL2.GL_SIGNED_HILO_NV:
+ compCount = 2;
+ break;
+ case GL.GL_RGB:
+ case GL2GL3.GL_RGB_INTEGER:
+ case GL2GL3.GL_BGR:
+ case GL2GL3.GL_BGR_INTEGER:
+ compCount = 3;
+ break;
+ case GL.GL_RGBA:
+ case GL2GL3.GL_RGBA_INTEGER:
+ case GL.GL_BGRA:
+ case GL2GL3.GL_BGRA_INTEGER:
+ case GL2.GL_ABGR_EXT:
+ compCount = 4;
+ break;
+ /* FIXME ??
+ case GL.GL_HILO_NV:
+ elements = 2;
+ break; */
+ default:
+ throw new GLException("format 0x"+Integer.toHexString(format)+" not supported [yet], pls notify the maintainer in case this is our bug.");
+ }
+ return compCount;
}
public static final int getNextPowerOf2(int number) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 01:12:34 +0000