- else if (datatype == GL_UNSIGNED_BYTE && comps == 1) {
- GLuint i, j, k;
- const GLubyte *rowA = (const GLubyte *) srcRowA;
- const GLubyte *rowB = (const GLubyte *) srcRowB;
- GLubyte *dst = (GLubyte *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2;
- }
- }
- else if (datatype == GL_FLOAT && comps == 4) {
- GLuint i, j, k;
- const GLfloat(*rowA)[4] = (const GLfloat(*)[4]) srcRowA;
- const GLfloat(*rowB)[4] = (const GLfloat(*)[4]) srcRowB;
- GLfloat(*dst)[4] = (GLfloat(*)[4]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) * 0.25F;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) * 0.25F;
- dst[i][2] = (rowA[j][2] + rowA[k][2] +
- rowB[j][2] + rowB[k][2]) * 0.25F;
- dst[i][3] = (rowA[j][3] + rowA[k][3] +
- rowB[j][3] + rowB[k][3]) * 0.25F;
- }
- }
- else if (datatype == GL_HALF_FLOAT_ARB && comps == 4) {
- GLuint i, j, k, comp;
- const GLhalfARB(*rowA)[4] = (const GLhalfARB(*)[4]) srcRowA;
- const GLhalfARB(*rowB)[4] = (const GLhalfARB(*)[4]) srcRowB;
- GLhalfARB(*dst)[4] = (GLhalfARB(*)[4]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 4; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
- }
- else if (datatype == GL_FLOAT && comps == 3) {
- GLuint i, j, k;
- const GLfloat(*rowA)[3] = (const GLfloat(*)[3]) srcRowA;
- const GLfloat(*rowB)[3] = (const GLfloat(*)[3]) srcRowB;
- GLfloat(*dst)[3] = (GLfloat(*)[3]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) * 0.25F;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) * 0.25F;
- dst[i][2] = (rowA[j][2] + rowA[k][2] +
- rowB[j][2] + rowB[k][2]) * 0.25F;
- }
- }
- else if (datatype == GL_HALF_FLOAT_ARB && comps == 3) {
- GLuint i, j, k, comp;
- const GLhalfARB(*rowA)[3] = (const GLhalfARB(*)[3]) srcRowA;
- const GLhalfARB(*rowB)[3] = (const GLhalfARB(*)[3]) srcRowB;
- GLhalfARB(*dst)[3] = (GLhalfARB(*)[3]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 3; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
- }
- else if (datatype == GL_FLOAT && comps == 2) {
- GLuint i, j, k;
- const GLfloat(*rowA)[2] = (const GLfloat(*)[2]) srcRowA;
- const GLfloat(*rowB)[2] = (const GLfloat(*)[2]) srcRowB;
- GLfloat(*dst)[2] = (GLfloat(*)[2]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) * 0.25F;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) * 0.25F;
- }
- }
- else if (datatype == GL_HALF_FLOAT_ARB && comps == 2) {
- GLuint i, j, k, comp;
- const GLhalfARB(*rowA)[2] = (const GLhalfARB(*)[2]) srcRowA;
- const GLhalfARB(*rowB)[2] = (const GLhalfARB(*)[2]) srcRowB;
- GLhalfARB(*dst)[2] = (GLhalfARB(*)[2]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 2; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
- }
- else if (datatype == GL_FLOAT && comps == 1) {
- GLuint i, j, k;
- const GLfloat *rowA = (const GLfloat *) srcRowA;
- const GLfloat *rowB = (const GLfloat *) srcRowB;
- GLfloat *dst = (GLfloat *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) * 0.25F;
- }
- }
- else if (datatype == GL_HALF_FLOAT_ARB && comps == 1) {
- GLuint i, j, k;
- const GLhalfARB *rowA = (const GLhalfARB *) srcRowA;
- const GLhalfARB *rowB = (const GLhalfARB *) srcRowB;
- GLhalfARB *dst = (GLhalfARB *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j]);
- ak = _mesa_half_to_float(rowA[k]);
- bj = _mesa_half_to_float(rowB[j]);
- bk = _mesa_half_to_float(rowB[k]);
- dst[i] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }