-/*
- * glDepthFunc( any ) and glDepthMask( GL_TRUE or GL_FALSE ).
- */
-void gl_depth_test_pixels_generic( GLcontext* ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLdepth z[], GLubyte mask[] )
-{
- register GLdepth *zptr;
- register GLuint i;
-
- /* switch cases ordered from most frequent to less frequent */
- switch (ctx->Depth.Func) {
- case GL_LESS:
- if (ctx->Depth.Mask) {
- /* Update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] < *zptr) {
- /* pass */
- *zptr = z[i];
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- else {
- /* Don't update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] < *zptr) {
- /* pass */
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- break;
- case GL_LEQUAL:
- if (ctx->Depth.Mask) {
- /* Update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] <= *zptr) {
- /* pass */
- *zptr = z[i];
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- else {
- /* Don't update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] <= *zptr) {
- /* pass */
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- break;
- case GL_GEQUAL:
- if (ctx->Depth.Mask) {
- /* Update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] >= *zptr) {
- /* pass */
- *zptr = z[i];
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- else {
- /* Don't update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] >= *zptr) {
- /* pass */
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- break;
- case GL_GREATER:
- if (ctx->Depth.Mask) {
- /* Update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] > *zptr) {
- /* pass */
- *zptr = z[i];
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- else {
- /* Don't update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] > *zptr) {
- /* pass */
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- break;
- case GL_NOTEQUAL:
- if (ctx->Depth.Mask) {
- /* Update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] != *zptr) {
- /* pass */
- *zptr = z[i];
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- else {
- /* Don't update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] != *zptr) {
- /* pass */
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- break;
- case GL_EQUAL:
- if (ctx->Depth.Mask) {
- /* Update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] == *zptr) {
- /* pass */
- *zptr = z[i];
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- else {
- /* Don't update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- if (z[i] == *zptr) {
- /* pass */
- }
- else {
- /* fail */
- mask[i] = 0;
- }
- }
- }
- }
- break;
- case GL_ALWAYS:
- if (ctx->Depth.Mask) {
- /* Update Z buffer */
- for (i=0; i<n; i++) {
- if (mask[i]) {
- zptr = Z_ADDRESS(ctx,x[i],y[i]);
- *zptr = z[i];
- }
- }
- }
- else {
- /* Don't update Z buffer or mask */
- }
- break;
- case GL_NEVER:
- /* depth test never passes */
- for (i=0;i<n;i++) {
- mask[i] = 0;
- }
- break;
- default:
- gl_problem(ctx, "Bad depth func in gl_depth_test_pixels_generic");
- } /*switch*/