cb40008b43
SkVM implements switches as a pseudo-loop; breaks are handled with the condition mask just like a for loop. Fallthrough is handled via a scratch Value in a temporary slot. `writeStore` neeeded to be refactored to support writing into slot(s) without an associated Variable. At IR generation time, SwitchStatements are now emitted without error even in strict-ES2 mode. The GLSL code generator currently reports these as an error in strict-ES2 mode, but this will be fixed in a followup coming shortly (the switch will be rewritten as ifs inside a one-shot loop, similar to our IR-rewrite strategy). Change-Id: I5507257246c42a35d2f46b4b9a89492a5ffeff9b Bug: skia:12450 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/451421 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Auto-Submit: John Stiles <johnstiles@google.com>
39 lines
888 B
Plaintext
39 lines
888 B
Plaintext
uniform half4 colorGreen, colorRed;
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bool switch_with_break_in_loop(int x) {
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int val = 0;
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switch (x) {
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case 1: for (int i=0; i<10; ++i) { ++val; break; ++val; }
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default: ++val;
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}
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return val == 2;
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}
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bool switch_with_continue_in_loop(int x) {
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int val = 0;
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switch (x) {
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case 1: for (int i=0; i<10; ++i) { ++val; continue; ++val; }
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default: ++val;
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}
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return val == 11;
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}
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bool loop_with_break_in_switch(int x) {
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int val = 0;
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for (int i=0; i<10; ++i) {
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switch (x) {
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case 1: ++val; break;
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default: return false;
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}
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++val;
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}
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return val == 20;
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}
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half4 main(float2 coords) {
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int x = int(colorGreen.g);
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return (switch_with_break_in_loop(x) &&
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switch_with_continue_in_loop(x) &&
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loop_with_break_in_switch(x)) ? colorGreen : colorRed;
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}
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