Revert "Revert "converted vertex shaders to device coords""

This reverts commit 29b3434e48ca41672266ac40f5b9e8f8a0405cb5.

Reason for revert: The Chrome perf regression is suspect & the Nexus 5 is broken w/o this CL.

Original change's description:
> Revert "converted vertex shaders to device coords"
> 
> This reverts commit e7e81c15c144b8133f696d0744ed9f7e8d06e936.
> 
> Reason for revert: Chrome perf regressions
> 
> Bug: skia:
> Change-Id: I17fadc97c4b8e80bfdccbf123554614a00c58473
> Reviewed-on: https://skia-review.googlesource.com/99040
> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

TBR=csmartdalton@google.com,ethannicholas@google.com

Change-Id: Iff3c9fce65beeca16028ae59d4d08b1413b90530
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/99241
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

1 files changed, 67 insertions, 0 deletions

diff --git a/tests/SkSLGLSLTest.cpp b/tests/SkSLGLSLTest.cpp
index 53710c9516..62c5cd6955 100644
--- a/tests/SkSLGLSLTest.cpp
+++ b/tests/SkSLGLSLTest.cpp
@@ -1072,6 +1072,21 @@ DEF_TEST(SkSLFragCoord, r) {
          SkSL::Program::kVertex_Kind);
 
     test(r,
+         "in uniform float4 sk_RTAdjust; in float4 pos; void main() { sk_Position = pos; }",
+         *SkSL::ShaderCapsFactory::CannotUseFragCoord(),
+         "#version 400\n"
+         "out vec4 sk_FragCoord_Workaround;\n"
+         "in uniform vec4 sk_RTAdjust;\n"
+         "in vec4 pos;\n"
+         "void main() {\n"
+         "    sk_FragCoord_Workaround = (gl_Position = pos);\n"
+         "    gl_Position = vec4(gl_Position.x * sk_RTAdjust.x + gl_Position.w * sk_RTAdjust.y, "
+              "gl_Position.y * sk_RTAdjust.z + gl_Position.w * sk_RTAdjust.w, 0.0, "
+              "gl_Position.w);\n"
+         "}\n",
+         SkSL::Program::kVertex_Kind);
+
+    test(r,
          "void main() { sk_FragColor.xy = sk_FragCoord.xy; }",
          *SkSL::ShaderCapsFactory::CannotUseFragCoord(),
          "#version 400\n"
@@ -1739,6 +1754,58 @@ DEF_TEST(SkSLForceHighPrecision, r) {
          &inputs);
 }
 
+DEF_TEST(SkSLNormalization, r) {
+    test(r,
+         "uniform float4 sk_RTAdjust; void main() { sk_Position = half4(1); }",
+         *SkSL::ShaderCapsFactory::Default(),
+         "#version 400\n"
+         "uniform vec4 sk_RTAdjust;\n"
+         "void main() {\n"
+         "    gl_Position = vec4(1.0);\n"
+         "    gl_Position = vec4(gl_Position.x * sk_RTAdjust.x + gl_Position.w * sk_RTAdjust.y, "
+                                "gl_Position.y * sk_RTAdjust.z + gl_Position.w * sk_RTAdjust.w, "
+                                "0.0, "
+                                "gl_Position.w);\n"
+         "}\n",
+         SkSL::Program::kVertex_Kind);
+    test(r,
+         "uniform float4 sk_RTAdjust;"
+         "layout(points) in;"
+         "layout(invocations = 2) in;"
+         "layout(line_strip, max_vertices = 2) out;"
+         "void main() {"
+         "sk_Position = sk_in[0].sk_Position + float4(-0.5, 0, 0, sk_InvocationID);"
+         "EmitVertex();"
+         "sk_Position = sk_in[0].sk_Position + float4(0.5, 0, 0, sk_InvocationID);"
+         "EmitVertex();"
+         "EndPrimitive();"
+         "}",
+         *SkSL::ShaderCapsFactory::GeometryShaderSupport(),
+         "#version 400\n"
+         "uniform vec4 sk_RTAdjust;\n"
+         "layout (points) in ;\n"
+         "layout (invocations = 2) in ;\n"
+         "layout (line_strip, max_vertices = 2) out ;\n"
+         "void main() {\n"
+         "    gl_Position = gl_in[0].gl_Position + vec4(-0.5, 0.0, 0.0, float(gl_InvocationID));\n"
+         "    {\n"
+         "        gl_Position = vec4(gl_Position.x * sk_RTAdjust.x + gl_Position.w * "
+                               "sk_RTAdjust.y, gl_Position.y * sk_RTAdjust.z + gl_Position.w * "
+                               "sk_RTAdjust.w, 0.0, gl_Position.w);\n"
+         "        EmitVertex();\n"
+         "    }\n"
+         "    gl_Position = gl_in[0].gl_Position + vec4(0.5, 0.0, 0.0, float(gl_InvocationID));\n"
+         "    {\n"
+         "        gl_Position = vec4(gl_Position.x * sk_RTAdjust.x + gl_Position.w * "
+                               "sk_RTAdjust.y, gl_Position.y * sk_RTAdjust.z + gl_Position.w * "
+                               "sk_RTAdjust.w, 0.0, gl_Position.w);\n"
+         "        EmitVertex();\n"
+         "    }\n"
+         "    EndPrimitive();\n"
+         "}\n",
+         SkSL::Program::kGeometry_Kind);
+}
+
 DEF_TEST(SkSLTernaryLValue, r) {
     test(r,
          "void main() { half r, g; (true ? r : g) = 1; (false ? r : g) = 0; "