[Scummvm-git-logs] scummvm master -> b3eb2268e1b92540d71dc156417a9beebdca2a9e

[aquadran]

This automated email contains information about 1 new commit which have been
pushed to the 'scummvm' repo located at https://github.com/scummvm/scummvm .

Summary:
b3eb2268e1 WINTERMUTE: Adedd conversion depth range from DX to OGL in perspective matrix


Commit: b3eb2268e1b92540d71dc156417a9beebdca2a9e
    https://github.com/scummvm/scummvm/commit/b3eb2268e1b92540d71dc156417a9beebdca2a9e
Author: Paweł Kołodziejski (aquadran at gmail.com)
Date: 2024-11-01T22:29:09+01:00

Commit Message:
WINTERMUTE: Adedd conversion depth range from DX to OGL in perspective matrix

Changed paths:
    engines/wintermute/base/gfx/opengl/base_render_opengl3d.cpp
    engines/wintermute/base/gfx/opengl/base_render_opengl3d_shader.cpp


diff --git a/engines/wintermute/base/gfx/opengl/base_render_opengl3d.cpp b/engines/wintermute/base/gfx/opengl/base_render_opengl3d.cpp
index 4bc4c751490..fbb4688031c 100644
--- a/engines/wintermute/base/gfx/opengl/base_render_opengl3d.cpp
+++ b/engines/wintermute/base/gfx/opengl/base_render_opengl3d.cpp
@@ -531,6 +531,10 @@ bool BaseRenderOpenGL3D::setProjection() {
 	matProj.matrix._31 = -(offsetX + (mleft - mright) / 2 - modWidth) / viewportWidth * 2.0f;
 	matProj.matrix._32 =  (offsetY + (mtop - mbottom) / 2 - modHeight) / viewportHeight * 2.0f;
 
+	// convert DX [0, 1] depth range to OpenGL [-1, 1] depth range.
+	matProj.matrix._33 = (matProj.matrix._33 * 2.0f) - 1.0f;
+	matProj.matrix._43 *= 2.0f;
+
 	return setProjectionTransform(matProj);
 }
 
diff --git a/engines/wintermute/base/gfx/opengl/base_render_opengl3d_shader.cpp b/engines/wintermute/base/gfx/opengl/base_render_opengl3d_shader.cpp
index 52c8111860a..290c9ae58b7 100644
--- a/engines/wintermute/base/gfx/opengl/base_render_opengl3d_shader.cpp
+++ b/engines/wintermute/base/gfx/opengl/base_render_opengl3d_shader.cpp
@@ -488,6 +488,10 @@ bool BaseRenderOpenGL3DShader::setProjection() {
 	matProj.matrix._31 = -(offsetX + (mleft - mright) / 2 - modWidth) / viewportWidth * 2.0f;
 	matProj.matrix._32 =  (offsetY + (mtop - mbottom) / 2 - modHeight) / viewportHeight * 2.0f;
 
+	// convert DX [0, 1] depth range to OpenGL [-1, 1] depth range.
+	matProj.matrix._33 = (matProj.matrix._33 * 2.0f) - 1.0f;
+	matProj.matrix._43 *= 2.0f;
+
 	return setProjectionTransform(matProj);
 }