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Set the perspective projection for projective texture mapping. Change the demo to two bears with the same view projection matrix for the camera and the projector.

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yunfeibai
2018-02-20 18:32:09 -08:00
parent ef0ae4935b
commit 5494aa72fa
6 changed files with 53 additions and 58 deletions
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6
examples/OpenGLWindow/Shaders/projectiveTextureInstancingVS.h
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@@ -9,7 +9,7 @@ static const char* projectiveTextureInstancingVertexShader= \
"layout (location = 4) in vec3 vertexnormal;\n"
"layout (location = 5) in vec4 instance_color;\n"
"layout (location = 6) in vec3 instance_scale;\n"
"uniform mat4 DepthBiasModelViewProjectionMatrix;\n"
"uniform mat4 TextureMVP;\n"
"uniform mat4 MVP;\n"
"uniform vec3 lightPosIn;\n"
"uniform vec3 cameraPositionIn;\n"
@@ -80,7 +80,7 @@ static const char* projectiveTextureInstancingVertexShader= \
" vec4 vertexLoc = MVP* vec4((instance_position+localcoord).xyz,1);\n"
" gl_Position = vertexLoc;\n"
" fragment.color = instance_color;\n"
" vec4 projcoords = DepthBiasModelViewProjectionMatrix * vec4((instance_position+localcoord).xyz,1);\n"
" vert.texcoord = projcoords.xy;\n"
" vec4 projcoords = TextureMVP * vec4((instance_position+localcoord).xyz,1);\n"
" vert.texcoord = projcoords.xy/projcoords.z;\n"
"}\n"
;