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Added view sphere highlight.

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This commit is contained in:
Leonardo Zide 2019-01-12 17:43:23 -08:00
parent 19680a199b
commit c8102034f9
4 changed files with 45 additions and 19 deletions
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16
common/lc_context.cpp
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@ -48,13 +48,15 @@ lcContext::lcContext()
mViewMatrix = lcMatrix44Identity();
mProjectionMatrix = lcMatrix44Identity();
mViewProjectionMatrix = lcMatrix44Identity();
mHighlightColor = lcVector4(0.0f, 0.0f, 0.0f, 0.0f);
mHighlightParams[0] = lcVector4(0.0f, 0.0f, 0.0f, 0.0f);
mHighlightParams[1] = lcVector4(0.0f, 0.0f, 0.0f, 0.0f);
mHighlightParams[2] = lcVector4(0.0f, 0.0f, 0.0f, 0.0f);
mColorDirty = false;
mWorldMatrixDirty = false;
mViewMatrixDirty = false;
mProjectionMatrixDirty = false;
mViewProjectionMatrixDirty = false;
mHighlightColorDirty = false;
mHighlightParamsDirty = false;
mMaterialType = LC_NUM_MATERIALS;
}
@ -204,7 +206,7 @@ void lcContext::CreateShaderPrograms()
mPrograms[MaterialType].MaterialColorLocation = glGetUniformLocation(Program, "MaterialColor");
mPrograms[MaterialType].LightPositionLocation = glGetUniformLocation(Program, "LightPosition");
mPrograms[MaterialType].EyePositionLocation = glGetUniformLocation(Program, "EyePosition");
mPrograms[MaterialType].HighlightColorLocation = glGetUniformLocation(Program, "HighlightColor");
mPrograms[MaterialType].HighlightParamsLocation = glGetUniformLocation(Program, "HighlightParams");
}
}
@ -333,7 +335,7 @@ void lcContext::SetMaterial(lcMaterialType MaterialType)
mColorDirty = true;
mWorldMatrixDirty = true; // todo: change dirty to a bitfield and set the lighting constants dirty here
mViewMatrixDirty = true;
mHighlightColorDirty = true;
mHighlightParamsDirty = true;
}
else
{
@ -1174,10 +1176,10 @@ void lcContext::FlushState()
mColorDirty = false;
}
if (mHighlightColorDirty && Program.HighlightColorLocation != -1)
if (mHighlightParamsDirty && Program.HighlightParamsLocation != -1)
{
glUniform4fv(Program.HighlightColorLocation, 1, mHighlightColor);
mHighlightColorDirty = false;
glUniform4fv(Program.HighlightParamsLocation, 2, mHighlightParams[0]);
mHighlightParamsDirty = false;
}
}
else

13
common/lc_context.h
View file

@ -73,7 +73,7 @@ struct lcProgram
GLint MaterialColorLocation;
GLint LightPositionLocation;
GLint EyePositionLocation;
GLint HighlightColorLocation;
GLint HighlightParamsLocation;
};
class lcFramebuffer
@ -153,10 +153,11 @@ public:
mColorDirty = true;
}
void SetHighlightColor(const lcVector4& HighlightColor)
void SetHighlightParams(const lcVector4& HighlightMin, const lcVector4& HighlightMax)
{
mHighlightColor = HighlightColor;
mHighlightColorDirty = true;
mHighlightParams[0] = HighlightMin;
mHighlightParams[1] = HighlightMax;
mHighlightParamsDirty = true;
}
void SetColor(float Red, float Green, float Blue, float Alpha);
@ -226,13 +227,13 @@ protected:
lcMatrix44 mViewMatrix;
lcMatrix44 mProjectionMatrix;
lcMatrix44 mViewProjectionMatrix;
lcVector4 mHighlightColor;
lcVector4 mHighlightParams[3];
bool mColorDirty;
bool mWorldMatrixDirty;
bool mViewMatrixDirty;
bool mProjectionMatrixDirty;
bool mViewProjectionMatrixDirty;
bool mHighlightColorDirty;
bool mHighlightParamsDirty;
GLuint mFramebufferObject;

21
common/lc_viewsphere.cpp
View file

@ -179,13 +179,28 @@ void lcViewSphere::Draw()
Context->SetVertexFormatPosition(3);
Context->SetIndexBuffer(mIndexBuffer);
Context->SetColor(1.0f, 1.0f, 1.0f, 1.0f);
Context->SetHighlightColor(lcVector4(0.0f, 0.0f, 0.0f, 1.0f));
Context->SetHighlightParams(lcVector4(10.0f, 10.0f, 10.0f, 0.0f), lcVector4(-10.0f, -10.0f, -10.0f, 0.0f));
Context->DrawIndexedPrimitives(GL_TRIANGLES, mSubdivisions * mSubdivisions * 6 * 6, GL_UNSIGNED_SHORT, 0);
if (mIntersectionFlags.any())
{
Context->SetHighlightColor(lcVector4(1.0, 0, 0, 1.0));
lcVector4 HighlightMin(-10.0f, -10.0f, -10.0f, 0.0f), HighlightMax(10.0f, 10.0f, 10.0f, 0.0f);
for (int AxisIdx = 0; AxisIdx < 3; AxisIdx++)
{
if (mIntersectionFlags.test(2 * AxisIdx))
{
HighlightMin[AxisIdx] = 0.5f;
HighlightMax[AxisIdx] = 10.0f;
}
else if (mIntersectionFlags.test(2 * AxisIdx + 1))
{
HighlightMin[AxisIdx] = -10.0f;
HighlightMax[AxisIdx] = -0.5f;
}
}
Context->SetHighlightParams(HighlightMin, HighlightMax);
for (int FlagIdx = 0; FlagIdx < 6; FlagIdx++)
{

14
resources/shaders/unlit_view_sphere_ps.glsl
View file

@ -1,12 +1,20 @@
LC_PIXEL_INPUT vec3 PixelNormal;
LC_PIXEL_OUTPUT
uniform mediump vec4 MaterialColor;
uniform mediump vec4 HighlightColor;
uniform mediump vec4 HighlightParams[2];
uniform samplerCube Texture;
const mediump vec4 TextColor = vec4(0.0, 0.0, 0.0, 1.0);
const mediump vec4 BackgroundColor = vec4(1.0, 1.0, 1.0, 1.0);
const mediump vec4 HighlightColor = vec4(1.0, 0.0, 0.0, 1.0);
void main()
{
LC_SHADER_PRECISION float TexelAlpha = textureCube(Texture, PixelNormal).a;
gl_FragColor = mix(MaterialColor, HighlightColor, TexelAlpha);
if (PixelNormal.x > HighlightParams[0].x && PixelNormal.y > HighlightParams[0].y && PixelNormal.z > HighlightParams[0].z &&
PixelNormal.x < HighlightParams[1].x && PixelNormal.y < HighlightParams[1].y && PixelNormal.z < HighlightParams[1].z)
gl_FragColor = mix(HighlightColor, TextColor, TexelAlpha);
else
gl_FragColor = mix(BackgroundColor, TextColor, TexelAlpha);
}