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Button shader reorganization

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This commit is contained in:
r.kuznetsov 2015-12-18 11:00:35 +03:00
parent 14f162dd8a
commit 6d6e55da68
3 changed files with 21 additions and 36 deletions
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3
drape/shaders/button_vertex_shader.vsh
View file

@ -1,4 +1,3 @@
attribute vec3 a_position;
attribute vec2 a_normal;
uniform mat4 modelView;
@ -6,5 +5,5 @@ uniform mat4 projection;
void main(void)
{
gl_Position = (vec4(a_normal, 0, 0) + vec4(a_position, 1) * modelView) * projection;
gl_Position = vec4(modelView[0][3] + a_normal.x, modelView[1][3] + a_normal.y, modelView[2][3], 1) * projection;
}

45
drape_frontend/gui/button.cpp
View file

@ -36,15 +36,13 @@ uint32_t BuildRect(vector<Button::ButtonVertex> & vertices,
glsl::vec2 const & v3, glsl::vec2 const & v4)
{
glsl::vec3 const position(0.0f, 0.0f, 0.0f);
vertices.push_back(Button::ButtonVertex(v1));
vertices.push_back(Button::ButtonVertex(v2));
vertices.push_back(Button::ButtonVertex(v3));
vertices.push_back(Button::ButtonVertex(position, v1));
vertices.push_back(Button::ButtonVertex(position, v2));
vertices.push_back(Button::ButtonVertex(position, v3));
vertices.push_back(Button::ButtonVertex(position, v3));
vertices.push_back(Button::ButtonVertex(position, v2));
vertices.push_back(Button::ButtonVertex(position, v4));
vertices.push_back(Button::ButtonVertex(v3));
vertices.push_back(Button::ButtonVertex(v2));
vertices.push_back(Button::ButtonVertex(v4));
return dp::Batcher::IndexPerQuad;
}
@ -53,23 +51,21 @@ uint32_t BuildCorner(vector<Button::ButtonVertex> & vertices,
glsl::vec2 const & pt, double radius,
double angleStart, double angleFinish)
{
glsl::vec3 const position(0.0f, 0.0f, 0.0f);
int const trianglesCount = 8;
double const sector = (angleFinish - angleStart) / static_cast<double>(trianglesCount);
int const kTrianglesCount = 8;
double const sector = (angleFinish - angleStart) / kTrianglesCount;
m2::PointD startNormal(0.0f, radius);
for (size_t i = 0; i < trianglesCount; ++i)
for (size_t i = 0; i < kTrianglesCount; ++i)
{
m2::PointD normal = m2::Rotate(startNormal, angleStart + i * sector);
m2::PointD nextNormal = m2::Rotate(startNormal, angleStart + (i + 1) * sector);
vertices.push_back(Button::ButtonVertex(position, pt));
vertices.push_back(Button::ButtonVertex(position, pt - glsl::ToVec2(normal)));
vertices.push_back(Button::ButtonVertex(position, pt - glsl::ToVec2(nextNormal)));
vertices.push_back(Button::ButtonVertex(pt));
vertices.push_back(Button::ButtonVertex(pt - glsl::ToVec2(normal)));
vertices.push_back(Button::ButtonVertex(pt - glsl::ToVec2(nextNormal)));
}
return trianglesCount * dp::Batcher::IndexPerTriangle;
return kTrianglesCount * dp::Batcher::IndexPerTriangle;
}
}
@ -189,21 +185,14 @@ dp::BindingInfo const & Button::ButtonVertex::GetBindingInfo()
if (info == nullptr)
{
info.reset(new dp::BindingInfo(2));
info.reset(new dp::BindingInfo(1));
dp::BindingDecl & posDecl = info->GetBindingDecl(0);
posDecl.m_attributeName = "a_position";
posDecl.m_componentCount = 3;
posDecl.m_componentType = gl_const::GLFloatType;
posDecl.m_offset = 0;
posDecl.m_stride = sizeof(ButtonVertex);
dp::BindingDecl & normalDecl = info->GetBindingDecl(1);
dp::BindingDecl & normalDecl = info->GetBindingDecl(0);
normalDecl.m_attributeName = "a_normal";
normalDecl.m_componentCount = 2;
normalDecl.m_componentType = gl_const::GLFloatType;
normalDecl.m_offset = sizeof(glsl::vec3);
normalDecl.m_stride = posDecl.m_stride;
normalDecl.m_offset = 0;
normalDecl.m_stride = sizeof(ButtonVertex);
}
return *info.get();

9
drape_frontend/gui/button.hpp
View file

@ -33,15 +33,12 @@ public:
struct ButtonVertex
{
ButtonVertex() = default;
ButtonVertex(glsl::vec3 const & position, glsl::vec2 const & normal)
: m_position(position)
, m_normal(normal)
{
}
ButtonVertex(glsl::vec2 const & normal)
: m_normal(normal)
{}
static dp::BindingInfo const & GetBindingInfo();
glsl::vec3 m_position;
glsl::vec2 m_normal;
};