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https://github.com/wiiu-env/libgui.git
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105 lines
3.7 KiB
C++
105 lines
3.7 KiB
C++
#include "utils/utils.h"
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#include <gui/GridBackground.h>
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#include <gui/video/CVideo.h>
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#include <gui/video/shaders/Shader3D.h>
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static const float bgRepeat = 1000.0f;
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static const float bgTexRotate = 39.0f;
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GridBackground::GridBackground(GuiImageData *img)
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: GuiImage(img) {
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colorIntensity = glm::vec4(1.0f, 1.0f, 1.0f, 0.9f);
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alphaFadeOut = glm::vec4(0.0f);
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distanceFadeOut = 0.15f;
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vtxCount = 4;
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//! texture and vertex coordinates
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float *m_posVtxs = (float *) memalign(GX2_VERTEX_BUFFER_ALIGNMENT, vtxCount * Shader3D::cuVertexAttrSize);
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float *m_texCoords = (float *) memalign(GX2_VERTEX_BUFFER_ALIGNMENT, vtxCount * Shader3D::cuTexCoordAttrSize);
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if (m_posVtxs) {
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int32_t i = 0;
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m_posVtxs[i++] = -1.0f;
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m_posVtxs[i++] = 0.0f;
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m_posVtxs[i++] = 1.0f;
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m_posVtxs[i++] = 1.0f;
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m_posVtxs[i++] = 0.0f;
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m_posVtxs[i++] = 1.0f;
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m_posVtxs[i++] = 1.0f;
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m_posVtxs[i++] = 0.0f;
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m_posVtxs[i++] = -1.0f;
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m_posVtxs[i++] = -1.0f;
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m_posVtxs[i++] = 0.0f;
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m_posVtxs[i++] = -1.0f;
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GX2Invalidate(GX2_INVALIDATE_MODE_CPU_ATTRIBUTE_BUFFER, m_posVtxs, vtxCount * Shader3D::cuVertexAttrSize);
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}
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if (m_texCoords) {
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glm::vec2 texCoordVec[4];
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texCoordVec[0][0] = -0.5f * bgRepeat;
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texCoordVec[0][1] = 0.5f * bgRepeat;
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texCoordVec[1][0] = 0.5f * bgRepeat;
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texCoordVec[1][1] = 0.5f * bgRepeat;
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texCoordVec[2][0] = 0.5f * bgRepeat;
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texCoordVec[2][1] = -0.5f * bgRepeat;
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texCoordVec[3][0] = -0.5f * bgRepeat;
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texCoordVec[3][1] = -0.5f * bgRepeat;
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const float cosRot = cosf(DegToRad(bgTexRotate));
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const float sinRot = sinf(DegToRad(bgTexRotate));
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glm::mat2 texRotateMtx({cosRot, -sinRot,
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sinRot, cosRot});
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for (int32_t i = 0; i < 4; i++) {
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texCoordVec[i] = texRotateMtx * texCoordVec[i];
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m_texCoords[i * 2 + 0] = texCoordVec[i][0];
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m_texCoords[i * 2 + 1] = texCoordVec[i][1];
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}
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GX2Invalidate(GX2_INVALIDATE_MODE_CPU_ATTRIBUTE_BUFFER, m_texCoords, vtxCount * Shader3D::cuTexCoordAttrSize);
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}
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//! assign to internal variables which are const but oh well
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posVtxs = m_posVtxs;
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texCoords = m_texCoords;
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}
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GridBackground::~GridBackground() {
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//! remove image so it can not be drawn anymore from this point on
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imageData = NULL;
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//! main image vertexes
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if (posVtxs) {
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free((void *) posVtxs);
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posVtxs = NULL;
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}
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if (texCoords) {
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free((void *) texCoords);
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texCoords = NULL;
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}
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}
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void GridBackground::draw(CVideo *pVideo, const glm::mat4 &modelView) {
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//! first setup 2D GUI positions
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float currScaleX = bgRepeat * scaleX * (float) getWidth() * pVideo->getWidthScaleFactor();
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float currScaleY = 1.0f;
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float currScaleZ = bgRepeat * scaleZ * (float) getHeight() * pVideo->getDepthScaleFactor();
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m_modelView = glm::scale(modelView, glm::vec3(currScaleX, currScaleY, currScaleZ));
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colorIntensity[3] = getAlpha();
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Shader3D::instance()->setShaders();
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Shader3D::instance()->setTextureAndSampler(imageData->getTexture(), imageData->getSampler());
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Shader3D::instance()->setProjectionMtx(pVideo->getProjectionMtx());
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Shader3D::instance()->setViewMtx(pVideo->getViewMtx());
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Shader3D::instance()->setModelViewMtx(m_modelView);
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Shader3D::instance()->setDistanceFadeOut(distanceFadeOut);
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Shader3D::instance()->setAlphaFadeOut(alphaFadeOut);
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Shader3D::instance()->setColorIntensity(colorIntensity);
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Shader3D::instance()->setAttributeBuffer(vtxCount, posVtxs, texCoords);
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Shader3D::instance()->draw(GX2_PRIMITIVE_MODE_QUADS, vtxCount);
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}
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